Image sharpening tools emphasize the edges within an image. This can be applied to a blurred image to make it appear sharper and more detailed.
Tilt shift is a technique which can be used to achieve the “diorama” effect, whereby you can make normal images look as if they were taken of small models. It works by applying a blur to parts of the image which simulates a shallower depth of field, even on objects far away.
You can add captions and titles to your photos.
Using the brush tool you can paint across the image, or use it to make small adjustments to touch up the image.
When taking a picture with the app, you can preview your next photo with the filter already applied. This means you can choose a filter that compliments the scene before you capture the image, rather than applying it later.
You can build up an image using layers, adjusting the settings for each one independently. This is a sign of a more powerful image-editing app, and allows you to create more complex images.