Second that, MobX has been a total game changer for me. Used redux and really like the philosophy of it, but overall feel mobx is much easier to use while accomplishing just as much, and the simplicity and lack of boilerplate actually makes reasoning about state, testing, etc much easier than redux. I disagree about large apps (switched to mobx on a large app now), but I can roughly see what you are saying. Still, I think MobX is great on large apps