Pictize lets you organize your photos and split them up into albums in a fast and easy way. If you get into the habit of using it, you'll be able to enjoy a clean and neatly structured Camera Roll.
Your unorganized photos will be presented to you one by one. You'll be able to decide, which album to move them into. A new album can be created with a single tap.
All of the changes you make in Pictize are synced to your iPhone's Gallery app. If you use the iCloud Photo Library, those changes will also be shared with other devices connected to the same Apple ID.