What about Cycle Native?
At CycleConf last month we hacked around improving the Cycle/RN interop and solving a few of the big problems that prevented using Cycle Native for real apps, and ended up rewriting most of the Cycle Native internals. Our work is not yet fully merged to the official repo, needs a bit of cleanup before we can do that.
The work in progress is here: https://github.com/jevakallio/cycle-react-native