There isn’t all that much actual first-party code in these apps, but if they made a “Hello World” but kept the same third party library deps, they’d be starting at 300MB, and once they add all the visual assets that’s another 200MB… I have a ton of apps on my phone that are absurdly large. Like Gmail is 706MB. The Gmail app for iPhone could not fit on a CD-ROM. A plain mail client. Compared to that, Facebook at 461MB is looking quite slim.

Overcast is 37MB.