Not looking to jailbreak for tweaks but for only a specific app. I see various different jailbreak options...bregxi, Chimera... what is the difference, which is better/more secure? I have an iPhone 6s running iOS 12.3 apparently it will work with bregxi but not Chimera. If 12.3 is not compatible I can wait till available. if I don’t like it can I restore back to the latest iCloud back up? Will it still be backing up to iCloud after jailbreak? Any specific features that will or will not work after jailbreak?