What are some alternatives?
When comparing glitchi and Photomosh, you can also consider the following products
generative.app - Transform your images into compelling algorithmic art
MVGEN - Make your own music videos with audio, gifs, and special effects
Pixus - Pixus is an AIR pixel ruler application, a handy tool for web and interface designers.
Glitchatron - Destroy your favorite photos
Glitch Wizard - Create trippy glitch photos and animated GIFs
CharMap - Unicode character viewer and keyboard for iOS