Here's the usage numbers by version for the last month on my Planet Minesweeper game: http://imgur.com/Mu7Tp http://imgur.com/Mu7Tp It's a universal app, so

Here's the usage numbers by version for the last month on my Planet Minesweeper game: http://imgur.com/Mu7Tp http://imgur.com/Mu7Tp It's a universal app, so this covers iPhone and iPad. Over 80% of users are on 5.0 or above. My take on this is that if there is any iOS 5 feature that would make your life easier and save you time, or make your user's experience better, then go for it and don't worry about backwards compatibility. But if there's nothing specific drawing you to iOS5 go ahead and support old versions, it's not that much extra work to test and support older versions.