Snapseed is a complete and professional photo-editing software application developed by Google that will upgrade your regular photos, with lots of filters and special effects. It has 29 tools like healing, brush, structure, HDR, etc.
Adobe Photoshop Express is a fast, powerful and easy way to edit photos on your Android, Windows, and iOS devices. You can customize your pictures, create collages and share them on your social networks.
Aviary is a photo editing app that gives users options to enhance, accessorize and apply effects in their photos and share them on social media. It is developed by Aviary Inc. and is currently available for Android devices only.
Enlight is a photo editor app for iOS devices. It lets you create your own presets, mix two photos to create montages, add frames and much more. You will also be able to share your creations with all your friends from every social network.
Perspective Correct is an app which is the easiest way to fix perspective distortion of photos with just a simple swipe you can frame and fix the slant or angle of photos. The output can be shared with other social networking apps.
Fotor is a photo editing app that features over 300 photo effects. This professional editing tool is also ideal for creating collages, doing touch-ups, adding filters and stylish frames to images, photo stitching, and so on.