The KETTLER S-FIT APP is the perfect add-on for all KETTLER S-Line equipment,  and can be used as a multi-faceted motivational support. In conection with a Bluetooth enabled smartphone or tablet (Android/iOS), you will be able to develop your full potential in no time at all: simply connect to the KETTLER S-FIT APP via Bluetooth, and choose from the many challenging training modes available: Use the FUN mode to burn off burgers, pizza or soft drinks, or select the CHALLENGE mode for realistic training routes with a variety of terrain profiles. In EXPERT mode, all training-relevant information, including step frequency, pulse and heart rate are monitored and stored in detail. You can synchronise your performance with your own  KETTFIT account, and share your results with friends on Facebook - making your living room a connected training centre.