Favorite IPhone/smartphone photography apps

As much as I love my dslr or mirrorless cameras, the one camera I always have with me is my iPhone. Nowadays with the newer model iPhones and smartphones you can even print bigger, higher quality images than you could before. There is also the fun of sharing images on Instagram and other social media. Here are my latest favorite iPhone/smartphone apps for processing images:
Snapseed - for basic editing
Formulas - for textures 
Brushstroke - for turning your images into paintings
Rollworld - a fun app for tiny planet photos or distorting images (another good one I have heard about it Tiny Planets)
Mextures - for textures


A couple fun ones to use instead of using your native camera:
Hipstamatic - has lots of fun effects
Slow shutter - great for blurring subjects


I will follow up with more information on how I use each of these apps in later posts.