Comparison of iOS and Android on the probability of crash reports

Statistics of crash reports from different mobile devices shows that the percentage of successful launches of applications under Android is significantly higher than under iOS. These are aggregated statistics collected by Crittercism, which monitors the performance of mobile applications. They release the SDK and the real-time crash reporting library, which each developer can embed in their mobile application and get statistics on crashes.

PS On the diagram, the normalized data , which eliminated the redundancy of iOS devices in the sample. Thus, the OS share in the market does not affect these statistics in any way, and only the probability of a failure occurrence is taken into account.

Required disclaimer: Crittercism is a start-up for which it is important to make a name for yourself and get free advertising by mentioning it in the media, and among its investors is Google Ventures. On the other hand, the company has no reason to undermine its main software business and risk reputation for cheap PR.
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So, to the numbers. The diagram above shows normalized crash report statistics for two weeks from December 1 to December 15, which contains figures for 23 iOS versions and 33 Android versions. In November-December 2011, Crittercism processed more than 214 million application launches that use their monitoring service (162 million launches on iOS and 52 million on Android). To present this statistic, data was normalized, that is, for each device, the ratio of the number of drops to the number of successful launches was calculated, so that the relative popularity of the operating system does not affect the system reliability statistics.

The following is a separate picture on iOS and Android, which indicates more OS versions that were hidden on the “others” tab in the previous diagram.





As you can see, the largest proportion of failures is in iOS 5.01 (28.64% in the normalized sample). This is understandable, because iOS 5 is a relatively new operating system. However, a lot of crash reports come from relatively old operating systems.

When you install an application on different devices, there is a much greater chance that a crash will occur on the iPhone.



Note that the loss of iOS before Android on the stability of work is not some new phenomenon. On the contrary, in recent years, iOS and Android are almost equal in reliability, but before the ratio was much worse.



For example, on December 1-15, 2011 on Android devices, the launch of the application failed in 2.97% of cases, and for iOS, this figure is 3.66%. In early November, these figures were 0.15% and 0.51%, respectively. Apparently, such a leap of insecurity is associated with the release of new versions of both OSs. This assumption is confirmed by trends in Google search .