I tried the Apple store's most popular fitness cryptocurrency app - and discovered a potential flaw

I'm no stranger to fitness apps, having tried everything from an app that promises the benefits of a trip to the gym in seven minutes to a tool that lets you track and share your runs with other users.

But when I first heard about Sweatcoin, an app that pays you in cryptocurrency to reach your fitness goals, I was intrigued.

Naturally, I had to give it a shot. Here's how it went.