How do you optimize your React Native app?

I'm completing a production-level app on which I worked around 7 months, and I'm finally seeing the light at the end of the tunnel.

Still, I wonder how can somebody optimise a React Native application, meaning making everything smaller&faster: right now I've used ImageOptim to shrink the images I'll have locally stored, and removed all console.logs() I found in my code - since I once read in a blogpost that logs slow a lot.

Is there anything else I can do?