Over 10 MILLION people LOVE PicCollage! Your friends are using PicCollage because it's fast, fun and easy. It's the best way to create pretty collages of your friends and favorite things using stickers, text, web images and freeform cut-outs! Import photos from your photo library, your Facebook albums (and your friends' albums too), or use photos from the web to create a collage. There are also lots of fun backgrounds and stickers for you to choose from! When you're done, share your collages on Facebook, Twitter, or email. In addition, you can print and ship it as a physical postcard if you prefer a more personal touch.Source 

80 million users love Instagram! It's a free, fun, and simple way to make and share gorgeous photos on your iPhone. Pick from one of several gorgeous filtered effects or tilt-shift blur to breathe a new life into your mobile photos. Transform everyday moments into works of art you'll want to share with friends and family. Share your photos in a simple photo stream with friends to see - and follow your friends' photos with the click of a single button. Every day you open up Instagram, you'll see new photos from your closest friends, and creative people from around the world.Source 

Don’t miss one of the most talked about and popular photo apps, with over 2 million combinations to make your photos will look spectacular! It’s so easy that anybody can create stunning shots. This fun and simple darkroom app makes it easy to add an effect, overlay and border to get that retro, grunge, clean or stylish look, all in just three simple steps. And with more options than any other photo app, you will never be out of new styles.Source 

Photosynth for iOS is the panorama creation app that makes it easy and fun to capture and share interactive panoramas of the places, people, and events that are important to you. Using the latest in computer vision techniques, you can not only make a panorama from left to right, but also up and down, enabling you to capture a full “sphere”. Once you’ve created a Photosynth, you can share it as an interactive panorama experience on Facebook and Twitter (using the free Photosynth.net service) or as a simple image. You can also publish your panoramas to Bing where millions of people will see your panoramas, on Bing Maps and in Bing search results for the places you've captured. And check out the “Best of Bing Maps”, where we show off the best of what you and your fellow users create and share.Source 

Piictu is a fun and simple way to talk and play with pictures from your mobile phone! Simply snap a piic, post it and watch it come to life with picture replies. Talk and Play solely through the exchange of piics! Create photo contests, compete with friends and strangers, ask questions, or start a conversation through piics. The possibilities are endless!Source 

Adobe Photoshop Express software lets you use simple gestures to quickly edit and share photos from your mobile device. With Photoshop Express, it's easy to improve your photos. Choose from a variety of one-touch effects, or simply drag your finger across the screen to crop, rotate, or adjust color. Add artistic filters like Soft Focus or Sketch. And never fear: A copy of your original file is always saved, and you can undo and redo changes until you get just the look you want.Source 

iRetouch Free is an advanced, feature-rich photo editor for your iPhone/iPod Touch. You will benefit from having all essential retouching tools in one app. iRetouch is highly optimized to allow usage of numerous photo editing tools, all in one app. Source 

Glmps is the easiest way to share your life through video, one photo at a time. A short film captures the story behind your photos. The camera is always rolling, so when you snap a picture you also get a movie. Moments can be saved privately or shared across your favorite social networks. Follow your friends and catch a glimpse of what's happening around the world.Source 

Experience 13 free and unique filters! Decorate your photos with frames! Share photos with your favorite music! Come and join Pudding.to photo community. Meet new friends and share your awesome photos!Source