ViewScanner

ViewScanner lets you quickly and easily identify what's around you when you are out and about in the country. No Internet connection is needed. Just point, click and scan. An invaluable tool for hill walkers, ramblers or just anyone interested in what they can see in the distance. 
The App will highlight the names and details of over 300,000 Ordnance Survey locations across England, Scotland and Wales (please note that Northern Ireland is NOT covered by the App currently). 
The App overlays the points onto a photo of what you can see, allowing you to easily identify hills, mountains, lakes, lochs, towns, villages, even schools, ports, waterfalls and forests. You no longer have to think 'what's that hill or town in the distance', just point, click and we'll let you know. You can filter the points of interest to the type of feature you are interested in, such as hills or forests. 
You can also select from a list of visible points and ask the App to show them to you. All images can be saved and recalled later, along with the details of all the locations that are visible. If you have an internet connection you can open a map view of any highlighted point.