See objects breathe!
This is fun visual illusion. Stare at the moving visualization for 1-2 minutes, and after that look away. You should see some weird visuals. They should resemble mild hallucinations of breathing, expanding or shrinking objects. Good distance for wathing is about 30 cm.
You can modify the visualization by swiping the screen. Double tapping the screen changes visualization effect. Test different settings for maximum effect.
This software is not recommended if you are sensitive to flashing lights. Use entirely at your own risk.
Note: if you like "Breathing objects", you should check my even more trippy (and useless) application, "Split My Balls!"