The Fourth Dimension vs SPACE by THIX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Interactive 3D touch interface
- Explains the fourth dimension
- Accessible language for all
- 30-page interactive book
- Visual and hands-on learning
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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.
SPACE by THIX
Create and explore your own universe with realistic physics. Build celestial bodies, experiment with natural laws, and journey through the cosmos you design. Learn astronomy and astrophysics through interactive play.
- Create celestial bodies (planets, stars, black holes)
- Experiment with gravity and natural laws
- Simulate supernovae and planetary collisions
- Interactive real-time physics
- Explore created universes
- Learn astronomy and astrophysics
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* Best of 2016 – Apple * Create your own universe. Play with the law of nature. Visit the outer worlds. Build asteroids, nebula, comets, planets, moons, stars, pulsars and even blackholes at your fingertips. Experiment with gravity, supernova, planetary collision and so forth. Zoom in to ride comets. Zoom out to gaze at the galaxy of stars. S C I E N C E D R I V E N Learn Astronomy and Astrophysics for fun and creativity. All celestial bodies you create can move and interact in real-time and in accordance with the Newtonian astrophysics laws. C E L E S T I A L T O U C H Move planets with your fingers. Swipe to shoot a comet. Play with your own universe in an astronomical scale. SPACE puts gigantic celestial bodies under your fingertips. C O S M I C V O Y A G E Meditate in the indescribable beauty of space that you create, anywhere and anytime. Hold your device to view the universe in from any angle. Visit us: thix.co Like us: facebook.com/thixlab Follow us: twitter.com/thixlab Comments or Questions: support@thixlab.com
Screenshots
Verdict
The clearest difference is review sentiment: The Fourth Dimension at 94% against SPACE by THIX's 50%. The Fourth Dimension also leads on rating (4.8 vs 3.7) and ratings volume (1.9K vs 169). SPACE by THIX's advantage is update cadence (every 2 months vs every 4 months) and iOS requirement (10.0 vs 12.0). On price, 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
The Fourth Dimension costs $2.99 and SPACE by THIX $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
The Fourth Dimension holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: The Fourth Dimension has 1.9K ratings behind it against 169, so its average is the more settled of the two. Written reviews point the same way: 94% of The Fourth Dimension's written reviews are positive against 50% of SPACE by THIX's.
The Fourth Dimension ships an update every 4 months, SPACE by THIX every 2 months. Both last shipped on September 23, 2026.
| Parameter | The Fourth Dimension | SPACE by THIX |
|---|---|---|
| Price | $2.99 | $2.99 |
| Rating | 4.8 (1.9K ratings) — better | 3.7 (169 ratings) |
| Positive reviews | 94.2% of reviews — better | 50.5% of reviews |
| Number of ratings | 1.9K — better | 169 |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 106 MB |
| Age rating | 4+ | 4+ |
| Developer | Lunar Skydiving LLC | THIX LLC |
Customer experience
The Fourth Dimension
SPACE by THIX
Bugs and requests
The Fourth Dimension
Not enough reviews yet to summarise bugs or requests.
SPACE by THIX
Reported bugs
4 issues- Planets and objects behaving erratically or disappearing
- Frequent crashes or freezes, especially with many objects
- Inconsistent or unresponsive touch controls
- Incorrect physics or behavior of certain celestial bodies
Requested features
5 requests- Add ability to customize and edit planets
- Implement time controls to speed up/slow down simulation
- Provide more celestial objects and phenomena to interact with
- Improve performance and reduce lag on complex scenes
- Include a tutorial or in-game guidance for new players
In-app purchases
The Fourth Dimension
No in-app purchases
SPACE by THIX
No in-app purchases
Questions
Is The Fourth Dimension free?
Is SPACE by THIX free?
Which has better reviews, The Fourth Dimension or SPACE by THIX?
Do The Fourth Dimension or SPACE by THIX have ads?
Which is updated more often, The Fourth Dimension or SPACE by THIX?
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