The Fourth Dimension 4+

Hold a tesseract in your hands

Lunar Skydiving LLC

    • 4.8 • 192 Ratings
    • $3.99

Screenshots

Description

The Fourth Dimension is a 30-page interactive book that explains a single mathematical idea in language that anyone can understand. Instead of static images or canned videos, this app employs a unique 3D touch interface that lets you literally grasp the concept of the fourth dimension with your own hands.

“Not only can you blow your own mind over and over again, you can also enjoy watching your friends’ minds being blown in front of you.” — Cult of Mac

“One of the coolest apps I've ever used... The Fourth Dimension is to boring learning apps what Carl Sagan's Cosmos was to staid science documentaries.” — BuzzFeed

“The app is very cool, and it's unlike pretty much anything we've seen in the App Store.” — The Verge

“This is one of my most favorite iOS apps ever.” — George Musser, contributing editor for Scientific American and author of The Complete Idiot's Guide to String Theory

(App Store user reviews follow.)

“Blew my mind. I generally don't use 'learning' apps as they're mostly gimmicks. This one, though, truly made me think. I hope this developer comes out with more outstanding apps such as this one. Bravo!” — Iceitic

“Astounding. That some people care passionately enough about tesseracts to go create a fantastic app for others to understand them is incredible. The app is extremely well designed, wittily written, and executed with love. That alone is worth buying it, besides the fact that I learned what the hell a tesseract was.” — Duncan MacMichael

“Fantastic! This is what someone really smart, and who really knows how to teach well, can do with a tablet. And the authors are funny, too, which is a neat bonus.” — DNY

“Fantastic app. I work at a leading UK university. If only all our material was this well written and presented. Definitely worth buying and then spending a bit of time with over a day or two to get your head around the fourth dimension. Great app!” — JulesFM

“Great job! This app does the best job explaining the 4th dimension. Why learn it in some boring classroom when here you can have an interactive and visual explanation.” — Aco Strklalj

Over 250,000 people have blown their minds with this app.

What’s New

Version 1.14

Updated for iOS 17.
Plays audio when the device's Silent Mode is on.

Ratings and Reviews

4.8 out of 5
192 Ratings

192 Ratings

Hammerstak ,

Great visualization and interactivity....but.....

...once I reached the end my cat started walking on the ceiling and my hair started getting shorter. I'm not even going to tell you what happened when I went to the bathroom....

shelbeeray ,

Fascinating

I’m not sure I understand this, but the ability to manipulate the image got me a bit closer to understanding.I am going to keep the app and refer back to it as I read more about the concept. Thank you for creating this app!

orvn ,

Nice animations and interactivity, could be more

The visualizations were pretty cool, but if you know what a hypercube is and have ever seen a GIF of its rotation, you probably grasped these concepts already.

Would be interesting if the app developers extended this further into something with even more interactivity or something that explores M-theory’s 11 dimensions in a quasi-visual fashion.

App Privacy

The developer, Lunar Skydiving LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Contact Info

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Supports

  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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