I created it for the community because there's no such list anywhere.
A friend asked me what iOS built-in apps there were and how they have changed in design lately.
Unfortunately I could only help the friend a little. I added all built-in apps from each iPhone OS and iOS version.
But, what the apps all looked like back then, I couldn't manage. Don't have all iPhone OS or iOS version.
Maybe it motivates others to improve the list or just keep the app list up to date for the next major iOS.
Originally it was just a project for the friend, but I found it more productive for the community to share.
One thing I can tell you it was very exciting how everything has changed so much. From Steve Jobs preferred skeuomorphic app design to flat app design. What's next?