Those are VGA and HDMI splitters, they do not do what you are asking for. A splitter will just show the same image on many monitors.
If you want different output on 8 screens, you need 8 video outputs on your computer. The video card thewireguys links would do it, but it doesn't come cheap. Otherwise you can use several video cards, I am sure there are cheaper video cards with 3 outputs, but you would need a motherboard with at least 3 PCIE ports (3 cards, 3 video out each).
So what's solution for this problem?? I must use android app? Use more video output on my PC?