Forum: Buttons easier than sliding when your hands are on the table: Photo viewer has previous/next buttons. Simply tap the buttons to change photos. There is also a 'Delete' button, which just needs tap&confirm to delete. Double-tap to zoom in to the max and the panning window is opened automatically.
You can download the installation package of AndCamera/Photo Editor/Vector Graphics Editor 3.18 free of charge and check out users' reviews on Droid Informer. The app runs on Android 4.1 and above. This download is completely safe. Edward's Studio is the developer of this application that can be found in the Art & Design category.