Hello,
I carefully read your project requirement it's one type of IOT based app. We already create IOT based project for our client one is Smart Home App, B2B App and more.
Smart Home is IOT and Cloud-based app to control your home equipment like AC, Light, Fan Switching and more.
B2B is Hardware-based data transmission and location sharing in a mobile device using Bluetooth using Arduino Based BLE device.
We have also expert in Python, Android, Php, IOS, Amazon Skills. Our work is a perfect solution for the client.