Apple Aperture and Adobe Photoshop are two examples of image editing software available, and the fact that they are used for the same purpose doesn't mean they are the same. There are some differences between them; in fact, photoshop seems to have more edges over Apple Aperture.
Both have quality features that make them stand out and unique, but photoshop has a set of comprehensive features than Apple Aperture, most crucial feature like layers. Also, some tasks can be performed automatically on photoshop, and that gives you more opportunity to complete your tasks within a short period. Although Apple Aperture has this kind of feature, it is not as effective as the one in photoshop.
Another difference is that photoshop is more expensive than the Apple Aperture. However, if you are looking for an image editing software that will organize your photos very neatly, Apple Aperture is the best choice.