This can be used to rotate the image for an interesting effect, or more commonly to correct the image if it is at a slight angle.
If your photo is too bright or dark, you can adjust the brightness in order to get a well-balanced image.
You can take photos within the app. This allows you to do everything from capturing the image to editing all within one app, instead of having to import an image taken with another camera app.
Saturation refers to the intensity of colors. It is measured on a scale ranging from 0% (black and white) to 100% (pure colors) at a constant level of brightness. Images with high levels of saturation have vivid colors, while unsaturated images appear greyish.
5.Focus and expose separately
When taking a photo within the app, you can touch in two different areas to set the exposure and the focus separately. This is more advanced over most camera apps which normally only allow you to choose one area to both focus on and set the exposure of the image.
With a self-timer you can set an amount of time to pass before the picture is taken. This allows you to be in the picture yourself and is great for taking photos with friends.