Kurbl is a 2D cycling game for your indoor trainer: it reads the power you actually put out, turns it into movement along a route, and controls the resistance back at the device. No subscription, no account, everything stays on your device. Questions, problems, or feedback? We are glad to help.
We usually reply within a few days. Please write in English or German.
If your trainer is not found, it helps to know which device you use, which phone or tablet, and which operating system version. Connecting and reading values are free permanently and without an account, so you can always check whether your equipment works with the app before you buy anything.