Rotor Riot RR1800
The first controller with R3 and L3 support
This controller by rotor riot is the first to support the L3 and R3 buttons that have been missing from the MFi standard for so long. The company is actually run by drone enthusiasts that decided to build a controller to reliably control their drones with tactile feedback. It is also one of the few controllers that doesn't rely on it's own battery but directly attaches to your iOS device via lightning port and draws power from there.
Pros
- supports L3 and R3 Buttons
- phone clip
- runs off of phone battery
Cons
- lightning connector might become obsolete
- build quality could be better
- can only be used with iOS devices due to the lack of bluetooth