Adult Video Call App Development

I'm looking for an experienced Android developer to create an adult video call app. The app should incorporate a coin-based transaction system, allowing users to purchase coins with real money for in-game purchases.

Key Features:
- Video calling functionality
- Coin-based transactions
- In-game purchases

Ideal Skills and Experience:
- Strong Android development experience
- Expertise in integrating payment systems
- Experience with video call APIs
- Knowledge of in-app purchase mechanics

Please provide samples of similar work done.