Oh, I'm such a sucker for photography and graphic design apps! I have so many of them and keep adding more. Artleap, Photoleap, Lightleap, Motionleap, and Videoleap are awesome! I got them all as a package for a yearly fee. I like Lightroom mobile. Snapseed is a gem too! Also, you might like iColorama, Superimpose X, and Distressed FX. Looking forward to reading your articles on new apps and how to get the most out of the ones already out there. :-)