If rather than blending your photos you want them together but separate, you could give Pic Stich a try. It lets you easily create collages from your photos, write or doodle on them and add frames and filters.
Photoshop Touch
Photoshop should need no introduction, but with Photoshop Touch it's been optimised for phones. The app is packed full of filters and supports layers as well as tone and colour adjustments, which can be applied to either the whole image, a specific layer or just a certain area.
There are brushes and effects, the ability to add text, combine images, add drop shadows and more. It also includes free membership to Adobe Creative Cloud, giving you 2GB of storage and allowing you to easily sync your files between devices.
So you can do some basic editing on your phone when you're out, then sync it with your computer to do the heavy lifting. It's not free, but at £2.99 (around $4.50 / AU$5.99) you get a whole lot for your money.
If you'd rather stick to free apps you should check out Photo Editor Pro, which has a whole range of editing features too, such as one-tap auto enhance, crop and rotate tools, the ability to change the brightness, contrast, colour temperature and saturation, add text, sharpen and blur images and more.
Motion Shot
Capturing movement in a photo isn't always easy. Worst case scenario is obviously a blurred mess, and even if it's not it's usually hard to get a sense of the movement.
Motion Shot solves this problem by shooting a short video which can then be saved as a single image, better expressing moving objects. For example if you create an image of someone jogging they'll appear multiple times in the shot, highlighting their movement.
It gives you a certain amount of control, letting you add effects and pick which frames to include in the picture and as well as creating images Motion Shot also allows you to save the footage you capture as a short animated GIF.
If you believe that motion can't be distilled into an image you might be better off with GIF camera, which, as you probably guessed, lets you create GIF images. It's incredibly simple to use: just hit record when you're ready and it will film for a few seconds, then you can either save the results as they are or remove frames, reverse it, or adjust the frame rate first.
