A01DL is an application that transfers images from cameras of major manufacturers such as OPC (Olympus Air) / Ricoh GR II / PENTAX SLR / THETA / SONY / FUJI / Canon / NIKON / Olympus to smartphones via Wifi. Camera images can be displayed in a list (although there are restrictions on some manufacturers' cameras) by filtering on the shooting date and the folder where the images are stored. You can select the necessary files from them and transfer them all at once. You can also transfer the image size and RAW file to be transferred.