Develop web based cell phone application jobs

I'm in need of a creative designer capable of creating a stunning text-based logo and a website that embodies my brand. My mission is a sport-inspired theme which should resonate in both the logo and website design. Key Specifications: - Leverage a color palette centered around pink and black. - Create a powerful text-based logo. - Build a sports-themed, user-friendly website. Skills & Experience: - Exceptional in graphic design, focusing on text-based logo creation. - Proficient in website design and development. - Previous experience with sports-themed projects. - Creative aptitude in color theory, especially with pink and black color palettes. - Explicit attention to details without compromising on aesthetics. Please include samples of completed wo...

I need someone who can develop and debug test automation, with a Java/Selenium/Maven/TestNG framework, for an Intranet web application. The automator should be located in Washington, DC, USAor in a metro-accessible DMV (DC/Maryland/Virginia) location. I need someone who can work next to me physically, as I am unable to allow anyone to remotely access my laptop because the project is running on a work computer and network, which is why I need someone local. Nobody on my team or project has experience with automation, and I'm having trouble with several framework design difficulties and test execution issues, which is why I need help. Outline of requirements: - Proficiency in Java programming language, Selenium, and TestNG - Be located in a metro-accessable DMV are...

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I have a TikTok filter that I would like to apply to a series of 500 videos. The videos are entertaining in nature and meant for a general audience. Key requirements: - Utilize a TikTok filter I have developed on 500 videos - Ensure the videos maintain a consistent and entertaining tone - The target audience for these videos is a general audience I am looking for a skilled professional who has experience with video editing and applying filters. The ideal candidate will have a good understanding of TikTok and its audience, and be able to create engaging content that is suitable for a broad demographic.

I'm seeking an independent sales representative who can assist me in developing retail distribution channels for our electronics, home appliances, automotive and fashion products in the USA's West Coast. Our stock is warehoused in Asia ready for supply. Ideal candidates must- - Have experience in dealing with retail stores - Be located or have solid connections on the West Coast - Be knowledgeable in the Electronics/Home Appliances/Automotive/Fashion industry Your responsibilities will include mapping out potential retail stores, forging relationships and negotiating product placement deals. This is an exciting opportunity to play a role in driving the growth of diverse product categories in the USA market.

I am in need of a skilled individual who can handle meeting scheduling and closing deals through manual processes like email and phone calls. We are managing more than 20 meetings and deals per month, so efficiency and effectiveness is a must. Key features required for this job include: - Automatic scheduling and reminders to ensure no meeting is missed or overlooked. - Real-time bidding capabilities to enable the swift negotiation and closing of deals. - Transparent reporting and tracking for a clear view of all ongoing and upcoming tasks. Ideal candidates would have experience in a business or sales role, with strong skills in organization, communication, negotiation, and the use of digital tools for scheduling and reminders. Experience in real-time bidding would also be benefic...

I am embarking on an exciting project to develop and a co-working space in Jaipur that is tailored to the unique needs and preferences of local professionals and entrepreneurs. Through extensive market research, I've gathered valuable insights into what potential clients value in a work environment. Here's what I'm looking for in a freelancer to bring this vision to life: - A skilled interior designer with experience in autocad planning, sketchup and vray 3d design, 3d rendors , photoshop rendors, minimalist and ergonomic workspace layouts, who can incorporate light color schemes and natural elements, etc - A technology consultant who can implement a robust digital infrastructure, including high-speed internet, smart devices, and software subscriptions. - An acoustic...

I have a personal WAV file recorded from a phone that I'd like to have enhanced for better clarity and noise reduction. This is an infidelity situation so there may be NSFW sounds throughout the recording. Key Requirements: - Audio Expertise: Experience in forensic audio analysis, particularly in noise reduction and clarity enhancement, is essential for this project. - WAV Format: The files are in WAV format, so proficiency in this format is crucial. Ideal Candidate: - Experienced in Audio Forensics: You should have prior experience handling similar personal audio restoration projects. - Strong Technical Skills: Proficiency with tools and techniques to enhance audio clarity and reduce noise. - Excellent Communication: Ability to understand the nature of the audio recordings...

Many people say this is not possible but there are a few apps that can do this. I need an Android project in JAVA not Kotline and maybe with C++ code that integrates seemlessly which allows me to record a phone call. Technically I do not need a recorded file - I need an AudioRecord object returned that I can plug into my current code so I can process the phone audio NOTE: This is not for voice but for things like dial tones etc so AudioSource.VOICE_RECOGNITION does not work because it seems to block / noise cancel the audio I need.

