TopoWalk is the field surveying app that turns your phone's GPS and barometer into an
accurate measuring tool — at no cost.
Walk the perimeter, capture points, and get area, perimeter, slope and a print-ready
report, all in your pocket.
✅ **Barometric Precision** — the phone's pressure sensor gives you accurate elevation
changes, not just GPS.
✅ **Real 3D Visualization** — see your surveyed polygon in an isometric 3D view, right in
the app.
✅ **Built for Professionals** — export to QGIS and ArcGIS via GeoJSON.
✅ **PDF Reports** — a full A4 report, ready to print or send to a client.
✅ **Made a mistake? Fix it.** — reopen a saved survey and remove or insert a point at any
position, without re-measuring the whole perimeter.
✅ **Backup to your Drive** — your whole history fits in one file, stored wherever you want.
Your work doesn't disappear if your phone breaks.
✅ **Slope in %** — not just the angle: the number people working in grading and drainage
actually use.
✅ **100% Free** — no ads, no in-app purchases.
Ideal for farmers, engineers, surveyors, hikers, and anyone who needs to measure area,
distance or elevation in the field.