Optimizing binary app size on iPhone / iPod touch

Question

I know that a user can only download up to 20MB over 3G, and my build/Release-iphoneos is showing my app at 26MB.

I'm linking against the three20 iPhone framework.

Is this the final size that will count against the 20MB max when submitted to the App Store?

Is there anything I can do squeeze this even lower? (I'm using a bunch of PNG's converted from JPEG, so I guess I can lower the quality they're being converted at.)

Thanks.

Answer 1

Are you using some kind of sound??? if you are be careful with the format you are using,(in my case, sound is always my biggest problem refering to app size)

And yes, the binary size will be your app size in the appstore too

Answer 2

How big is the binary itself? I doubt it contributes much to overall size of the app bundle. Consider using pngcrush (here) on those PNG files. Resources are going to be the biggest place you can make a saving.