User interface improvements

Fixed coordinate conversion bug.

Added an option on the main page menu to rate and review the app.

Bug fixes

Added buttons to show coordinate locations on a map. Added the ability to add and edit user projections from within the app.

Added support for affine parameters.

Automatically create a user_projections.txt file in the app's folder. This file can be edited on a computer to add custom coordinate systems.

When getting location from GPS, automatically convert to target coordinate system.

Added a preferences page to allow setting precision. Added a new page to show the details of the selected coordinate system.

Fixed bug with choosing coordinate systems on iOS 15.

Improved appearance of launch screen.

Updated user interface

Improved layout and fixed a bug with the coordinate chooser spinners.

Bug fixes

Fixed layout issues with zone and DMS tools.

Bug fixes

Added UTM zone tool.

Bug fixes and improvements.

Added button to get lat/lon from photo.

Minor changes to main page layout.

Added German DHDN coordinate systems.

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

Added support for new Australian GDA 2020 datum.

Better landscape mode layout. Bug fixes.

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