In which languages is the app available? Changers Support December 15, 2016 10:06 Updated Follow The app is available in English, German, Spanish, French, Slovak, Polish, Hungarian and Czech. Related articles Which operating system version is supported? How does the app measure the kilometers? Where can I get the Changers CO2 fit app? Who can use the CO2 fit app? Comments 0 comments Article is closed for comments.