GridPoint GB vs Grid Ref UK and Ireland

If you have a paper Ordnance Survey (OS) map, GridPoint GB makes it easy to locate yourself — even when you've got no mobile reception. The app uses your iPhone's GPS and compass to provide your current grid reference and heading, and illustrates how to use this to locate yourself on the map. Coordinate conversions are implemented via OS's OSTN02, accurate to within 1m. The app also: * Includes an Apple Watch app and associated complication * Reports full numerical easting and northing, tetrad, raw latitude/longitude, a nearby postcode, and various heading parameters * Has a sharing facility so you can share, copy or store your location * Calculates next sunset and sunrise times * Can emit a distress signal, just in case All features are free to use — the in-app purchase is simply a tip you can give the developer to show appreciation. For details and instructions, please see http://mackerron.com/gridpointgb/ Please note: this app works ONLY in Britain (i.e. England, Scotland or Wales). It does not operate in other parts of the UK or British Isles and cannot provide coordinates in Northern Ireland or the Republic of Ireland, since a different coordinate system is used.

Pinpoint your current map reference location anywhere in the United Kingdom or Ireland. App Provides: GB Grid Ref, Irish Grid Ref, OSGB36 and WGS84 Latitude and Longitude values. GB Grid Reference Values are used on Ordnance Survey (OS) Maps in Great Britain (Mainland). Irish National Grid Values are used on Ordnance Survey Ireland and Ordnance Survey Northern Ireland (OSNI) Maps. Grid References will be given to 3 Digits. The Accuracy of Readings, as indicated by your device, will also be shown. Tweet to Share your Location via Twitter! Grid Ref UK and Ireland - Your Grid Reference App! App will operate internationally, but the "Grid Reference" information is intended for use in the British Isles (UK and Republic of Ireland). App includes a graphical guide to the GB and Irish National Grids. Ideally suited for use by walkers, hikers and outdoor sports enthusiasts. It is recommended that you should always carry a map and physical compass when on outdoor pursuits. For best results, use in a flat position, not an upright position. Much like a traditional compass. Use in an open space, where possible, away from trees, buildings and sources of interference. The screen can, optionally, be set to stay on, for continued on-screen display of Grid Reference information. Compatible with handsets that feature GPS hardware. You may have to grant the app permission to use this information. -- Ad Supported. Users can opt to Get 10 Figure Grid References and Remove All Ads from the App, via an In-App Purchase.