Problems with both ipad and iPhone apps
I have experienced many problems with both new apps today - particularly apps hanging when I complete a lesson and then losing all record of it - this has happened at least five times today so I am quite fed up.
Also the ipad app has other bugs:
periodically the bottom right of the screen stops showing the scrolling tree and just shows the background
the sound turns off sometimes partway through a lesson and can only be recovered by force-quitting the app and restarting it
on one occasion when I had no sound I tapped in xx as a deliberate wrong answer to get past the question, and it was accepted as correct
on another occasion just before a crash I had an answer that was absolutely correct except for an umlaut marked as wrong