GPS OS Grid Reference สำหรับ iOS

GPS OS provides a fast and accurate way to locate your position on an Ordnance Survey map, both in Great Britain and Ireland.
• No phone signal required – works in the most remote locations.
• OSTN15 transform data for high conversion accuracy (better than 1m).
• 6, 8 and 10 figure grid references.
• A large, clear, high contrast display ensures you can easily read your position in any light conditions.
• Optimises the frequency of position updates depending on battery charge and speed of travel to make sure you can always make calls at the end of the day.
• Share your location with other people.
• No adverts.

Includes OSTN15 transform data licensed with permission.
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