The new TB Midi Stuff app, version 2, has a lot of new features but it sells for less than € 5.
I made a template for it. With this template, the TB Midi Stuff 2 app and your iPad you can control the new performance mode and the normal mode of Fl Studio (10.6 beta and above).
People who donated some money in the past, or will do it now, are supporting the website IPadTouches.com and the development of (free) templates and articles. They will receive the template for free.
More info : TB Midi Stuff 2 template for FL Studio