As part of the design changes thought by the Apple company for iOS 9, those from Cupertino have also modified the design of the buttons displayed in the various alert menus visible in the operating system. In this idea, now these buttons will have much more rounded corners than in the past and the difference is big, as you can already see from the attached image.
In order to give those with iOS 8 the opportunity to benefit from this change, someone created a tweak called Cornered, he implements the change on jailbroken terminals and installs it through Cydia.
Cornered brings the new iOS 9 styled alert corners to iOS 8. A subtly larger radius gives you rounder corners and an overall better look to your UIAlertControllers. Although a small change, it's very noticeable.
This is the only change that Cornered offers, the tweak being available for download through Cydia's BigBoss repo.
