S Photo Editor is a photo-editing app that comes loaded with features. The main menu has options to pick the effects and filters you want to add to your images, or put together a collage of several pics, or even make a PIP (a Pic in a Pic).
Among S Photo Editor's strong points is that not only does it have loads of features and possibilities, but it's also compatible with dozens of add-on sticker and filter packs. Just tap the extra pack you want to install and it'll be available in seconds.
In terms of photo editing proper, S Photo Editor is perfectly competent, with more tools than you could ask for to let you retouch your pics, change the brightness and saturation, set filters, etc. You can even use those ever more popular beautifying tools for selfies.
S Photo Editor is a good quality photo-editing app with lots of features. With it you can make a simple collage, apply a vintage-looking filter, or add fun stickers to your selfies. What more could you ask for?