PhotoPro looks very good, at first -- it's slick, fast, and seems intuitive -- but there are issues that pop up as you use it, from a small interface to a lack of direction or tutorials. These are small issues, but when you consider how good it looks and how fast it operates, this could have been a fantastic photo editing and sharing app for the iOS platform had it been polished just a bit more.
Still, even with those small issues, we were very impressed with PhotoPro. The developers were able to create a clean, stripped-down photo editing and sharing app with all of the basic tools you need -- camera, library, editor, and background changes -- while only using a small fraction of the screen's space. This can be a problem for those who struggle with smaller buttons, but for those that don't mind a minimized interface, it clears up a lot of screen real estate for viewing and moving photos. The actual collage creation process isn't very robust either, but because it is so clean and because you can change backgrounds on the fly, it works well for combining images before uploading to Instagram.
If you are looking for a streamlined, easy-to-use, and free photo snapping and collage creation app without the gaudy frames and stickers that other apps have, and with no ads to clutter the interface, PhotoPro is a great app. It doesn't do a lot, and it would benefit from some upfront user guidance -- but once you get accustomed to its controls, this is a solid app.