A walking app that routes you through the green bits.

A pedometer tells you what you already did. FitWalk works out where you should go — it builds a route from your own front door and scores the options on how much green space they actually pass through, using real park and woodland boundaries rather than a guess.

Then it drops coins and gems along the route, which sounds trivial and is the reason people take the longer way round. Streaks, XP and leaderboards do the rest.

The details are where the work went. The map turns from day to night on the real sunrise for where you are standing, not on the clock. Background GPS keeps counting with the screen off — a foreground service on Android, background location on iOS — because an app that stops counting in your pocket is not a walking app.