Currently in the middle of coding a reasonably big update which will enable portrait mode on all tablets (previously only available on larger tablets), and will lead the way towards the phone portrait mode. Should also make things just generally a bit nicer to use and also a bit more responsive. It will also have a fix to make the save file keep it's contents between updates. As it had the potential to break some stuff I'm considering doing a test release. Please let me know if you'd be interested in joining in.