ONYER is a simple bicycle power training application. It works for bikes fitted with ANT+™ sensors mounted on a ‘turbo’ trainer. It receives ANT+™ data broadcast from your bike’s speed sensor, cadence sensor and your heart rate monitor. It displays your sensors’ values and plots the performance of a training session. If your bike is mounted on a supported trainer, ONYER will also calculate your virtual power output and calories burnt, letting you use it for a power training programme. ONYER will keep a history of your training rides and lets you track your performance over time.