The guy who made the app, Arngeir, hasn't been online for months. As such, the app hasn't gotten the updates and bug fixes that it needed for a while.

That's a shame. Its how I came to know about this site and i imagine would serve as good publicity. 

I'm going to *attempt* to develop one, if paarthurnax let's me

I know it needs an update. There are a lot of words that are in thuum.org that arent in the app.  Also, there used to be an update button in the top left hand side of the main screen which has seemed to have vanoshed. Asode from that the app seems to smoothly enough. Although when i posted this question, the app wasnt working at all.