This pad is really good for this money, decent quality and compatible with most systems. Definitely good for Android, PC and Mac, I also believe it works with some IOS games but have not tested
In particular it is excellent for Android TV Boxes, this is because the switch at the bottom instantly changes it between mouse mode and a proper game pad mode making navigation easy even in touchscreen designed apps.
Haven't received mine yet, but if it is like the larger version I got with my MOJO then it should also come with the clip to mount your phone for top quality emulation gaming on the go.
Normally costs over £30 which makes you look at the Chinese options from the likes of Gearbest, at £12.50 though it is far better than anything else I have used at that price point AND delivered quick from a UK retailer with a proper warranty.