Building a mobile app with JavaScript in 2019, which stack to choose?

I mainly work as a Node.js freelance dev. and for a client, I have to build a small mobile app (4 screens, very basic features: HTTP requests for login and signup, and just fetch and display data). The app might get updated with more features in the future

I don't know which tool to use for this, the 2 contenders are:

- React native: Not sure how mature it is, but there is a learning curve for sure, as I don't know react really well

- Cordova + Onsen UI: Cordova is pretty mature, but the app will be a webapp mimicking a native app, could feel awful to use

Do you have any opinion on those tools? Do you have any recommandation?