This app needs a set of Tindeq timer devices to work, which are wooden blocks with buttons attached. Put one device at the bottom of the climbing wall and one at the top, connect to the devices and you can start climbing by releasing your foot from the bottom device. The timer stops when you hit the top device.
The app will give you an overview of all your times for the routes youve climbed. You can also compare your own times with other people by looking at the top lists.