Privacy Policy

Last updated: March 2026

Red Grid MGRS is a free, open-source application. This policy describes exactly what data the app accesses and what it does with it.

Location Data

Red Grid MGRS requests access to your device's GPS location while the app is open (foreground only). This location data is used solely to calculate and display your current MGRS coordinates on screen.

Location data is never written to disk
Location data is never transmitted over any network
Location data is never shared with any third party
When you close the app, all location data is discarded from memory

Stored Data

The following data is saved locally on your device:

All users:

Magnetic declination offset — a single number you configure (default: 0)
Pace count calibration — a single number you configure (default: 62)

Red Grid Pro users (optional one-time purchase):

Saved waypoint lists — named lists of waypoints you choose to save, stored locally on your device only
Display theme preference — your selected colour theme
Coordinate format preference — your selected coordinate display format

All stored data lives on your device only. None of it is ever transmitted anywhere.

Network Activity

Red Grid MGRS makes zero network requests. There is no:

Analytics or usage tracking
Crash reporting
Advertising network
Account system or cloud sync
Update check or telemetry

In-app purchases (Red Grid Pro) are processed entirely by Apple (App Store) or Google (Play Store). Red Grid MGRS never sees your payment details and receives no personal data from these transactions.

You can verify the zero-network claim by reviewing the source code or monitoring network traffic while using the app.

Permissions

Permission	Purpose	Scope
Location (While Using App)	Display MGRS coordinates	Foreground only — never background

No other permissions are requested.

Third Parties

Red Grid MGRS contains no third-party SDKs that collect data. It is built on the Expo runtime framework. In-app purchases use native Apple StoreKit and Google Play Billing APIs — no third-party purchase SDK is included.

Children

This app does not knowingly collect any data from anyone, including children.

Changes

Any changes to this policy will be reflected in the project repository with an updated date.

Contact

For questions: redgridtactical@gmail.com