I will develop an android VPN app with ads and in app purchase

Android OVPN Client provides very fast and secure way to connect to any OpenVPN server you provide. Using OpenVPN protocol, you can setup your server in any location that you want in the world. A comprehensive Control Panel is now included so you can manage your servers easily and independently from the app. For monetization, AdMob with mediation is already included in the app to maximize your revenue, but you can add any ad-networks that you prefer.

• Secure and fast VPN client using OpenVPN protocol
• Free/Premium servers
• Support for Android TV
• AdMob with mediation integration out of the box
• Google subscriptions for more revenue
• Firebase analytics
• Firebase crashlytics
• Firebase notifications and messaging
• Supports muli-languages
• Compatible with RTL languages
• Dark mode support
• Supports adding launcher shortcuts for subscribed users
• Compatible with Android 5.0 and above

Control Panel Features :

• Add and edit servers
• Most connected locations statistics
• Reorder list of servers
• Default config included in the app or custom ovpn file
• Ping test for servers availabily
• Push notifications
• Change admin email and password
• Manage settings