2025-07-03 00:00:00 Inspired by the book of the same name by John Joseph Hayward, the Dartmoor 365 app allows you to record your visits to each of the 365(366) square miles of the Dartmoor National Park. The app will log your visit to each square, either manually or automatically whilst you walk, by turning on the Autologging feature. The app will play a sound when you enter each square (can be turned off).