COIN uses your GPS to earn "COIN" on the go, this is the apps currency.
You can then swap this coin for crypto such as XYO an ETH token or BTC and ETH. You can even swap for physical items such as games consoles.
Using the app itself is kind of like pokemon go, you mine squares as you go and people can leave mines around with a message and some coins when you mine it.
It's a pretty novel app, if you're on the go a lot it may be worth your while.
It's time to get your Invitation.codes account too 😎