Ions 2+ vs Four Dimensional Space
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ions 2+
Explore a dynamic particle simulation with extensive customization options. Control ion color, size, shape, and trails. Utilize device motion and advanced grid placement for unique creations. Supports a high particle count for detailed simulations.
- Customizable ion color and size
- Shape and trail effects
- Accelerometer control
- Rectangular and polar grids
- High particle count (up to 100,000)
- Save custom layouts and looks
Read full descriptionHide full description
Ions is back, recharged and better than ever! The sequel to the staff-favorite particle simulation allows total control over the look and behavior of your creations. Ions 2+ also supports iPhones and iPods as well as iPads! Your ions can now change color and size based on age, speed, direction, and other parameters! Change shape, leave trails, change the background, and more! Use your device’s accelerometer to react to gravity or add turbulence and drag for more variety. You also have both rectangular and polar grids for precise placement. Why stop at only 20,000 particles? With Ions 2+, you can raise the limit up to 100,000 on faster devices. Of course you can still save your favorite layouts, as well as any custom looks you’ve created. Ions 2+. I'm positive you'll love it.
Four Dimensional Space
Read full descriptionHide full description
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 — just observe, explore, and experience a different dimension.
Screenshots
Verdict
The clearest difference is price: Four Dimensional Space at Free against Ions 2+'s $1.99. Four Dimensional Space also leads on update cadence (every 3 months vs every 15 months). Ions 2+'s advantage is ads (none vs shown) and iOS requirement (8.0 vs 26.2). On 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
Four Dimensional Space is free to download; Ions 2+ costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Ions 2+ ships an update every 15 months, Four Dimensional Space every 3 months. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.
| Parameter | Ions 2+ | Four Dimensional Space |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.8 (39 ratings) — better | — |
| Positive reviews | 93.9% of reviews | — |
| Number of ratings | 39 — better | — |
| Update frequency | Every 15 months | Every 3 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 49 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Douglas Applewhite | Toru Kawaguchi |
In-app purchases
Ions 2+
No in-app purchases
Four Dimensional Space
No in-app purchases
Questions
Is Ions 2+ free?
Is Four Dimensional Space free?
Do Ions 2+ or Four Dimensional Space have ads?
Which is updated more often, Ions 2+ or Four Dimensional Space?
Other comparisons
