Grocery Delivery App Development

I need a comprehensive grocery delivery application that operates on both Android and iOS platforms. The app should connect multiple shops with various end-users, similar to Grab's delivery service.

Key Requirements:

1. Mobile App for Customers:
- User authentication via phone number with OTP
- Payment integration for credit/debit cards
- Real-time order tracking with live updates

2. Mobile App for Drivers:
- Order notifications
- Route navigation
- Earnings tracker

3. Mobile App/Desktop for Stores:
- Inventory management
- Order management
- Sales analytics

4. Management Dashboard:
- Privileges for in-house users
- Overall order and delivery management
- Analytics and reporting

Ideal Skills and Experience:
- Experience in developing multi-platform mobile applications
- Proficiency in real-time tracking technologies
- Strong background in payment gateway integration
- Prior experience with inventory and order management systems

If you have a prebuilt app, please send a demo.