# Nuclear vs Isotope Browser

The clearest difference is rating: Isotope Browser at 4.8 against Nuclear's 4.2. Isotope Browser also leads on in-app purchases (none vs 3) and review sentiment (83% vs 69%). Nuclear's advantage is ratings volume (302 vs 27) and iOS requirement (7.0 vs 11.0). On price, ads and device support there is nothing between them.

Both are free to download. Nuclear sells 3 one-off in-app purchases. Isotope Browser asks for nothing beyond the download.

Isotope Browser holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: Nuclear has 302 ratings behind it against 27, so its average is the more settled of the two. Written reviews point the same way: 69% of Nuclear's written reviews are positive against 83% of Isotope Browser's.

Nuclear ships an update every 3 months, Isotope Browser every 6 weeks. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Nuclear | Isotope Browser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (302 ratings)](https://appshunter.io/ios/app/nuclear/id509546625/reviews) | **[4.8 (27 ratings)](https://appshunter.io/ios/app/isotope-browser/id943890538/reviews)** |
| Number of ratings | **302** | 27 |
| Positive reviews | 69.5% of reviews | **82.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 55 MB | 8 MB |
| Requires iOS | **7.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ESCAPE VELOCITY LIMITED](https://appshunter.io/developer/331526972) | [IAEA](https://appshunter.io/developer/535500126) |

## What reviewers say

### Nuclear

[App page](https://appshunter.io/ios/app/nuclear/id509546625)

Explore the quantum world and learn about chemical elements by building atoms. This app visually models interactive atoms, allowing you to add or subtract subatomic particles to construct stable elements and unlock them on the periodic table.

**Highlights:** Interactive 3D atom visualization, Build chemical elements by adding/subtracting particles, Unlock elements on the periodic table, Explore atomic decay of isotopes, Learn about matter at the atomic scale

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Build All Elements | $2.99 | one-time |
| Discover Your Table | $2.99 | one-time |
| Discover All | $4.99 | one-time |

**What reviewers like**

- 🚀 Awesome visuals
- 🔍 Great learning tool
- 👍 Fun and interactive
- 💡 Helpful for understanding atoms

**What reviewers complain about**

- 🐛 Bugs and glitches
- 💰 Paywall for full access
- 🔒 Locked features
- 🤔 Inaccurate decay/reaction modeling

**Reported bugs**

- Can't exit element discovery screen
- Proton cap prevents reaching higher elements
- Certain elements cannot be created
- Crashes when trying to add particles to Ununoctium

**Requested features**

- Expand decay modes (alpha, beta, etc.)
- Add ability to create molecules
- Improve stability/decay simulation
- Add more explanations and tutorials


### Isotope Browser

[App page](https://appshunter.io/ios/app/isotope-browser/id943890538)

Access comprehensive nuclear data for over 4,000 nuclides and isomers. Explore interactive charts, filter by various criteria, and view detailed information for each nuclide. Data is sourced from reliable resources and available offline.

**Highlights:** Properties of over 4,000 nuclides and isomers, Interactive Chart of Nuclides, Periodic Table of Elements, Filter by half-life, decay mode, radiation type, and energy, Detailed nuclide information with web links, Offline access to embedded database

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

**In-app purchases:** none


## Frequently asked questions

### Is Nuclear free?

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

### Is Isotope Browser free?

Isotope Browser is free to download, with no in-app purchases.

### Which has better reviews, Nuclear or Isotope Browser?

Isotope Browser is rated higher. Nuclear averages 4.2 out of 5 from 302 ratings, while Isotope Browser averages 4.8 from 27 ratings.

### Do Nuclear or Isotope Browser have ads?

Neither Nuclear nor Isotope Browser shows ads.

### Which is updated more often, Nuclear or Isotope Browser?

Nuclear ships an update every 3 months, and Isotope Browser every 6 weeks. Most recently, Nuclear was updated on October 12, 2026 and Isotope Browser on October 16, 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.*