Currently the following apps can be directly connected with Lifesum in order to track your movements (and more):
You can connect them under Settings/Automatic Tracking in Lifesum.
And of course, there is also the option to connect with Health (iOS) and Google Fit (Android) in order to calculate just steps with the built-in phone trackers.
Also these options can be connected under Settings/Automatic Tracking. In order to use Google Fit, please download it from GooglePlay. Health on iOS is preinstalled.