Company D&M Holdings created these great apps:
Denon Remote App, Marantz Remote App, DENON DJ engine, Denon Audio, Denon Club, Denon Travel, Denon Sport, Denon Cocoon, Denon VisYOUalize Yourself, Marantz Consolette, DENON PROFESSIONAL PITCH CONTROL, D+M University, HEOS, Denon Hi-Fi Remote, Marantz Hi-Fi Remote, Denon 500 Series Remote, Denon AVR Remote, Marantz AVR Remote, HEOS 3D, Audyssey MultEQ Editor app, HEOS (China), Denon Headphones, Denon Headphones (China), and others..