The Fourth Dimension

🇺🇸 United States
Drew Olbrich  | 
47
ASO score
Text
45/100
Reviews
50/100
Graphic
60/100
Other
0/100
rating
App Rating
4.8
rating
Votes
10.01K
rating
App Age
13y 10m
rating
Last Update
Oct 17, 2023

Compare with Category Top Apps

Metrics
Current App
Category Top Average
Difference
Rating
4.75
4.28
+11%
Number of Ratings (Voted)
10K
341.7K
-97%
App Age
13y 10m
7y 8m
+80%
Price
$3
$0
In-app Purchases Price
$0
$38
Update Frequency
809d
48d
+1 597%
Title Length
20
23
-13%
Subtitle Length
30
22
+36%
Description Length
2 161
2 435
-11%
Number of Screenshots
615
1293
-52 %
Size
5MB
150MB
-96 %

Category Ranking in United States

All
New
Trending Up
Trending Down
Top Dec 26, 2025 Jan 02, 2026
No results were found!
Top Dec 26, 2025 Jan 02, 2026
No results were found!
Top Dec 26, 2025 Jan 02, 2026
No results were found!
Top Dec 26, 2025 Jan 02, 2026
No results were found!

Ranking Keywords in United States

Keywords App Rank
измерения
out out
Illustration
Analyze this and other apps using Asolytics tools

Text ASO

Title (
Characters: 20 of 30
)
The Fourth Dimension
Subtitle (
Characters: 30 of 30
)
Hold a tesseract in your hands
Description (
Characters: 2161 of 4000
)
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.}
Read more

Visual ASO

Screenshots

Rating & Reviews

Reviews Overview
🧐 Coming Soon…
Rating
4.8
10 011 voters

Some Latest Reviews

DanielDC88
21 Nov, 2025
5
Came back to this after maybe a decade! The issue I’m having on my 13 pro max is the stereo images are too far apart for me to make them converge. I suggest adding a slider to change the binoculars distance. My IPD is about 57mm.
Pacific_www
29 Oct, 2025
5
Can’t say enough about how much I like this app. The only sad part is there isn’t more. It’s a great explanation of the 4th D.
jubaï
03 Aug, 2025
5
Thanx a lot, this is very interesting. projections inter Space dimensions are so use full to understand the process! the 4th Time dimension isn’t in easy accèss but this app clearly show the way…. Great!!
jesuschristhereusethisnickname
18 Jul, 2025
3
Update: Nothing was fixed in half a decade or so. 3 stars. Original review: But there is nothing like it to compare to, so that makes it a 5 star by default. First, the background music is a big problem for me. Don’t know if others experience the same thing, but the background music tenses me up and I cannot concentrate on the contents of the app because I’m all stressed out. The heart beating in the background music also contributes to this. Luckily, the fix was easy. I just set my phone to silent, which is what it is usually set to anyway. But that only worked because there is no important audio content in the app. Second, in many scenes, I would rotate the projection of the tesseract and then pause in a particular position to think for a minute, but the damn scene would move by itself slightly and mess my position. There should be an option to either turn off this automatic scene movement completely or in the current scene only. Third, I think your explanation for the projection of a 3D cube in a 2D world is too simplistic and does not really capture how hard it is for the 2D person to actually understand the projection of the cube. For that, you would have to explain how a 2D person actually perceives a square. If that would be explained in more detail (he never sees a simple square in the same way we 3D creatures do; he only sees some 2D segments instead) it would help people understand why it is so hard for us to imagine things in a world with one extra dimension. Fourth, I don’t understand why there are two extra axes instead of one when I move the tesseract in 4D. I would expect only the 4th axis to be available for extra movement, but this problem might just be my limitation in understanding this. Maybe it makes sense to have two extra axes. It’s just really confusing to me.
redadz
19 Apr, 2025
5
I played through the interactive scenes in this app years ago and found the 2D -> 3D -> 4D rotation analogies really helped to give an intuitive sense for the shape of a tesseract. The attention to detail and production values are quite high, and I was very happy to find that it still works perfectly in 2025. I’d love to see more from this developer!
Stagnate
17 Apr, 2025
5
Beautifully executed visual representation of a complex theory. So rare these days to find an app that focusses only on what it’s trying to do and does it well - incredibly user friendly, well designed, well written and effective as a learning aid. I really hope the developer and/or creator are working in some kind of education capacity now.
Gordon Zola
03 Mar, 2025
5
It’s nice to just pay once, no in app purchase like everything nowadays. The activity is short but I really enjoyed the stereoscopic simulations
Luhvhj
19 Jul, 2023
5
A line needs 3D to exist. Therefore the demos are useless in explaining what they are trying to explain as they always have to use a 3D line to make drawings. Wish someone would explain that……
ErikSF999
10 Apr, 2023
5
Now I understand why Dali painted the hypercube the way he did. I had a poster print of that painting on my wall 45 years ago, but wound up studying language instead of math. I’m still a math geek in my spare time, but for some reason I’d never gotten around to trying to manipulate a hypercube in 3 dimensions. I would say my education is complete, but it never will be, of course. But thanks for filling in this part—I’ll be seeing how many odd 3-D shadows I can make from this. And wondering about representing five dimensions in three. Since, after all, this 3-D tesseract is only really projected onto my 2-D iPad screen, so both the third and fourth dimensions are illusions of perspective.

Other

Additional Information
Rating:
4.77
Voted: 10.01K
App Store Link:
Price: 2.99 $
Website:
Email: -
Privacy Policy:
Categories: Books, Education
Size: 5MB
App Age: 13 years 10 months
Release Date: Mar 05, 2012
Last Update: Oct 17, 2023
Version: 1.14
Version history
1.14
Oct 17, 2023
Updated for iOS 17. Plays audio when the device's Silent Mode is on.
1.13
Sep 12, 2022
Updated for iOS 16.

More by Drew Olbrich

Version history