Rue1

How to download im just keep getting zips files not files i can install

Hey when I was reading somewhere it said you can swap from devices but then on another post it said it’s a one time purchase for 1 device. I thought I would be able to use it on multiple devices so I got it on my iPhone. I would rather have it on my iPad. Anything I can do to switch iosgods app++ it to my iPad? I just recently purchased it. If I would known it was for one device I would've used my ipad