Exploratorium: Home

Curious? There’s an app for that.

Curious? There’s an app for that.

If you haven’t yet downloaded the apps in our Uncovered series, then you’re in for a surprise—actually, loads of them. Because as much as you like to trust your own eyes and ears, it turns out that what they tell you can be wildly, wonderfully wrong. So get these apps . . . and get ready for a surprise.

Best of all, they’re free.


Sound Uncovered

An Interactive Book for the iPad

Hear with your eyes, see with your ears, test your hearing, make and modify recordings—this app puts you at the center of the experiment.

Explore the surprising side of sound with Sound Uncovered, an interactive collection featuring auditory illusions, acoustic phenomena, and other things that go bump, beep, boom, and vroom.


Color Uncovered

An Interactive Book for the iPad

When is yellow yellower than yellow? What color is a whisper? What's missing from the palette of Renaissance painters?

Explore the surprising side of color with Color Uncovered, featuring fascinating illusions, articles, and videos.