Burrel Control was a previously used app that allowed users to send SMS commands between a phone and a trail camera. However, the app is no longer available for download from app stores, as its development and maintenance have been discontinued.
If you still have Burrel Control installed on your phone, you may continue to use it if you wish. Please note, however, that the app may experience malfunctions.
Remote control of the camera is still possible via SMS — you can send commands directly from your phone to the camera, or alternatively switch to the new Burrel app.