Looks promising, but the Android app is closed source. Hard pass until it's source code is released under a FOSS license and buildable+usable without analytics nor prioprietary libraries.
It seems that they plan on open sourcing the app.
unti then. /hardpass
NetBird is one of these p2p private networking solutions that is truly open-source. Actually, I haven't seen any comparable yet.
We haven't yet published the Android code simply because we have coding standards to meet before we open the code to the public. This is mainly about the code structure and tests. We are working on it.
We are a tiny team of engineers with a vision to make private networking simple and secure, which is challenging. Therefore, we should prioritize some things over others. But we are getting there! With your support :)