Hillnav GPS is a simple Hill or Mountain GPS application. It is intended to display the users current location, elevation and speed in either the UK Ordnance Survey format (UK Grid) or the Irish Ordnance survey format (Irish Grid).

The app allows the current location to be stored as a way point, and it can display a distance and compass bearing from the current location back to the way point. The current location can also be easily shared via email, SMS, Facebook or Twitter.

The app does not require a cellular signal, and does not contain any maps.

It is ideally suited to hill walkers in the UK and Ireland who prefer to use their existing paper maps and compass, but would like the reassurance of a GPS that can pin point their location on the map.