If you just want push notifications from ZNC, I wrote a plugin called ZNC Push [1] that can interface with many popular push notification services. I personally use NMA, and have a full writeup about my setup [2]. If there's a service you use that isn't supported, I would gladly accept requests if it's something I can test on my own Android devices.

1: https://github.com/jreese/znc-push 2: http://noswap.com/articles/irc/

That was my immediate reaction, too. Though it sounds like the node.js server is doing more than your standard bouncer; ZNC support seems unlikely.

Hi, I'm the author of TapChat.

I recommend connecting the TapChat server to ZNC, this works quite well.