How do I backup my game progress?

[Sabaki]

Hey everybody 😉

I have completed both Chaos Rings & PvZ 100% but as I only have an 8gig iPhone 4, I need to delete both in order to play Infinite Blade 1 & 2.

Thing is that I don't want to lose my progress on either game and I would like to know if it's possible to backup the game with progress intact?

I'm a recent convert from Nokia and I have only ever worked on Windows based pcs so I am not aufait with the Mac environment.

Please assist if you can, it would really be appreciated 😁

Thanks everybody