# EMD PTE vs Isotope Browser

The clearest difference is update cadence: Isotope Browser at every 6 weeks against EMD PTE's every 8 months. EMD PTE's advantage is ratings volume (124 vs 27). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Isotope Browser holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 124 and 27 respectively. Written reviews complicate that: 90% of EMD PTE's written reviews are positive against 83% of Isotope Browser's, so the app with the better star average is not the one people write more warmly about.

EMD PTE ships an update every 8 months, Isotope Browser every 6 weeks. The most recent releases landed on October 21, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | EMD PTE | Isotope Browser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (124 ratings)](https://appshunter.io/ios/app/emd-pte/id377393859/reviews) | **[4.8 (27 ratings)](https://appshunter.io/ios/app/isotope-browser/id943890538/reviews)** |
| Number of ratings | **124** | 27 |
| Positive reviews | **90.5% of reviews** | 82.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 18 MB | 8 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Merck KGaA (Darmstadt, Germany)](https://appshunter.io/developer/370548001) | [IAEA](https://appshunter.io/developer/535500126) |

## What reviewers say

### EMD PTE

[App page](https://appshunter.io/ios/app/emd-pte/id377393859)

This comprehensive mobile reference work provides detailed information on all chemical elements. It features a molar mass calculator, interactive visualizations, and offline access, making it an indispensable tool for students, educators, and chemistry enthusiasts.

**Highlights:** Detailed element information, Visualized element properties, Molar mass calculator, Offline access, Multi-language support, Element comparison function

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Excellent user interface
- 🚀 Intuitive and easy to use
- 💡 Comprehensive information on elements
- 🔍 Detailed element properties and data
- 🎨 Visually appealing design

**What reviewers complain about**

- 🐛 Occasional crashes or freezes
- 🔍 Missing some advanced features
- 🔧 Needs optimization for newer devices
- 🔢 Inconsistent unit display (Fahrenheit vs Celsius)

**Reported bugs**

- Incorrect atomic radius data for some elements
- Glitches when switching between screens

**Requested features**

- Add search functionality
- Provide more customization options
- Include isotope and mass data
- Improve navigation between elements


### 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 EMD PTE free?

EMD PTE is free to download, with no in-app purchases.

### Is Isotope Browser free?

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

### Which has better reviews, EMD PTE or Isotope Browser?

Isotope Browser is rated higher. EMD PTE averages 4.6 out of 5 from 124 ratings, while Isotope Browser averages 4.8 from 27 ratings.

### Do EMD PTE or Isotope Browser have ads?

Neither EMD PTE nor Isotope Browser shows ads.

### Which is updated more often, EMD PTE or Isotope Browser?

EMD PTE ships an update every 8 months, and Isotope Browser every 6 weeks. Most recently, EMD PTE was updated on October 21, 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.*