# Cyclotron vs Atomus HD

The clearest difference is monetization model: Cyclotron at free against Atomus HD's paid. Cyclotron also leads on iOS requirement (8.1 vs 15.6). Atomus HD's advantage is review sentiment (91% vs 63%) and update cadence (every 3 months vs every 16 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Cyclotron costs $1.99 and Atomus HD $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Atomus HD holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 153 and 60 respectively. Written reviews point the same way: 63% of Cyclotron's written reviews are positive against 91% of Atomus HD's.

Cyclotron ships an update every 16 months, Atomus HD every 3 months. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Cyclotron | Atomus HD |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | [4.6 (153 ratings)](https://appshunter.io/ios/app/cyclotron/id437961443/reviews) | **[4.8 (60 ratings)](https://appshunter.io/ios/app/atomus-hd/id741515911/reviews)** |
| Number of ratings | **153** | 60 |
| Positive reviews | 63.2% of reviews | **90.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 months** |
| Monetization | **Free** | Paid |
| Size | 6 MB | 63 MB |
| Requires iOS | **8.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [PDJ Apps](https://appshunter.io/developer/290231771) | [SungLab Inc](https://appshunter.io/developer/1691666995) |

## What reviewers say

### Cyclotron

[App page](https://appshunter.io/ios/app/cyclotron/id437961443)

Interact with a dynamic particle system by touching the screen. Use multiple fingers to alter particle behavior for a visually stimulating experience. Ideal for entertainment and keeping children engaged.

**Highlights:** Interactive particle simulation, Multi-touch particle behavior, Visually stimulating, Engaging for kids, Time-killing entertainment

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🌟 Mesmerizing visuals
- 👍 Simple and intuitive
- 💡 Unique multitouch interactions
- 🎨 Vibrant color palette
- 🎨 Customizable background

**What reviewers complain about**

- 🐛 Occasional crashes or freezes
- 🔍 Limited functionality
- 🕰️ Gets boring after a while
- 🤢 Can cause motion sickness
- 💰 Not worth the price for some

**Reported bugs**

- Compatibility issues on older devices
- Inconsistent performance after updates
- Delayed or unresponsive touch inputs

**Requested features**

- More customization options
- Additional visual modes or effects
- Screenshot/photo capture capability
- Ability to change movement speed
- Integration with music playback


### Atomus HD

[App page](https://appshunter.io/ios/app/atomus-hd/id741515911)

Experience a premium kinetic universe of light and motion with dynamic, evolving particle structures. This app offers a richer, more immersive visual experience perfect for creative focus, relaxation, or quiet exploration.

**Highlights:** Evolving light and motion structures, Richer particle density and flow, Smooth 60 FPS rendering, 10-finger multi-touch support, Adjustable particle settings, Multiple color modes, Ad-free experience

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ✨ Visually stunning graphics
- 🧘‍♀️ Relaxing and calming experience
- 🎨 Creative and mesmerizing visuals
- 🎶 Beautiful and soothing music
- 🎮 Addictive and engaging gameplay

**What reviewers complain about**

- ⏳ Can become boring after a while
- ❓ Lack of user manual/explanations
- 🎶 Music can be repetitive
- 💸 Some users feel it's a waste of money
- 🎛️ Limited customization options

**Reported bugs**

- App crashes with 11 fingers
- Orientation issues on tablets
- Music not working
- Sound stopped working
- App freezes after opening and exiting

**Requested features**

- User manual or explanations
- Ability to customize starting points
- Option to record or save favorite settings
- Ability to take screenshots
- More music tracks/playlists


## Frequently asked questions

### Is Cyclotron free?

Cyclotron costs $1.99, with no in-app purchases.

### Is Atomus HD free?

Atomus HD costs $1.99, with no in-app purchases.

### Which has better reviews, Cyclotron or Atomus HD?

Atomus HD is rated higher. Cyclotron averages 4.6 out of 5 from 153 ratings, while Atomus HD averages 4.8 from 60 ratings.

### Do Cyclotron or Atomus HD have ads?

Neither Cyclotron nor Atomus HD shows ads.

### Which is updated more often, Cyclotron or Atomus HD?

Cyclotron ships an update every 16 months, and Atomus HD every 3 months. Most recently, Cyclotron was updated on October 16, 2026 and Atomus HD on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*