Capture an approximate global reference position, convert between coordinate systems
and land units, and prepare data for georeferencing your local survey grid.
Built for field surveyors — and it works with no signal at all.
272.25, 250 and 225 sq ft presets, plus any custom value
Foot standard
International foot (default) or US survey foot, selectable per project
File formats
CSV, TXT, KML and KMZ — import and export, both directions
Compass
Magnetic heading from device sensor; UTM grid convergence computed from position and zone; declination user-supplied
Storage
Local database on the device. Converted files are held in app cache and cleared automatically after 24 hours
Platform
Android. Requires location permission for GNSS features
Please read — accuracy.
Mobile GNSS coordinates are intended for approximate georeferencing and map alignment.
Relative survey dimensions and levels should remain based on total-station observations
or approved survey control. Compass headings come from the device magnetometer and are
affected by nearby metal and magnets. Survey GeoLink is a companion tool — it is
not a replacement for survey-grade GNSS, RTK or gyro instruments.
Privacy
Your Data Never Leaves Your Device
Not a policy promise alone — the released app does not even request internet permission.
No Data Collection
No accounts, no analytics, no advertising, no crash reporting and no cloud sync. Nothing you capture is sent anywhere.
No Internet Permission
The release build does not declare the internet permission at all, so your coordinates physically cannot be transmitted.
Optional PIN Lock
Lock the app on a shared device. The PIN is stored only as a salted hash — never in readable form.
You Control Deletion
Delete projects in-app, or uninstall to remove everything. Files you export elsewhere are yours and are never touched.
What’s Next
Coming to Survey GeoLink
Planned features — these are on the roadmap, not in the app yet.
SOONAveraged Point CaptureStatic GNSS averaging with stability and outlier statistics.
SOONControl-Point LibraryPhotos, notes, point codes and duplicate detection per project.
SOONTwo-Point CalculationsInstant ΔE/ΔN, distance, azimuth and bearing between points.
SOONLocal-to-Global TransformTranslation, similarity and least-squares fits with residuals and RMSE.
SOONMap & Site GeometryPoints, boundaries and polylines over standard or satellite maps.
SOONExport SuiteDXF and PDF survey reports with full coordinate metadata.
SOONDrawing AlignmentGeoreference a raster site plan or DXF using control points.
SOONBackup & RestoreFull local project backup and one-tap restore.
Get Survey GeoLink
Free to use, no account required. Android phones and tablets.
Is Survey GeoLink accurate enough to replace my total station?
No, and it is not meant to. Phone GNSS gives you an approximate global reference position — typically a few metres — which is ideal for georeferencing a drawing or aligning a site to a map. Your relative dimensions and levels should still come from total-station observations or approved survey control.
Does it work without an internet connection?
Yes, completely. Every calculation, conversion and file operation runs on the device. The released app does not even request internet permission, which is why it can be used in remote field locations with no signal.
Which UTM zones are supported?
All 60 zones in both hemispheres, with automatic zone detection from your position and the correct EPSG code. The official grid exceptions around Norway and Svalbard are handled, and you can override the zone manually when a project spans a boundary.
Can I import a boundary from Google Earth?
Yes. Export your placemarks or boundary as KML or KMZ from Google Earth, import it in the Files tab, and export the same points as UTM easting/northing in a CSV to take to the field. It works in the other direction too.
How does the marla setting work?
Marla size varies regionally, so it is never hard-coded. You choose 272.25 sq ft (traditional), 250 sq ft, 225 sq ft (25 sq yd), or enter any custom value per project. Kanal is always 20 marlas of whichever definition you selected.
What is grid convergence and why does the compass show it?
Grid convergence is the angle between grid north and true north at your position — it grows the further you work from your zone's central meridian. The app computes it exactly from your position and zone, so you can convert a true bearing to a UTM grid bearing when relating total-station work to the grid.
Is my survey data sent to your servers?
No. There are no servers involved. Projects, points and settings live in a local database on your phone. Converted files sit in the app's cache and are cleared automatically after 24 hours; anything you export and save elsewhere belongs to you and is never touched.
Is it free?
Yes. All the features listed on this page are free to use, with no account and no ads.
