Bead & Button magazine was the first jewelry magazine I purchased, back when it first debuted. I own almost every copy and always dreamed of having digital versions that were more portable, safe from dust and dampness and easier to magnify.
That being said, there are a couple different ways to have a digital copy. One is Amazon's method, which is like a PDF, and the other is an App-based type, which you can use on your iPad (sorry, but I don't know if this is available for Android devices).
My preferred format is Amazon's standard PDF type. The main reason being that I like to turn my iPad in portrait orientation and read my books and magazine in a larger format, just like the print version. The Amazon version will resize itself automatically and there is actually much less need to magnify stuff.
The Bead & Button App won't allow this. You read in landscape mode only, and while you can magnify, in certain areas, the magnification area is constrained, which makes the experience somewhat disappointing, Also, some content requires a left-to-right swipe, while other content has a scroll icon and wants you to move up and down through it. It's awkward in that way, because the experience is not consistent across all the pages.
You can, however, get a free sample with the app and see if its more to your liking. I'm sticking with the Amazon version, however.