A free app for Android, by CCTV Camera Pros.
iCamViewer is a free app for Android phones and tablets that allows you to view live video streams from your network cameras, CCTV cameras, and some DVRs. You can watch cameras on the same local area network where your camera is located and also view remotely over the Internet when port forwarding is properly set up.
The app is compatible with most modern Android devices and supports both portrait and landscape modes.
The app is free to use and has no advertisements or in-app purchases.
iCamViewer is the most popular IP camera viewer for Android phones and tablets and is used by thousands of users worldwide.