First prize for update frequency goes to Linux distros -- it is quite rare a day goes by without related updates.
Enabling auto update seems like the most logical general advice. It seems iOS & Android apps get roughly the same volume of app updates with spikes in activity around their respective new OS releases. iOS gets more frequent OS updates.
It somehow satisfies my sort of OCD to be on the latest versions with in general improved security, bug fixes and new features, but for me at least a small part of using these devices is the hobby of exploring new tech.