If you need to build an iOS and Android app and you don't need to really push the envelope on design then React Native is a godsend. It's not the right solution

If you need to build an iOS and Android app and you don't need to really push the envelope on design then React Native is a godsend. It's not the right solution for everything but for that vast array of apps that are mostly just list/tableviews talking to a REST backend it's a massive timesaver. I've been doing native iOS work for six years now and I'd still recommend RN over straight native for a lot of projects.