Sweatcoin app promises money for exercise, but critics warn it'll drain your battery

By Elizabeth Anderson

Sweatcoin, an app that promises to reward you for simply exercising, has shot to the top of the app downloads chart despite criticism about the rewards on offer and the amount of battery it uses.

Sweatcoin monitors your physical activity through your smartphone or Apple Watch, then assigns reward points that can be spent at retailers including Graze and Fitbit.