We've updated the app to use the latest Android libraries.
We've added a fretboard reference section to the app so that you can revise the notes on the fretboard.
There is also the option to be tested on Whole Notes only (no sharps or flats).
We've also fixed an issue some users were having with the settings not setting correctly, and where strings weren't displaying correctly in left handed mode.
If you have any feedback or ideas for the app then please let us know.