Monimoto is compatible with all iPhone models from the iPhone 5S, iOS version 10.3.1 or later; Android version 5.0 or later. 
The only other condition: your smartphone must have Bluetooth 4.0+ (BLE) as the connection between your phone and Monimoto is arranged using this technology.

Monimoto does not work with Android Marshmallow 6.0 More about this issue can be found here.