In the past few years, we have covered plenty of iPhone compatible exercise bikes here that give you a good workout at home. Many of them take a bit of space though. The MERACH S04 Bluetooth Under Desk Exercise Bike has a more compact design and gives you a low impact workout as you watch TV or do work. It has 16 levels of magnetic resistance. Its app gives you access to various training modes.
This pedal exerciser has a LCD display to show speed, time, distance, and calories burned. It has 280lbs load capacity. It weighs only 17.8lbs, so you can easily take it with you anywhere. You can use this exercise bike with resistance bands to further push your body. It even works as an arm exerciser when put on a desk.[where to get it]