A free program for Android, by Swann Security.

SwannView is a remote viewing app for Android devices. It allows you to watch live streams from your Swann DVR. You can watch up to four cameras at the same time. It supports up to 8 audio channels. You can record and watch it later. You can also change the video quality. You can view live streams directly on your phone. You can also use the built-in PTZ (pan, tilt, zoom) controls. It allows you to control the camera from the app. Moreover, it is important to remember that you can already stream using your data or WiFi to whatever is convenient for you.