I am seeking a skilled freelancer to guide me in creating Power Automate flows that efficiently import data from a single worksheet Excel document into Dataverse. Key Tasks: - Develop a couple of Power Automate flows to import Excel data into Dataverse. - I have had many difficulties with date and lookup/choice columns not correctly importing. Ideal Candidate: - Expert knowledge and experience in Power Automate. - Proficient in Data Integration between applications. - Knowledgeable in creating approval workflows and automated notifications. - Previous experience with Excel-data integration into Dataverse. - Excellent communication skills.

We‘re a startup, which wants to develop their first App, which is an Islamic Navigations App

...Experience Preferred Need to cover all hours of the day and the weekends. This is a remote position for a US Based Company 1st - VA to work 7a-3p CST weekdays, 2nd - VA to work 3p - 11p CST weekdays, 3rd - VA to work 11p-7a weekdays, and 4th - VA to work weekends, take calls for both days Option 1 - 2x VAs to work part time, where one does all day Saturday and one does all day Sunday. Option 2 – 2x VAs to work 7-3, 3-11, 11-7p CST to rotate weekends and have every 3rd weekend and get paid extra for each of those weekends. Duties: (1) answering the phone on the first ring, booking appointments in HubSpot, and transferring calls, when necessary, (2) placing immediate outbound phone calls to new leads or new people who have scheduled online telling t...

...officials who require bribes to release goods. Any “horror stories” you might have heard or read about corrupt local customs officials in your country requiring bribes to release goods probably were for items such as expensive phones and laptops, not a bunch of simple electronics components. Put simply: I suppose a customs official looking at an iPhone 14 Pro might think, “Wow! This is an expensive phone. Yeah, this guy has money. Let me get a bribe out of him.” Whereas, if he were to look at a few ESP32 development boards which cost less than $5 (Five Dollars) each? Meh. I doubt he’s even going to think about asking for a bribe for such items. I suppose corrupt local customs officials are greedy, not foolish.z ✻ TIME FRAME ✻ This project must...

...Expertise: Conduct keyword research to identify high-value, low-competition keywords. Optimize on-page SEO elements, including meta tags, headers, and content, to improve search engine rankings. Implement technical SEO improvements, such as site speed optimization and mobile-friendliness enhancements. Monitor website traffic, rankings, and analytics to identify opportunities for improvement. Develop and execute link-building strategies to increase domain authority. Stay up-to-date with SEO trends and algorithm updates to adapt strategies accordingly. Requirements: Proven experience in SEO optimization with a strong portfolio of successful projects. Proficiency in SEO tools such as Google Analytics, Google Search Console, SEMrush, or similar. Excellent communication and writin...

I'm desperately seeking the services of a highly experienced cybersecurity expert. I've been encountering multiple issues with my phone and internet provider for over a year now. Here's my predicament: - I've been noticing strange devices connected to my internet, far exceeding the number of devices I own. I recently discovered twenty-three odd devices linked to my account. - In addition, the apps on my phone are shuffled and changed around - without me initiating such changes. - Adding fuel to fire, I received a breach of security letter from AT&T, making me seriously concerned about the security of my digital spaces. The successful candidate should have substantial experience in handling such cybersecurity issues, demonstrating robust track r...

I'm looking for an experienced writer to create a custom children's book for preschoolers. The narrative should revolve around the adventures and experiences of a girl in their first year. Requirements: - Develop a continuous storyline: The book should follow a single story arc, unfolding the protagonist's adventures and growth over the year. - Write engaging, age-appropriate content: The story should be written for preschoolers, so it needs to be simple, engaging and age-appropriate. - Incorporate educational elements: It'd be great if the story could incorporate some educational aspects like basic life lessons, shapes, colors, etc. Ideal Skills and Experience: - Proficient in creative writing, particularly for children's stories. Prior experience writin...

I need a web application built to facilitate the delivery and collection of ice cream. Here's a brief of what I'm looking for: -plan for delivery depends upon the customer orders - Map Integration: The application needs to integrate maps for tracking deliveries. -collection money with denomination entry and expenses entry for driver and salesman The workflow should be inclined towards invoiced and delivery system.

