ESP32 Water Flow Device Integration

I need help setting up a flow monitor that uses an ESP32 microcontroller device. This device needs to communicate with a Wi-Fi hub and send data to an app on both Android and iOS platforms.

Requirements:
- Communicate with a Wi-Fi hub
- Send volume data per designated time period
- Compatible with both Android and iOS apps

Ideal skills and experience:
- Experience with ESP32 and microcontrollers
- Proficiency in Wi-Fi communication protocols
- Mobile app development (Android and iOS)
- Knowledge in data transmission and monitoring

Please provide your past relevant work experience and approach to complete this task.