The Red Tail app is for use with the Optex Systems Red Tail Compact WiFi Spotting Scope/Camera. It is used to control camera functions and allow multiple simultaneous users to view and capture still photos and videos using only a WiFi signal created by the internal camera. No internet connection required. The system provides a fixed 45 X optical magnification plus up to an additional 4 X digital magnification from the 5 MP camera.