Did you read the beginning? This is an extension to an existing dead man switch app whose only purpose is to hide the fact that it's a dead man switch. The underlying app is indeed a dead man switch.
It seems the web service will automatically contact whoever you have set up to be contacted, if you don't take action on the notifications from the app
It just requires you to take some action on a recurring basis. Someone who is not trying to hide that they have a deadman switch on their phone doesn't need a game, they just need a button they can push to indicate that they are still alive.
