How much memory can an iPhone app use?

Question

Can anyone link me to a page that describes memory allocations for iPhone apps.

I have heard that you are limited to a sandbox of ~20 megs, depending on the state of

Answer 1

I believe it's

• Memory warnings at 20MB
• Application "crashes" at 30MB

I'm fairly certain I saw this in The iPhone Developer's Cookbook: Building Applications with the iPhone SDK by Erica Sadun (amazing book, btw).

Also: Duplicate -> Maximum runtime memory available in iPhone and iPod?.