Millstone
Peak District walks, offline
Millstone guides you round Peak District walks without needing a signal. The name comes from the National Park's own emblem, the millstone carved on the boundary stones around the park.
Offline Ordnance Survey Maps
Ordnance Survey mapping of the whole National Park, with contours, is built into the app. It works in aeroplane mode, deep in a dale with no coverage.
Follow a Route
Choose one of the bundled walks or import your own GPX file. Millstone shows where you are on the route and how far it is to the next turn.
Apple Watch
Leave your phone in your pocket. Your watch shows the distance to the next turn and taps your wrist if you leave the route.
Record Your Walk
Each walk is saved to Apple Health as a workout, so it counts towards your activity.
Support and Privacy
Questions or problems? See the support page. How your data is handled is covered in the privacy policy.
Contains OS data © Crown copyright and database right 2026.