Too much of nothing
Ive had Shift sitting on my iPhone and iPad for several months--maybe over a year--now. Every time I go to it, thinking "Okay, heres a photo project thatll be fun in Shift," half an hour later Ill move on to another app wondering why I keep letting this take up space.
The basic categories of filters, colors, and textures make sense. But the presets are exaggerated, even garish. So, by the time youve dialed through all the options and permutations and done your personal adjustments, you might as well have fussed with one of the better full-featured processing apps like the perennially fresh Snapseed or newer Enlight. And, yes, there are theoretically thousands of possibilities with Shift, but if I need a quick-n-easy but adjustable filter, VSCO, Afterlight, and Camera+ are so much more useful--better UIs and aesthetic sense.
Finally, the random elements here are just too much. So, this ones coming off my iOS devices.
Music Prof about
Shift - Create Custom Filters with Textures, Gradients, and Blends