4. Pixlr (Android, iOS)
Pixlr is one of the best photo editing apps for the casual photographer who wants to do just a bit of fine-tuning, perhaps add some neat effects and then share on whatever social networks are on their phone. The intuitive interface is easy to master, so you can get right into the fun of playing with your pictures.
Pixlr has a nice variety of easy-to-use photo adjustment tools, without overwhelming you with choices. This includes brushes to apply selective edits (such as darken or undo). The libraries of special effect filters, overlays, and borders are fun and generally attractive. The cartoonish stickers are varied and fun. Quickly create collages, using preset layouts or designed templates that allow you to shuffle your photos, as well as zoom and move them within the placeholders.
The premium version ($1.99/month or $11.99/year) turns off the ads and provides lots more content (stickers, overlays, borders, and fonts). While serious photographers might find Pixlr’s library of editing tools too shallow, casual users will enjoy the app’s easy creativity.