Use APKPure App
Get Grid Reference OS old version APK for Android
Displays the UK Ordnance Survey (OS) grid reference for your current location.
Displays the grid reference for your current location. Currently supports UK Ordnance Survey (OS) grid references to 4, 6, 8 or 10 figures.
The app also displays your WGS84 Latitude and Longitude values and whether your current position is within the correct range for UK grid references.
GB Grid Reference Values are used on Ordnance Survey Maps in Great Britain (UK Mainland).