I am seeking a highly skilled full-stack developer proficient in React JS, Nest JS, CSS, HTML, and AWS. Key responsibilities: - Develop, implement and troubleshoot new features in a custom CRM platform - Utilize modern design principles to enhance visual appeal and usability - Handle full-stack development processes from conception to deployment Required Skills and Experience: - Solid experience in React and Nest JS development - AWS proficiency - Expertise in CSS and HTML - Proven understanding of CRM project management - Accustomed to modern design aesthetics Do not hesitate to bid if you have strong problem-solving capacities, a keen eye for modern design, and a comprehensive understanding of AWS. Your unique expertise in CRM platforms like Perfex CRM will be a significant...

...are seeking a skilled developer with experience in web app development, especially in the financial sector. Key Features: 1. User registration and login using Aadhar 2. Integration of third-party APIs for data 3. Bank authorization payment system 4. Secure data storage 5. User metrics and tracking system with API 6. Possible integration of a loan application and approval module in the future Ideal Skills and Experience: 1. Previous experience in similar web-based applications, particularly in the financial sector. 2. Proficiency in relevant programming languages and frameworks, with a preference for JavaScript 3. Strong understanding of user experience and interface design. If you have the skills and experience to develop this application, we...

I'm looking to develop a chat application that supports both web and mobile platforms. It needs to be built with the following specific requirements in mind: - Multilingual Support: The application should be designed to support a specific non-English language. The chat interface and all user interactions should be seamlessly available in this particular language. - User Authentication: In order to enhance security and ease of access, the preferred method of user authentication is through phone number with OTP. This ensures that user access is secure and can be easily managed. The ideal freelancer for this project should have: - Proficient in both web and mobile app development. - Prior experience in developing multilingual applications. - Sk...

I'm looking for a skilled 3D modeler to create a detailed architectural model. This model is for the "existing building" and will be used by me to develop the architectural design after. I would prefer it be modelled in Rhino but it's ok if cheaper and faster in sketchup Key Requirements: - Specialization in architectural modeling - Proficiency in 3D modeling software (e.g. Rhino, SketchUp) - Experience in creating models for visualization purposes Prove that you've read the job description by starting your bid with the word READ.

I'm...me to create a new digital currency based on the Cardano blockchain. Key Project Details: - The primary function of the coin will be as a digital currency - The consensus mechanism should be Proof of Stake (PoS) Skills and Experience: - Strong background in blockchain development, particularly on the Cardano platform - Experience in creating digital currencies and implementing PoS mechanisms - Understanding of the regulatory framework for new crypto projects - Ability to provide guidance on the overall coin development process Deliverables: - Fully functional Cardano-based digital currency - Documentation on the consensus mechanism and any other technical details - Support with the launch and initial deployment of the coin Budget is negotiable based on ...

I need to extract pricing information and contact details from a Chinese website for market research and supplier contact purposes. - Extracting Contact Details: - The project also involves obtaining contact details from the website. This would typically include email addresses, phone numbers, names of suppliers, and any other relevant contact information. - It is important that this data is collected accurately and in a structured format for use in supplier outreach. Ideal Skills: - Proficiency in web scraping and data extraction. - Familiarity with Chinese websites and text. - Experience in market research and supplier sourcing. - Ability to organize data for easy analysis. - Attention to detail and accuracy in data collection. If you have experience in these ar...

I'm in search of an experienced and skilled developer who can create a remote desktop control application for Windows and Mac. Key Features: - File Transfer: The application should allow for seamless transfer of files between the remote system and the controlling device. - Real-time Chat: It should include a chat functionality to enable communication between the remote system and the controlling device. - WiFi Connection: The application should be able to function over a WiFi Connection. The program has to run in both windows and mac systems. The ideal candidate will have: - Proficiency in Windows and Mac application development - Experience in developing remote control applications - Familiarity with features like file transfer, real-time chat, screen tra...

I'm looking for a professional Unity developer to create a puzzle game specifically for PC platform. Key Requirements: - Expertise in Unity: Proficient in creating game programs within Unity. - PC Game Development: Experience in developing games for PC platform. - Puzzle Game Design: Able to design and develop engaging puzzle mechanics. Your tasks will include: - Designing and Developing: You will be responsible for crafting the game's mechanics and features within Unity. - Playtesting: Ensuring the game is well balanced and engaging. - Bug Fixing: Addressing any issues that may arise during development. I'm looking for someone who is able to work efficiently and communicate effectively throughout the project. Please provide examples of your previous game developm...

