About & Pics


Coordinate Master is one of the most powerful map coordinate converters available. It uses the PROJ4 library and a lookup file containing projection and datum parameters to allow conversion between more than 1700 coordinate systems from around the world.

The app can use either manually entered coordinates or your current GPS location.

 $0.99 in iOS App Store


Coordinate Master screenshot 1Coordinate Master screenshot 2

Version History

Launched Jan 03, 2017 (about 2 years ago).

Releasing new versions every about 1 month, on average.

Jul 30
Version 1.6

Added German DHDN coordinate systems.

Jun 12
Version 1.5

When "British National Grid" is selected as the to or from coordinate system, show a grid ref button to display the OS grid ref.

Apr 20
Version 1.4

Added support for new Australian GDA 2020 datum.

Mar 22
Version 1.3

Better landscape mode layout. Bug fixes.

Jan 25
Version 1.2

Targeted iOS 9 (instead of iOS 10) so the app is available on more devices. Also made the coordinate chooser page scrollable.

Jan 03
Version 1.1

Previous 3 versions


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