Swifty Filter-It is an open source video filtering app designed for maximum creative possibilities. It has over 50 filters including:

Brightness, Contrast, Exposure, Gamma, Highlight / Shadow adjustments
Hue, Saturation, False Color Adjustments
Box, Gaussian, Motion and Zoom Blur Filter
A Variety of Distortion Filters
Posterizing, Toon, and CGA Color Space Filters
Machine Vision Filters
Photo Filters
Emboss, Erosion, Dilation Filters
HalfTone, Cross Hatch Filters
Sharpen Filter
Tilt Shift Filter
Vignette Filter
RGB Filter

and more...

Not only can you add single filters but you can add whole stacks of filters. If you like, you can rearrange your filter stack, or delete a filter when needed.

If you touch the preview it will play the unfiltered version or if you've processed your video: it will preview the processed version. Swipe your finger across the preview area from left to right to see different frames. Your filter settings are immediately applied.

The logic is based on Swift 2.0, so its very speedy. I used GPUImage by Brad Larson for the filter effects.

Best part is that the app is completely free!

If you want a new feature for this app drop me a line at [email protected]!