Ask HN: Why do Android apps take up so much disk?

My phone warned me today that it was running low on space. After looking through my Downloads and pictures for a bit I decided to clean up apps. I don't really use many apps on my phone which is why this wasn't my go-to in the first place.

The below numbers are just app storage (I imagine binary size on disk?):

Chrome (for reference, reasonable) - 187 MB

Capital One - 91 MB

Storage - 78 MB

Digital Secure (no idea what this is) - 69 MB

Email - 66 MB

Calendar - 28 MB

Contacts - 22 MB

Clock - 21 MB

Calculator (for reference, reasonable) - 1.7 MB

So I don't work in the mobile space - can someone explain to me why these (mostly stock) apps take up so much space on disk? How come my stock Clock app is 1/9th the size of Chrome?