Privacy policy

Munga GeoSurvey: your data stays on your device.

Munga Tech Ltd, Meanwood Vorna Valley, Lusaka, Zambia · Effective 23 October 2026 · App version 0.7.6

Munga GeoSurvey is a survey calculation app for Android, Windows and the web, published by Munga Tech Ltd. This policy explains what happens to the information you enter into it. In short: your data stays on your device. The one exception is the optional online background map, described below, which you turn on yourself.

What the app stores

The app stores the projects you create (point IDs, coordinates, heights, descriptions, project names, calculation inputs and results) and your settings, such as the surveyor name you choose to print on computation sheets. If you use the Control screen, it also stores the control stations you opened recently, any recovery notes you record and any control stations you import yourself. All of this is stored only on your device, in the app's own storage.

What we collect

Nothing. Munga Tech Ltd does not collect, receive, sell or share any personal or survey data from the app.

  • The web app can request the optional Google background described below. Installed Android and Windows apps keep offline permissions and open online maps in the web browser.
  • There are no accounts, advertising, analytics, tracking or third-party software development kits.
  • The app does not access your contacts, camera, microphone, phone calls or messages. It uses your location only as described below, on the device.

Your location

Two screens use your device's location. The Control screen shows the survey control stations nearest to you. The Field screen places your position on the project's coordinate grid, so you can set up on a known point, stake out points and measure new ones. The app asks for location only when you press Use my location, Start GPS or begin a Field task, and your device asks you to allow it first. You can refuse and still use every other feature, including entering a position by hand.

  • Your position is used only inside the app, in the device's memory: to sort stations by distance, to show the direction and distance to a station or point, and to average positions.
  • During offline fieldwork it is not sent to Munga Tech Ltd or anyone else. The optional online basemap is described below. Individual position readings are never stored. Only results you choose to save are kept with your project, like any other point: a point you measure, a stakeout report, or the shift from setting up on a known point.
  • Location updates stop when you press Stop location or Stop GPS, leave the Control or Field screen, or switch to another app. The app never uses location in the background.
  • Guide me and Stake out also read the device's compass while they are open, on the device only.

Online background map (optional)

The Control map and the project Plot can show a Google map or satellite photo behind your stations and points. This is off until you turn it on (View, Map background, or Project & settings, Online map). It works only while the device is online.

  • While it is on, the app asks Google's Map Tiles API for the map images of the area shown on screen. Google receives which area that is, at what zoom, and your device's internet (IP) address. If the map is centred where you are standing, that area shows your approximate location.
  • Project files and raw GPS readings are not uploaded. Google receives your IP address, API key and viewport. A view centred on your phone can reveal its approximate location. Requests carry no account or cookies.
  • Map images are not saved for offline use. Google handles these requests under the Google Privacy Policy (policies.google.com/privacy).
  • Choose Schematic (offline) to turn it off. The app then makes no requests to Google.

Opening a map

If you choose Navigate on a station, the app hands the station's position (not yours) to the maps app or website you pick, such as Google Maps or OpenStreetMap. That app or website then works under its own privacy policy.

Files you export or share

When you export a backup, CSV, DXF, KML, GeoJSON or PDF file, a station list or the recovery log, or print a sheet, the file goes only where you choose to save, print or share it. Please consider what a file contains before sharing it with others.

Device backups

On Android, if you have turned on your device's backup, Android may include the app's stored projects in your own device backup (for example your Google account backup), under the settings you control. Munga Tech Ltd has no access to these backups.

The web version

The web app is downloaded from this website once and then runs in your browser, which keeps a copy so it works offline. Your projects are kept in your browser's storage for this website. Clearing this site's data in your browser deletes them, so keep backups.

Keeping and deleting your data

You can delete individual points, records and projects inside the app at any time. Uninstalling the app deletes all of its stored data from the device. Because we never receive your data, we cannot recover it for you: please keep your own backups using Back up all projects under Project & settings.

Support

If you contact us for support and choose to send us a file or information, we use it only to answer your request and delete it when it is no longer needed.

Children

The app is a professional tool intended for adults and is not directed at children.

Changes

If a future version adds features that handle data differently, such as cloud sync, we will update this policy and the app's store listing before that version is released.

Contact

Munga Tech Ltd · info@mungatech.net