Combine up to nine images in a single photo collage, choosing from 179 layouts. Nearly everything about your collage is customizable, from border width to background color and texture. You can also opt for a more playful image with rounded borders, choose from 14 original photo filters, or manually adjust for brightness, contrast, hue and color saturation. Once you're satisfied, upload your image directly to Instagram, Facebook, Tumblr or Twitter.
Available for: iOS and Android
Price: $0.99
Edit your images with a unique set of 56 light filters and 66 textures, plus 75 adjustable frames and vintage wallpapers. Afterlight also offers tools for cropping, rotating and straightening images.
Available for: iOS
Price: $0.99
Sometimes a photo's composition is better served in its original rectangular dimensions. Unfortunately, Instagram's cropping tool doesn't allow for this. Squareready adds a white or colored background so you can upload your uncropped rectangular images directly to Instagram, Facebook and Twitter.
Available for: iOS
Price: Free
Whitagram is another handy app for preserving the dimensions of a portrait or landscape photograph. It also links out to Aviary and Camera+ so that you can shoot better-looking images and apply filters and stickers before uploading to Instagram.
Available for: iOS
Price: Free
PicStitch offers 232 layouts for photo collages, as well as original filters and editing tools that let you rotate, flip and zoom.
Available for: iOS
Price: Free
Create a photo collage of up to nine images or videos with PicFram. You can chose from 73 frames and shapes, such as hearts, circles and hexagons. Frames and borders are adjustable for thickness, roundness, color and pattern, plus you can manually add lighting effects and shadows for extra texture. The app allows for photo and video sharing via Instagram, Facebook, Twitter, Tumblr and more.
Available for: iOS, Android and BlackBerry
Price: $0.99
Instagram lets users capture, edit and share gorgeous images with a few swipes of the finger. But even the super popular app has its limitations.
Apps like Diptic, Afterlight and Squareready can amp up the creativity of your Instagram shots by combining photos into collages, cropping them into appealing shapes like triangles, hearts and crosses, or simply preserving an image's original dimensions. Many of them also pack additional features such as custom filters, border colors and patterns.
See also: 7 Photo Editing Apps to Use With Instagram
Check out our gallery of six apps that will give your photos a visual boost. Need a quick Instagram refresher? Take a look at our Beginner's Guide to Instagram.
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Mashable composite. Image: Flickr, Ted Court.