Lessons learned with #reactnative
Easy to start...
Hard to finish!!!

Same as my projects.

Elaborate

please don't use hashtags, this isn't Twitter...

also they don't work

@nam17887 there was a tag a while back from a TeamLead who switched from two native (iOS/android) to RN. In his team's experience the final 20% were difficult to get right (design + navigation) and ultimately cost the team more time than developing two separate apps. It was a lot faster to knock out the first 80% though. So, easy to start, used to finish.

Mind you, this was a while ago and there have been several major version upgrade since then so it might not hold entirely true anymore.