I'm in search of a proficient and experienced app developer from India to build a top-notch Fantasy Cricket and Betting app. The app should be designed for both iOS and Android platforms. Key Features: - In-app Payments: The app must incorporate a seamless and secure in-app pa...crucial aspect of the app and must be user-friendly and intuitive. Ideal Freelancer: - Proficient in app development, particularly in the fantasy sports and betting niche. - Previous experience in creating similar apps with in-app payment and leaderboard systems. - Strong understanding of the Cricket market. - Proven track record of delivering high-quality and user-friendly mobile applications. - Based in India. Looking forward to hearing from talented and experienced app developers who meet the ...

I WILL DELETE YOUR BID IF YOU DO MOT TEAD I need to automate a process for onboarding a financial session. It should be web-based to keep the cost down. Currently I ask them to break down some of their finances manually. I want to make an interactive interface that asks them questions (to name expenses and add up the amount) with the aim of generating a report consisting of 4 sections: Housing Transportation Food Essentials It should start by asking consent to share this information with me to analyze it. I would also like: name, email age, then how much money they make and whether they make it biweekly, annually or monthly. (This needs to be translated to a monthly figure) Each section will ask questions about the kinds of expenses relevant to them. They can sel...

I need an efficient and experienced professional who has a good understanding of Google Sheets and data analysis and entry. Specifically, I need: - Creation of PLP by Copying-Paste Data entry. - Searching a Google sheet for specific products that should be on that PLP - Manually adding each product to that specific PLP based on the results from the sheet A full and detailed brief is available.

More details: Is this project for business or personal use? For starting a new enterprise What information should successful freelancers include in their application? Detailed project proposals How soon do you need your project completed? ASAP

...looking for a talented graphist to create realistic style artwork for a new card game. The card designs need to be simple with minimal elements to ensure they are clear and easy to understand during gameplay. Key Responsibilities: - Produce high-quality, realistic artwork for a card game - Create simple, minimalistic designs for the cards - Design a logo that encapsulates the theme of the game - Develop a visually appealing and informative rulebook for the game Ideal Skills: - Proficiency in realistic art styles - Ability to design simple, minimalistic artwork - Experience with logo design - Graphic design skills for rulebook creation - Strong communication and collaborative skills If you have a passion for card games and experience in creating engaging, realistic design wo...

We are a digital marketing company seeking an experienced web developer to create a web application with functionalities similar to Buffer. Our goal is to enable users to schedule posts on various social media platforms and manage them from one place. Required Skills: Experience in developing web applications. Proficiency in programming languages such as JavaScript, HTML, CSS. Ability to work with web frameworks such as React, Angular, Vue.js, etc. Familiarity with working with APIs of social media platforms like Facebook, Twitter, Instagram, LinkedIn, etc. Understanding of data security and user privacy concerns. Ability to work in a team and communicate effectively with other members of the project team. Application Functionalities: Scheduling...

I'm looking for a skilled 3D visualizer to help me create detailed models that will be integral in the prototyping and testing phase of our product development. Key Responsibilities: - Develop 3D models with moderate detailing and textures, prioritizing functionality without compromising on visual appeal - Collaborate with our product development team to ensure the models accurately represent our vision and technical requirements - Provide revisions and adjustments as necessary throughout the prototyping and testing phase Ideal candidate: - Proficient in 3D modeling software like Blender, Maya, 3ds Max, etc. - Prior experience in product development visualization, particularly for prototyping purposes - Strong attention to detail and ability to balance functionality with aest...

...emissions in their operations. 1. Literature Review: Summarize relevant research and findings on carbon capture technologies. 2. Technology Briefs: Provide a brief overview of each technology, including key features and operational principles. 3. Influence Diagram: Create a diagram that shows how different factors related to carbon capture technologies influence each other. 4. Decision Tree (EMV): Develop a decision tree that calculates the Expected Monetary Value (EMV) for each technology option. Need to use probablity for this 5. Risk Profile: Analyze and document the potential risks associated with each technology. 6. Cumulative Risk Profile: Compile the risks over time to show their cumulative impact on the project. The project presentation and report should include the...

