Comparison

Four Dimensional Space vs Black Hole Sun

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

Head to head
About

Four Dimensional Space

Features
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Enter a rotating black hole and explore a visual experience beyond the limits of three-dimensional space. This app combines a glowing accretion disk with a conceptual 4D tesseract projected into 3D space, creating a dynamic and immersive visualization. Interact with the scene by adjusting tilt, rotation speed, and gravitational lensing strength to reveal new perspectives and distortions. Watch as the structure shifts and bends under the influence of the black hole’s gravity. No goals β€” just observe, explore, and experience a different dimension.

About

Black Hole Sun

Features
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Transform your device into a living gallery of cinematic space art. Black Hole Sun brings 450 cosmic artworks to life with custom Metal rendering, slow ambient motion, and elegant full-screen transitions. Explore black holes, distant worlds, luminous nebulae, alien landscapes, and other visions of the universeβ€”all presented with rich detail and a calm, atmospheric style. Browse the complete collection, preview each artwork in motion, build a personal list of favorites, or leave the app running as a quiet visual display. Every scene flows through cinematic transitions and subtle Ken Burns-style movement designed to make the artwork feel alive without becoming distracting. Save your favorite artwork images directly to Photos and use them as wallpapers on your iPhone. FEATURES β€’ 450 bundled cosmic artworks β€’ High-resolution 3840 Γ— 2160 HEIC imagery β€’ Custom Metal-powered live rendering β€’ Cinematic full-screen transitions β€’ Slow, ambient visual movement β€’ Subtle Ken Burns-style animation β€’ Complete thumbnail grid for easy browsing β€’ Full-screen artwork previews β€’ Favorites for building a personal collection β€’ Save artwork images directly to Photos β€’ Designed specifically for a beautiful iPhone experience Whether you want to discover new cosmic scenes, find a striking wallpaper, or simply enjoy a few quiet moments surrounded by space art, Black Hole Sun turns your iPhone into a window on the universe.

Screenshots

Four Dimensional Space4 screens
Black Hole Sun4 screens

Verdict

The call

The clearest difference is price: Four Dimensional Space at Free against Black Hole Sun's $0.99. Black Hole Sun's advantage is ads (none vs shown) and device support (5 vs 2). On update cadence, in-app purchases and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Four Dimensional Space is free to download; Black Hole Sun costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 28, 2026 and November 5, 2026 respectively.

Scorecard3 real differences Β· 3 level
Four Dimensional Space versus Black Hole Sun: the parameters behind the verdict, then further details
ParameterFour Dimensional SpaceBlack Hole Sun
PriceFree β€” better$0.99
Update frequencyEvery 3 monthsEvery 3 months
AdsYesNo β€” better
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, Mac, Apple TV, Vision Pro β€” better
Requires iOS26.226.0 β€” better
Further details β€” not scored
Size6 MB2.3 GB
Age rating4+4+
DeveloperToru KawaguchiPieter Hartzenberg

In-app purchases

None

Four Dimensional Space

No in-app purchases

None

Black Hole Sun

No in-app purchases

Questions

Is Four Dimensional Space free?
Four Dimensional Space is free to download, with no in-app purchases.
Is Black Hole Sun free?
Black Hole Sun costs $0.99, with no in-app purchases.
Do Four Dimensional Space or Black Hole Sun have ads?
Four Dimensional Space shows ads; Black Hole Sun does not.
Which is updated more often, Four Dimensional Space or Black Hole Sun?
Four Dimensional Space ships an update every 3 months, and Black Hole Sun every 3 months. Most recently, Four Dimensional Space was updated on October 28, 2026 and Black Hole Sun on November 5, 2026.

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