Q-See 4-Channel DVR with MAC Compatibility and 500 GB Hard Drive and Full D1 Recording QT454-5 The Q-See QT View mobile app for iPhone/iPad and Android, enables you to view your property anywhere, at any time. Receive instant e-mail alerts, view live feeds, add/change video feeds, watch previously recorded video, move PTZ cameras, save or email still images, change DVR settings, and much more.