# Elementium vs Isotope Browser

The clearest difference is in-app purchases: Isotope Browser at none against Elementium's 9. Isotope Browser also leads on rating (4.8 vs 4.6) and iOS requirement (11.0 vs 16.1). Elementium's advantage is ratings volume (576 vs 27). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. Elementium sells 9 in-app purchases, starting at $1.99 per month. Isotope Browser asks for nothing beyond the download.

Isotope Browser holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Elementium has 576 ratings behind it against 27, so its average is the more settled of the two. Written reviews point the same way: 75% of Elementium's written reviews are positive against 83% of Isotope Browser's.

Elementium ships an update every 3 weeks, Isotope Browser every 6 weeks. The most recent releases landed on September 19, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Elementium | Isotope Browser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (576 ratings)](https://appshunter.io/ios/app/elementium/id892123825/reviews) | **[4.8 (27 ratings)](https://appshunter.io/ios/app/isotope-browser/id943890538/reviews)** |
| Number of ratings | **576** | 27 |
| Positive reviews | 75.0% of reviews | **82.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Freemium | **Free** |
| Size | 752 MB | 8 MB |
| Requires iOS | 16.1 | **11.0** |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Samuel Spencer](https://appshunter.io/developer/1128165856) | [IAEA](https://appshunter.io/developer/535500126) |

## What reviewers say

### Elementium

[App page](https://appshunter.io/ios/app/elementium/id892123825)

Access comprehensive information on every element of the periodic table. Explore detailed data, visualize trends, and utilize a built-in solubility calculator. Perfect for students and professionals needing quick, accurate chemical data.

**Highlights:** Detailed element information, Interactive periodic table, Dynamic filtering and trend visualization, Solubility calculator, Element image library, Bohr model visualizations, Home screen widgets

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ION, 1 month | $1.99 | per month |
| ION, 3 Months | $3.99 | per 3 months |
| ION, 6 months | $5.99 | per 6 months |
| ION, 1 year | $9.99 | per year |
| Export Data | $0.99 | one-time |
| Bohr Models | $1.99 | one-time |
| Advanced Sorting | $2.99 | one-time |
| Visual Elements | $3.99 | one-time |
| Advanced Tools | $4.99 | one-time |

**What reviewers like**

- 👍 User-friendly and intuitive interface
- 📚 Comprehensive element information and data
- 🎨 Beautiful, clean, and visually appealing design
- 🔗 Helpful Wikipedia and external resource links
- 📖 Excellent for educational purposes and studying

**What reviewers complain about**

- 💰 Expensive subscription model for premium features
- 🔐 Paywall blocking key features and element images
- 📺 Intrusive ads and purchase prompts on startup
- 🎨 Poor color contrast on metalloid background text
- 📱 Crashes on older devices (iPhone 6G iPod Touch, iPhone XS Max)

**Reported bugs**

- App crashes on startup and when tapping elements
- Crashes on older iOS devices and iPod Touch
- Molar mass not visible in iPhone landscape orientation
- Intrusive purchase prompt that's difficult to dismiss
- Rating request spam appearing too early in user experience

**Requested features**

- Element images and visual representations
- One-time purchase option instead of subscription
- Zoom out to view entire periodic table at once
- Better display of molar mass on iPhone in landscape mode
- More detailed information and content


### 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 Elementium free?

Elementium 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, Elementium or Isotope Browser?

Isotope Browser is rated higher. Elementium averages 4.6 out of 5 from 576 ratings, while Isotope Browser averages 4.8 from 27 ratings.

### Do Elementium or Isotope Browser have ads?

Neither Elementium nor Isotope Browser shows ads.

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

Elementium ships an update every 3 weeks, and Isotope Browser every 6 weeks. Most recently, Elementium was updated on September 19, 2026 and Isotope Browser on September 21, 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.*