I was a big fan of Apple computers back in the day - until I actually purchased one. There are many limitations the Apple computers pose - mostly in compatibility with virtually everything that is out there. Linux based computers face the same problem. you can get it to work, but you are going to spend hours, days or even weeks trying to get what works standard on a PC. If you want Microsoft Office for example - you get a version that is two years older, and not all integration works with the OS.
Flash This article walks you through the upgrade process after opening the new version, as well as the different upgrade options based upon your purchase history. Tap In-App Purchases to bring up the Unlock OmniGraffle window, which lists the available upgrades as well as their prices. If you have not purchased a prior version of OmniGraffle for iOS, follow the remaining steps in the section titled Unlocking OmniGraffle for new users. Or, if you have purchased an earlier version of OmniGraffle for iOS, follow the remaining steps in the section titled Upgrade pricing for existing customers. Want to try out OmniGraffle 3 before buying?