Spritesheets are a must these days, what with having to include so much eyecandy now that games for iOS are getting so sophisticated. Even if not for performance issues, spritesheets are great for simply keeping assets organized in a game. Add to that the easy to use AutoSD option which makes your HD or Retina Display assets as well as the non-Retina assets easy to manage, TP is by far the best tool for the job.
Whether you are a newbie or advanced developer, we highly recommend you pick it up asap. You’ll see how easy it is to manage your assets and export them. This is a tool that really makes your life a lot easier as a developer. We use it on all our own projects as well as recommend it to all our students.
Get it today at http://www.texturepacker.com