Rewards for stepping outside

Mr Anton Derlyatka (left), founder of highly popular fitness app Sweatcoin, with Mr Ranbir Arora, an executive at the company.
Mr Anton Derlyatka (left), founder of highly popular fitness app Sweatcoin, with Mr Ranbir Arora, an executive at the company.PHOTO: THE NEW YORK TIMES

Sweatcoin, a fitness app, awards coins to users when they run or walk outdoors