So sad...
I used to absolutely LOVE this screen saver when it came out as actual system screen saver back in the days and had the same expectations for the version in the app store but unfortunately there are some things which are not working out that great.
-No dual screen support
-Strange atrifacts on retina display
-No ability to save this as actual system screen saver
-Please include the Motion Sensor Tilting support like in the screen saver file
However if you use only one screen and not have a retina display it probably works okay as live wallpaper.
I will probably go with the actual system screen saver file which is on sale on the website for 3.99.
I ♥ about Desktop Aquarium 3D LIVE Wallpaper & ScreenSaver