I need an iOS/Android app for a Chinese Restaurant for customers to collect points

Hello there,

I need to build an iOS/Android app for a Chinese restaurant with the following specifications:

- Sign-up page where we'll collect, name, mobile number and email address.
- 2 restaurants, option to choose which restaurant you're going at the launch of the application.
- Customer will scan a bar code/qr code from the receipt received after ordering and a number of points will be added into their account.
- Customer can spend the points after a certain number is accumulated.
- Customer can spend the points at any of the restaurant locations.
- We have to be able to remove the points from the customer's account.

Screens:
1. Sign-Up/Home - choose restaurant
2. Profile page which will show the points and number of purchases made
3. Scan QR code page
4. Contact page