# EMD PTE vs Periodic

The clearest difference is ads: EMD PTE at none against Periodic's shown. EMD PTE also leads on iOS requirement (12.0 vs 15.1). Periodic's advantage is update cadence (every 5 weeks vs every 8 months). On price, in-app purchases and device support there is nothing between them.

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

EMD PTE ships an update every 8 months, Periodic every 5 weeks. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | EMD PTE | Periodic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (121 ratings)](https://appshunter.io/ios/app/emd-pte/id377393859/reviews)** | — |
| Number of ratings | **121** | — |
| Positive reviews | 90.5% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 18 MB | 35 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Merck KGaA (Darmstadt, Germany)](https://appshunter.io/developer/370548001) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## 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


### Periodic

[App page](https://appshunter.io/ios/app/periodic-table-elements/id1628647298)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is EMD PTE free?

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

### Is Periodic free?

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

### Do EMD PTE or Periodic have ads?

Periodic shows ads; EMD PTE does not.

### Which is updated more often, EMD PTE or Periodic?

EMD PTE ships an update every 8 months, and Periodic every 5 weeks. Most recently, EMD PTE was updated on October 5, 2026 and Periodic on October 12, 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.*