Is it still closed source?
I wanted to dev an android app for it, for free, weeks ago but it was impossible to get the source code.
Kinda scared me away....
Shareholders voted and passed a motion to create an official NuBits Android wallet (as in separate from the Coinomi wallet) about a week ago. My guess is that it will be done within a few weeks. You can find information about the motion and wallet
right here.
You can find the draft motion for opening sourcing
right cha, and discussion about Nu open source in general
over here.
Hope that helps!