May not be as popular anymore but Lrn app was built with RN and was featured by Apple on the home page in 110+ countries. Still has a sticky spot in the education category in 10 countries and has about half a million users. Not maintained anymore tho.
iTunes: https://itunes.apple.com/us/app/lrn-learn-to-code-in-html/id...
Another app that comes to my mind is from vouge. It was also featured by Apple on the home page.