Here is another compact iPhone compatible exercise bike that can give you a good workout indoors. The Hammer Cardio 5.0 BT Bike is compatible with Kinomap, BitGym, and iConsole+. It comes with 12 programs for beginners to more advanced athletes. It has a saddle that you can adjust horizontally or vertically to get a comfortable ride.
The Cardio 5.0 Ergometer has convenient wheels, so you can easily move it around. It has adjustable footcaps for uneven surfaces.[where to get it]