Hi fellow pilot, This app allows you to focus on flying instead of noting down take-off and landing times while you are in the cockpit. The Flight Time iPad and iPhone app is automatically logging block off, take-off and landing times using GPS. All you have to do is enter your plane's stall speed so that the app knows whether you are flying a Citabria or an F-16 and turn GPS on before your flight. I am the developer of FlightTime, let me know what you think. Ganymed