I'm urgently looking for a web scraping expert who can help me gather information from various medical service provider websites. Key Requirements: - Extract doctor names, contact information, medical service details, and additional data such as phone numbers, specialties, and participating plans. - The information should be pulled from three specific websites - Website 1, Website 2, and Website 3. Your deliverable: - The scraped data should be compiled into a CSV format for easy analysis and integration into our system. Ideal Skills: - Proficient in web scraping and data extraction - Advanced knowledge in handling and exporting data formats like CSV - Experience in scraping medical websites or similar domains would be a plus. Please bid only if you can st...

I am looking for an expert freelancer to develop a software that will expedite my web scraping process. I have identified the need to automate if possible the solving of image-based reCAPTCHA challenges. Key Requirements: - Practiced experience in automation and CAPTCHA solving. - Familiarity with various web scraping technologies and debugging will be vital to this project's success. The ideal freelancer for this project would have a proven track record in web scraping, specifically with handling reCAPTCHA challenges and previous experience with 2captcha will be considered an advantage. Let's bypass these hurdles together and get the necessary data!

I'm seeking a skilled software developer to join our dynamic IT team. The ideal candidate will possess expertise in Perl, Python, and XML/XSLT, and should be familiar with MySQL. Responsibilities: Develop And Maintain Software Applications Using Perl, Python, XML, XSLT, And Database Technologies. Design And Implement Data Transformation Processes Using XML And XSLT. Write Efficient, Clean, And Reusable Code That Complies With Company Standards And Best Practices. Collaborate With Project Managers, Business Analysts, And Other Team Members To Understand The Requirements And Provide Technical Solutions. Perform Database Management Tasks, Including Design, Modifications, And Performance Tuning. Assist In The Integration Of New Software And Systems Into Existing Environments. Mai...

...THEN BID . I'm looking for a skilled WordPress developer who can help me build a customized, responsive, and mobile-optimized website within 30 days. Key Requirements: - Custom Design: Create and integrate unique design elements that align with my brand and vision. - Third-Party Services Integration: Implement social media sharing and email marketing platforms. - Advanced Functionality: Develop additional functionalities to enhance user experience. The ideal freelancer for this project should have: - Extensive experience in WordPress website development and customization. - Expertise in integrating third-party services like social media sharing and email marketing platforms. - Ability to work efficiently and deliver high-quality work within a tight deadline. Your ...

I'm seeking a virtual assistant fluent in English to assist me with a variety of tasks, both personal and professional. Tasks: -Data Entry: I need help with data entry, but the anticipated workload is less than 10 hours per week. This will involve inputting and organizing various types of data. - Graphic Design: You should be adept at creating eye-catching and pr...language skills and ability to follow directions - Proven experience in data entry, video editing, and graphic design - Good organizational and time-management abilities and knows deadlines - Strong communication skills - Experience with tutorial creation and email management is a plus This is a great opportunity for a virtual assistant who thrives on a varied workload and is keen to grow and develop in a dynam...

I will develop and publish your android app

I need a senior Nextjs developer to convert figma to frontend urgently.

...necessary). All of these components have been described in the below images, including the database updates. I’m also happy if you want to discuss any better ideas for database structure! Hosting services on GoDaddy. I will send through all digital assets once the job starts. I have set up all of the products on woocommerce for the backend, the user will not see the typical "shop" interface - see web design below. * responsive for mobile * set up Google analytics Timeframe for delivery: 2-3 weeks...

I need a small web app that will integrate two API's to get information from a database, then display the address on the screen for the user to confirm. Once confirmed, the user will submit the request to get a unique link that expire's once it is used once. They can then have an option to copy, or share the link on their socials. Whoever picks up the link it takes them to a page where they can enter how much they will sponsor with, and then proceed to checkout and a payment API takes over. Once the payment is successful, a token is generated and displayed on screen of the sponsor, and the requestor receives an SMS or email with the token. Sponsors and requestors can have access to their history, and a sponsor can decide to sponsor a list of people in one go. Also an Ad n...

I operate a job board website and receive around 50,000 job postings monthly from Jobg8. I need a custom plugin to effectively integrate these job postings onto my website and subsequently feed them to Google for Jobs. Key Requirements: - Develop a custom plugin that facilitates the regular feed of job postings from Jobg8 to my website - Design the plugin to allow for automatic selection of job postings based on specific criteria - Ensure seamless integration of the selected job postings onto my website - Implement a mechanism to feed the selected postings to Google for Jobs Ideal Skills and Experience: - Excellent proficiency in plugin development and integration - Prior experience working with Jobg8 or similar job feed providers - Familiarity with SEO and Google for Jobs ...

