This application can connect to various Kettler and Fitlinxx (CSAFE) training devices over an USB to Serial adapter and record the heart rate, speed and power.

Tested on the following devices:

Samsung Galaxy S2 (Only with Siyahkernel from Gokhanmoral)
Samsung Galaxy S3
Samsung Galaxy Note
Asus Transformer Prime
Asus Transformer Infinity
Sony XPERIA T
Sony XPERIA Z3
ZTE Axon 7

Supports Bluetooth serial adapters. This currently doesn't work with newer Kettler devices with built-in Bluetooth, only for older devices using a Bluetooth to serial adapter. (Tested with Brainboxes adapter) The Bluetooth serial adapter has to be set to 9600 baud, 8 databits, 1 stop bit and no parity before using the app.