Trail Marker: Track & Flag

Picking blueberries, looking for chanterelles or sweeping a field with a metal detector? Trail Marker paints the ground you cover on the map as you walk, so you never search the same patch twice. Flags lead you straight back to the best spots.

COVER NEW GROUND

• Your path is drawn as a band as wide as your sweep, so you see exactly what you have covered.

• The phone vibrates and warns you when you step onto ground you have already covered.

• Time, distance and covered area are shown live.

• Recording continues in the background, even with the screen off.

FLAG WHAT YOU FIND

• Drop a flag with one tap: blueberries, lingonberries, chanterelles, coins, relics, jewellery, dig later and more. You can also make your own categories.

• Add a note and photos.

• A compass arrow and the distance guide you back to any flag.

A MAP FOR EVERY SEASON

• Keep separate sessions, such as "Blueberries 2026" and "Lingonberries 2026", and switch between them.

• Measure areas and distances on the map.

• Download the map for offline use before you lose mobile coverage.

• Standard and terrain maps based on OpenStreetMap.

• Import and export GPX files.

YOUR DATA STAYS ON YOUR PHONE

No account is needed. Tracks, flags and photos are stored only on your device.

Trail Marker is free with ads. A one-time purchase removes all ads.

Map data © OpenStreetMap contributors.