How to reduce apk size?

Unity2D is a good solution to build 2D game.
But the size of apk is so larger than other 2D engine like cocos2d.
I build a apk which size is 20.5MB and have no content.
Certainly, I want to support both arm and x86.
Any suggestion?

 

You wont be able to reduce the size, that's the smallest you're going to get from Unity.

IMO, there are very few end users who will care about the 20MB additional weight.

If you're supporting arm and x86, Google play will let you upload individual apk's for each platform so you can keep a bit of weight down.

 

1. Use small size textures/images.
2. If you have audio. Convert songs to ogg.
3. Remove useless assets, models, script etc

A lot of solutions. The best advices to optimalize your app.

https://divillysausages.com/2016/01/21/performance-tips-for-unity-2d-mobile/

 

It will reduce ~10 mb's of size

 

Thanks all