09-09-2013 07:48 AM
09-09-2013 11:43 AM
We've got a good blog post on in-app icons
For actually application icons, I don't know of any resources really. This is usually something the developer/designer comes up with on their own since it's unique to the application.
09-13-2013 05:56 PM
I would also suggest doing it at 480px * 480px at least and scaling down, or better yet, do it in a vector format using illustrator or Inkscape. That way you can use it elsewhere without running into scaling problems. BB World requires a 480px square image for your app icon, but recently we asked devs for vector based images for a BFB thing at JAM Asia. I had to redo my icon for that because my current one was only ever 114px square and a regular png.