A jailbreak.

Howto:

Clean reboot the device, wait for a couple of minutes, start extra_recipe, wait for 5 seconds or so, then hit "go". If it says "failed, reboot" you should really reboot. Re-trying the same app will most likely encounter a kernel panic somewhere down the road.

Support:

Device	Version
iPhone 7/+	iOS 10.0.1 -> iOS 10.1.1
iPhone 6S/+ (TSMC)	iOS 10.2
iPhone SE (TSMC)	iOS 10.2
iPhone 6/+	iOS 10.1.1 & 10.2
iPhone 5S	iOS 10.0.2, 10.1.1 & 10.2
iPad Air 2	iOS 10.2
iPad Pro 9.7	iOS 10.2
iPad Pro 12.9	iOS 10.2
iPad Air	iOS 10.2
iPad Mini 2	iOS 10.0.2 & 10.2
iPad Mini 3	iOS 10.2
iPad Mini 4	iOS 10.2
iPod Touch 6th Gen.	iOS 10.2

Credits:

• Ian Beer for the amazingly simple, yet awesome, kernel exploit
• @qwertyoruiop for the amazingly complicated, yet effective, memprot bypass