Fuell is a free, innovative and popular lifestyle and fitness app (iOS and Android) which incentivises and challenges its members to be more active. Users can track steps in the app or connect it to a fitness tracker. Users can join challenges to unlock vouchers, sports goods, exclusive experiences and much more. This dataset contains anonymised data at the user level. **User data** * UserPseudonym * Gender * Postcode district * Year of birth **Activity data** * UserPseudonym * Date & time * App source * Distance travelled * Activity type * Activity duration * Steps * MYZONE effort points * Average speed