It was originally written for Harmattan. Check here: http://forum.meego.com/showthread.php?p=26839

I just didn't get much feedback and then decided to port it to N900 as N9 wasn't available at that time.

I'll start using my N9 soon which means that I'll port it again to Harmattan. The only problem is there's noting like maemo extras which helps to rapidly develop the app.