David Lieb, CEO and cofounder of the popular iOS app, Bump, recently posted some data on iOS 4. According to Lieb’s data, 90 percent of iOS devices are currently running some version of iOS 4.
Here’s a breakdown of Liebs results:
Binned by major rev:
4.X: 89.73 %
3.X: 10.25 %
2.X: 0.02 %Individual minor revs:
4.2.1: 52.89 %
4.1: 27.50 %
3.1.3: 6.43 %
4.0.2: 3.36 %
4.0.1: 2.95 %
4.0: 2.94 %
3.1.2: 2.52 %
3.2.2: 0.49 %
3.0: 0.22 %
3.1: 0.21 %
3.0.1: 0.10 %
3.2: 0.10 %
3.1.1: 0.10 %
4.2: 0.09 %
3.2.1: 0.07 %
2.2.1: 0.02 %
2.2: 0.00 %
As you can see, most importantly, around 50 percent of iOS owners are running the latest version of iOS 4: iOS 4.2.1. When you compare this with Android’s ‘Froyo’, which had a mere 43.4 percent take up, Apple’s iOS is doing remarkably well.


