If you’re anything like me, then you might use particular device settings in certain apps to get the most out of using said apps. For example, perhaps you use maximum brightness in YouTube and a lower brightness in Safari; alternatively you might use Rotation Lock in Safari, but not in YouTube.
Assuming the aforementioned behavior describes you in any capacity, you might want to turn your attention to a newly released jailbreak tweak called Appaze 2 by iOS developer AnthoPak. This tweak lets you configure system settings on a per-app basis to make using those apps as comfortable as possible.