This application works on iPhone 3GS, 4, 4S, 5, 5c and 5s (the iPhone 3GS and iPhone 4 must run at least iOs5.x).
She allows to register Planes, Gliders, Helicopter, Jet, ...), batteries, engines, ESC, chargers, receiver, servo and the location of flight sites.
We can also register flights and loads of batteries.
The homepage (above) summarizes the main information.
The application is available in French and English.