Both apps are native. I wrote the first app in Android, and then once I got that hammered out the way I liked, then switched to ios. On IOS it's written in Swift 3.
Wow it's rare and also great you know how to write for both platforms. I'm focusing more on React Native because I don't know any Java...
Thanks. React Native looks like a great platform. I haven't really done much with that yet, but it looks really interesting. Unfortunately, android and IOS both have pretty big learning curves, but I think knowing both is pretty helpful. I think you can make better apps when you write it natively.