What it does
- Records with the screen off. GPS keeps running in your pocket; a lock-screen notification shows distance, time and GPS status.
- Saves it as a course. The track is tidied onto real paths where the map has them, and kept exactly as recorded where it doesn't.
- Follows a saved course. Your position sits on the line, a warning appears if you drift off it, and turns are called out ahead.
- Extends, reverses or trims. Start a course from the nearest station or bus stop instead of wherever the recording began.
- Imports and exports GPX. Open a GPX file from any app, or send a course to a friend as GPX or as an image.
A walking aid, not a survival tool: the final judgment on where to step is always yours.
What it doesn't do
- No account, no sign-up, no cloud.
- No ads, no in-app purchases.
- No tracking. Your courses and walks live only on your phone.
A look at it
Built-in official trails
Park connector loops and nature trails published as open data by government agencies. Singapore is bundled; the rest are downloadable packs.
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Singapore
National Parks Board via data.gov.sg · Singapore Open Data Licence
data.gov.sg/datasets/d_306cc1018cb733346681883ee6d73054
data.gov.sg/datasets/d_a69ef89737379f231d2ae93fd1c5707f -
Hong Kong
Agriculture, Fisheries and Conservation Department via CSDI · data.gov.hk terms
portal.csdi.gov.hk/geoportal/?datasetId=afcd_rcd_1665568199103_4360 -
Japan
Ministry of the Environment · Public Data Licence v1.0
env.go.jp/nature/long-trail.html -
United Kingdom
Natural England, National Trails (England) open data · Open Government Licence v3.0
gov.uk/government/organisations/natural-england -
New Zealand
Department of Conservation, DOC Tracks open data · CC BY 4.0
doc.govt.nz -
South Korea
Korea Hiking & Trekking Support Center via data.go.kr
data.go.kr/data/15108080/fileData.do
TrailKeeper is not affiliated with or endorsed by any of these agencies. Trail data may be out of date; always follow signs on the ground.