Filters allow you to apply effects to your image with one touch, usually with a range of effects such as retro films or sketches.
The app offers more frame styles to add around the border of your image.
You can add captions and titles to your photos.
The app offers more crop sizes (such as 4:3, 1:1, 4:5), giving you more versatility when editing your images.
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.
There are more types of font available to use. The additional types and styles allow you to be more creative and get the look you desire.