Hi, Firas H. As Flutter Expert, I am very interested in your project.
I am very familiar with GPS and IP Function.
As you know, Flutter is the best cross plat form for both of Android and iPhone.
If you want, I can build your project with React Native.
I have mobile and backend skills with 7+ years.
My main goal is client's satisfaction and success.
I will do my best for this and you can see my promise during every development stages.
I wish to build perfect project with you.
Thanks & Your Sincerely.