Hello Sir,
Good morning,
Checked your project related to App for Cash Wash Business,
I could help you in creating the App, where user can Register/user, check the Available time slot for cash wash, (choose type of wash /pricing etc), user can provide feedback too.
Admin on the other hand to create/edit the pricing/type of wash etc.
If you have domain/server ,we could create mysql server, if not, we can create firebase server too
If interested, lets chat
Thanks
Apeetha