Not really a screen saver, as you have to activate it manually. 20 different views, but they’re all looped clips 10 to 30 seconds long. The clips are HD, as advertised. The widgets are marginally useful, although some of them do not work correctly and there are plenty of apps that do the same things more effectively. I was hoping for a screensaver that simulated a live aquarium. 30 second loops, even with 20 choices, are not satisfactory for this purpose. If there were fewer selections with longer clips (15 to 30 minutes each) this app would be what I was looking for. I suspect the developers of this application do not actually use it.