I'm looking for an experienced Full Stack Developer who will be able to develop an existing web application that involves payment processing, coupled with database integration. The application will be tasked with creating bills for medical purposes. Key Responsibilities: * Implementation Functionality like cash register, Doku , and Patient Information * Understand problem of precision rounding in Javascript * Integrate a reliable payment processing system. * Create doku and medical bills in a secure, efficient, and user-friendly manner. Technical Skills Required: * Proficiency in PHP, JavaScript, HTML/CSS, JQuery, and Bootstrap. * Experience in payment processing and database integrations. Ideal freelancer should demonstrate previous, relevant experienc...

I'm looking for a remote freelancer who can help me set appointments with Shopify sellers who are interested in utilizing our AI technology to boost their conversion rate. Ideal Skills and Experience: - Proficient in Email Outreach, Phone Calls, and Social Media Messaging - Prior experience with appointment setting, especially in the eCommerce sector - Strong communication and negotiation skills - Understanding of AI technologies like recommendation engines and personalization engines Key Responsibilities: - Engage with Shopify sellers via email, phone calls, and social media to introduce our AI technology - Schedule appointments with those who express interest in utilizing the technology - Maintain a high level of professionalism and enthusiasm throughout the appointm...

Note : my budget for whole project is 20$ Project Overview : developing a web-based game that leverages the ChatGPT API to generate unique scenarios and tasks for players. The game will offer personalized experiences with secret objectives that contribute to a collective goal. **Game Flow Implementation:** 1. **User Registration and Profile Creation:** - Players sign up and create profiles. - Each player is assigned a unique identifier (UUID) for tracking. 2. **Scenario Generation:** - At the start of a session, the backend sends a request to the ChatGPT API. - The API returns a scenario that sets the context for the game. 3. **Task Generation:** - Based on the scenario, the backend formulates tasks for each player. - Tasks are personalized ...

...need of a talented full stack developer who is proficient in PHP, MySQL, and front-end technologies. The project involves the creation of a user-friendly data collection application and its corresponding dashboard. Key Features Needed: - **User Authentication**: Users should be able to create accounts and securely log in. - **Real-Time Data Updates**: The application must allow for smooth real-time data updates and changes. - **Data Visualization**: Incorporate clear and intuitive data visualization tools that can help users understand the data intuitively. Platform: - The application needs to be developed for both web and mobile platforms. Dashboard Interactions: - Users should be able to interact with the dashboard in the following ways: - **View**: ...

The deliverable is the files associated with a Large Language Model (LLM) Retrieval Augmented Generation (RAG)-based chatbot, the full-page chat interface screen, and the miniature chat interface. This job does not include deployment of the files to the production system. A demonstration of the chatbot and its capabilities will be provided upon completion of the project. The chatbot will limit itself to agreed upon topics/information and can handle several conversation turns (i.e., will maintain a temporary chat log per interaction for conversation flow). The chatbot will also be configured to store all chat logs locally. The chatbot will make use of an information store, so domain- and county-specific data will be available. Files will be documented in case of future modificati...

Note : my budget for whole project is 20$ Project Overview : developing a web-based game that leverages the ChatGPT API to generate unique scenarios and tasks for players. The game will offer personalized experiences with secret objectives that contribute to a collective goal. **Game Flow Implementation:** 1. **User Registration and Profile Creation:** - Players sign up and create profiles. - Each player is assigned a unique identifier (UUID) for tracking. 2. **Scenario Generation:** - At the start of a session, the backend sends a request to the ChatGPT API. - The API returns a scenario that sets the context for the game. 3. **Task Generation:** - Based on the scenario, the backend formulates tasks for each player. - Tasks are personalized ...

I'm in need of an app developer who can create a messaging app similar to WhatsApp & twitter . The app should include the following features: - Group Chats: Users should be able to create and p...who can create a messaging app similar to WhatsApp & twitter . The app should include the following features: - Group Chats: Users should be able to create and participate in group conversations. - Voice and Video Calls: The app should support both voice and video calling. - File Sharing: Users should be able to share files of various formats and sizes. I'm looking for a professional who can develop this app for me at a reasonable cost. Please provide a quote along with your proposal. Experience in developing messaging apps, particularly with the features mentioned,...