There is currently no way to flip or mirror an image, but this is a great suggestion and we will keep it on the table for future releases. Thanks for the feedback, and sorry for the frustration!
Developer, Photoshop Mix
I need a mirroring / tiling / tesselation option in PhotoShop. Or a definable action with current PS. Big files eg 500 Mb for multiple "kaleidoscopes".
Saw this (too long and manual CS4) method: http://www.photoshopessentials.com/photo-effects/flip-mirror/
Is there an adobe app for android that lets you flip horizontal?