Fit or Die

work out or get buried

Fit or Die is a fitness app that kills you. You set a weekly workout goal. Hit it and you live. Miss it and your profile dies in public, a tombstone in the global feed for everyone to see. Each season you get one rival you have to outwork (random or invite a friend), and even death isn't the end. You become a ghost who haunts the living until next season. It reads your existing Apple Health or Health Connect, so there's nothing to log. It just watches, and comes for you when you slip.