Math Quiz - Fast as You Can!

My first React Native game: Math Quiz.

This is my second React Native app. For the second app I wanted to do something simple with minimalistic style. So I tried to make Math Quiz game, because I had only this idea.

I wanted to create something that was simple enough to play but had the ability to be extremely difficult and frustrating. The levels start off simple enough but I was sure to up the difficulty as time went on.

If you interested, here: play.google.com/store/apps/details?id=com.find.me.hs

I'm just a newbie and intend to get better. Any type of advice or comment is welcome. ?