A number of you called out Pixlr Express as another great Instagram alternative for Android, noting its editing features are more powerful than its more popular cousin. It's not new, but it does have some notable tools under the hood: one-touch red eye correction, teeth whitening, focal blur, noise removal and sharpening are available, as well as the expected crop/rotate/resize options. You can tap the "auto fix" button and the app will take care of your shot for you, adjusting for low-light levels or oversaturated colours. You can always revert its changes, or hop in and adjust them manually feature-by-feature.
If you must add filters and borders to your photos, Pixlr Express can help you there. If you'd rather do more granular adjustments and editing, the app supports that as well: you can zoom in on your photos and use the app's brush tool to apply colours and tweaks to specific areas of a photo. It's free, and available now for iOS and Android devices.
Pixlr Express (Free) [Google Play
Pixlr Express (Free) [iTunes App Store]