[iPhone God App] It was found using the Effect Touch actually

The best app for selectively applying all kind of different effects to your photos. Small touch-ups or a creative, artistic work, this app has it all

- Add the selected effect anywhere by "painting" it with your finger, or remove it just as easily.

- Effects can be fine-tuned with lots of adjustable parameters

- Changeable brush size, smoothness and opacity gives you complete control over the modifications

- Content-sensitive brush settings to simplify selecting regions

- All effect are processed at original resolution, (upt to 12 megapixels) keeping your picture just as sharp as it was before

- One-step short-cuts to apply the effect to the entire picture, or to parts of it by gradient

- Cropping, rotating, downscaling pictures also possible, so that you never need an other app.

The available effects are:
- brightess
- contrast
- monochrome (desaturation), with selectable tint color
- blur (also horizontal or vertical)
- inverted (you can select or deselect color components)
- hue and saturation adjustment
- posterize
- pixelate
- solid color (basically the classic finger painting)
- solarize
- pencil
- median
- glowing edges
- burned BW
- sharpen
- channel mixer
- half-tone
- patches

...all of them with adjustable parameters.