I still love my self-hosted WordPress instance. I wanted, for so long, to not use WordPress (for stupid reasons).
I keep a minimal set of plugins activated and my blog just works. It allows me to focus on content instead of trying to do a bunch of "dev work" on it.
I did a prototype app with RubyMotion a couple of years back.
The iOS gems made getting an app out the door easy if you were already a Ruby developer. Android, not so much. The support for Android was still fresh. The APIs to interact with Android were there, but not very many gems for Android + RubyMotion at the time. However, there hasn't seemed to be much progress with RubyMotion + Android since then.
React Native was a good alternative and appeared to pick up more steam. Likely because of the rise of React. Since this targeted iOS and Android better, it was more exciting to put effort there.
As a Ruby developer, I'm excited to see what's to come! I'd love to give RubyMotion another chance.