SWEATCOINS, Earn REAL Money for WALKING!

It can be difficult to stay motivated when trying to get fit or lose weight, but being rewarded for every step you take could make things a little easier.

That's the thinking behind the Sweatcoin app.

It tracks the number of steps using the iPhone's built-in sensors and uses 'complex software' to make sure people aren't cheating.

It then rewards them with a digital currency called 'sweatcoins' that can be redeemed with select retailers.