More than open-source, I would say it's also due to the fact that on Android there's no homemade apps with private apis like on iOS. Apple's security model cle

More than open-source, I would say it's also due to the fact that on Android there's no homemade apps with private apis like on iOS. Apple's security model clearly excludes their own apps and that shows on the issues publicly released. Secondly, on Android, very few system components are actually tied to the OS version, and it's getting thinner after every version. On iOS it's the norm.