Check out XMODGAMES. I didnt use it on iOS, but I read it's on Cydia. I have mine on Android. Both require you to be rooted or jailbroken.
You get Sandbox Attack and Keep Active, and some other things. But those two I listed are what I see seem to work.
You can get that for CoC, and Boom Beach. Very helpful on BB, because its way of Attacking/Visiting.
Here's the link to their site:
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