Movavi is an exexpensive ($29,95) download for both PC and Mac. It is an improvement over iPhoto and a huge improvement over Photo, the new Mac editor.
My favorite feature is the ability to remove things from the photo, which you can do in Photoshop. But you can't pull a wall out or a ceiling up to help a room make more sense, which you can do in Photoshop.
While Photoshop is still the standard for professionals, Movavi is very easy to use - you don't have to go to night school for a semester to learn how to use Movavi. It's elegantly simple. Even I can do it.