This is a great app but I wouldn't want to be stuck with a CrApple device again just to use it (I fell for the iPhone1).
The app could just as easily been created for the N900 rather than the iGroan, but the large market share of AnFroid and CrApple make the N900 unprofitable for software companies (QT compatibility could improve this a bit). Why pay a developer to port to Maemo if the product won't sell well enough to cover the pay for that developer?
You know, stating the obvious!