PowerPhotos lets you organize your images in the Photos app across multiple photo libraries, rather than storing them all in one giant library. You can easily switch between libraries or simply browse photos in your library directly from PowerPhotos, without having to open each library. PowerPhotos also supports searching across all your libraries to help you find specific photos. If you use iCloud Photo Libraries to sync photos across other devices, splitting your libraries can help you save on iCloud storage costs. Use one library to maintain a smaller collection that can be synced with iCloud, while storing the bulk of your photos in separate libraries to avoid taking up iCloud space. PowerPhotos can analyze your libraries for duplicate photos, displaying them side by side and allowing you to get rid of unnecessary copies of photos you no longer need.