# Particle Zoo vs Atomizer AR

The clearest difference is in-app purchases: Particle Zoo at none against Atomizer AR's 4. Particle Zoo also leads on ratings volume (48 vs 3) and iOS requirement (11.1 vs 15.2). Atomizer AR's advantage is review sentiment (100% vs 81%) and update cadence (every 10 days vs every 3 weeks). On price, rating and ads there is nothing between them.

Both are free to download. Atomizer AR sells 4 in-app purchases, starting at $4.99 per month. Particle Zoo asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.9 for Particle Zoo against 4.0 for Atomizer AR. That said, the two scores are not equally well evidenced: Particle Zoo has 48 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 81% of Particle Zoo's written reviews are positive against 100% of Atomizer AR's.

Particle Zoo ships an update every 3 weeks, Atomizer AR every 10 days. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Particle Zoo | Atomizer AR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (48 ratings)](https://appshunter.io/ios/app/particle-zoo/id325403123/reviews) | **[4.0 (3 ratings)](https://appshunter.io/ios/app/atomizer-ar-quantum-chemistry/id6449015706/reviews)** |
| Number of ratings | **48** | 3 |
| Positive reviews | 81.1% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | **Free** | Freemium |
| Size | 14 MB | 137 MB |
| Requires iOS | **11.1** | 15.2 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [rickbdotcom LLC](https://appshunter.io/developer/325137420) | [Wonmo Seong](https://appshunter.io/developer/1625011193) |

## What reviewers say

### Particle Zoo

[App page](https://appshunter.io/ios/app/particle-zoo/id325403123)

Explore the fundamental building blocks of the universe with this pocket guide to subatomic particles. Learn about the diverse particles that constitute matter and energy, inspired by a popular plush toy collection.

**Highlights:** Subatomic particle information, Pocket-sized reference, Educational tool, Inspired by plush toys

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✨ Informative and educational
- 🎨 Cute and engaging design
- 👍 Easy to use and understand
- 📚 Great reference tool
- 💡 Fun way to learn physics

**What reviewers complain about**

- 🔗 Broken links
- 📉 Outdated content (Higgs Boson)
- ⏳ Lacks depth for advanced users
- 🧸 Appearance a tad childish
- 🖱️ Navigation can be tiring

**Reported bugs**

- Links don't work
- App no longer works on older iOS versions (iOS 11, iOS 6)
- Higgs Boson listed as theoretical
- Some buttons do not work
- App crashes on older devices

**Requested features**

- Add more particles (Build A Baryon, etc.)
- Animate the critters
- Bring back removed features (Build A Baryon, beta decay simulator)
- Update Higgs Boson information
- Add more interactions (strong, electromagnetic)


### Atomizer AR

[App page](https://appshunter.io/ios/app/atomizer-ar-quantum-chemistry/id6449015706)

Visualize atomic and molecular orbitals in 3D, render electron density clouds, and explore molecules in augmented reality. Calculate molar mass, balance equations, and sketch molecules in 2D.

**Highlights:** 3D atomic and molecular orbital visualization, Electron density cloud rendering, WebXR augmented reality exploration, Molecule control via gyroscope, Molar mass calculation, Equation balancing and stoichiometry, 2D molecule sketching

**Features:** Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Californium Pass | $4.99 | per month |
| Einsteinium Pass | $12.99 | per month |
| Californium Yearly | $39.99 | per year |
| Einsteinium Yearly | $99.00 | per year |


## Frequently asked questions

### Is Particle Zoo free?

Particle Zoo is free to download, with no in-app purchases.

### Is Atomizer AR free?

Atomizer AR is free to download, with in-app purchases available.

### Which has better reviews, Particle Zoo or Atomizer AR?

Atomizer AR is rated higher. Particle Zoo averages 3.9 out of 5 from 48 ratings, while Atomizer AR averages 4.0 from 3 ratings.

### Do Particle Zoo or Atomizer AR have ads?

Neither Particle Zoo nor Atomizer AR shows ads.

### Which is updated more often, Particle Zoo or Atomizer AR?

Particle Zoo ships an update every 3 weeks, and Atomizer AR every 10 days. Most recently, Particle Zoo was updated on October 31, 2026 and Atomizer AR on November 3, 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.*