The 3C Pocket Cinema Camera 4K Controller from CDA-TEK is an Android app that allows you to remotely control and monitor the main features of the Blackmagic Design Pocket Cinema Camera 4K with virtually any Bluetooth enabled Android device.
With 3C you have access to aperture, ISO, shutter angle, white balance, recording, as well as focus & zoom (with compatible lenses). Up to 6 user-defined settings for exposure, focus and zoom parameters can be saved. With compatible lenses, even transitions between stored focus points can be automated.
3C uses a single touchscreen interface with no additional submenus to control all of these functions. At the same time, the user interface is optionally scalable. This allows focus and zoom settings to be removed from the screen if there is not enough screen space on a small Android device.
A special gimmick is the integration of the interface hub. This allows the control to be passed on to compatible Bluetooth gamepads. These then offer haptic feedback when controlling by real buttons and are usually very cheap to buy.
The app costs 13,99 Euro and is only available for Android (not iOS). Unfortunately there is no demo version to try out if the app works.