Comparison

4Dice vs The Fourth Dimension

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

4Dice

Explore a hypercube visualized as a 4-dimensional, 8-sided die. Interact with the die using multitouch controls to reveal its hidden faces as they come into view during rolls. Experience a unique perspective on geometric visualization.

Highlights
  • Multitouch controls
  • 4D hypercube exploration
  • Interactive die rolling
  • Geometric visualization
  • Unique perspective rendering
Features
Read full description

This application exploits multitouch controls to explore a hypercube labeled as a 4-dimensional, 8-sided die. The hypercube's eight cube-shaped faces are rendered as a 4D being would see them in 4D light: thus, only one, two, three, or four cubic faces can appear at one time while the die rolls, but no more. Faces that would be invisible to a 4D gambler cannot be seen without interactively rolling the die to bring them into view.

About

The Fourth Dimension

Explore a complex mathematical concept through an interactive 3D experience. This app uses a unique touch interface to help you visualize and understand the fourth dimension in an engaging and accessible way.

Highlights
  • Interactive 3D touch interface
  • Explains the fourth dimension
  • Accessible language for all
  • 30-page interactive book
  • Visual and hands-on learning
Read full 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.

Screenshots

4Dice4 screens
The Fourth Dimension4 screens

Verdict

The call

The clearest difference is price: 4Dice at Free against The Fourth Dimension's $2.99. 4Dice also leads on rating (5.0 vs 4.8) and iOS requirement (9.3 vs 12.0). The Fourth Dimension's advantage is ratings volume (1.9K vs 3) and update cadence (every 4 months vs every 18 months). On review sentiment, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

4Dice is free to download; The Fourth Dimension costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

4Dice holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: The Fourth Dimension has 1.9K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of 4Dice's written reviews are positive against 94% of The Fourth Dimension's.

UpkeepUpdate frequency

4Dice ships an update every 18 months, The Fourth Dimension every 4 months. The most recent releases landed on June 5, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 4 level
4Dice versus The Fourth Dimension: the parameters behind the verdict, then further details
Parameter4DiceThe Fourth Dimension
PriceFree — better$2.99
Rating5.0 (3 ratings) — better4.8 (1.9K ratings)
Positive reviews100.0% of reviews — better94.2% of reviews
Number of ratings31.9K — better
Update frequencyEvery 18 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better12.0
Further details — not scored
Size15 MB5 MB
Age rating12+4+
DeveloperAndrew HansonLunar Skydiving LLC

Customer experience

4Dice

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

The Fourth Dimension

All ratings1,940 ratings
Positive97.0%
Neutral1.4%
Negative1.5%
Written reviews312 reviews
Positive94.2%
Neutral1.9%
Negative3.8%

In-app purchases

None

4Dice

No in-app purchases

None

The Fourth Dimension

No in-app purchases

Questions

Is 4Dice free?
4Dice is free to download, with no in-app purchases.
Is The Fourth Dimension free?
The Fourth Dimension costs $2.99, with no in-app purchases.
Which has better reviews, 4Dice or The Fourth Dimension?
4Dice is rated higher. 4Dice averages 5.0 out of 5 from 3 ratings, while The Fourth Dimension averages 4.8 from 1.9K ratings.
Do 4Dice or The Fourth Dimension have ads?
Neither 4Dice nor The Fourth Dimension shows ads.
Which is updated more often, 4Dice or The Fourth Dimension?
4Dice ships an update every 18 months, and The Fourth Dimension every 4 months. Most recently, 4Dice was updated on June 5, 2026 and The Fourth Dimension on September 23, 2026.

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