Flight Data Recorder is a real Flight Recorder that allows you to record altitude, speed and track of your flight or any other travel.
Just open the app, select the sample rate and activate the recorder. Flight Data Recorder will save all location data as Altitude, Direction, Speed, Latitude, Longitude, and will show you a graph with all the datas, track included.
This app records data also in background mode, so please be careful in using it.
Continued use of GPS running in the background can dramatically decrease battery life.