Snapseed compare (Android)

With over 600 effects on board, Pixlr Express is one of the most powerful Android apps in its category. Despite its minor flaws, it should be your go-to mobile photo editor.

Even though it's missing a couple of nifty customization tools, Photo Grid's simple interface and outstanding menu of pre-designed grids make it the best collage app on the market.

If you're looking for something beyond simple photo retouching and filtering for your late-model phone, Photoshop Touch hits the mark, but look at user reviews before you leap.

If you're looking for a bookmarking tool that syncs across devices, then look no further. Better than Instapaper and other competitors, Pocket is the app to beat in the category.