# Elementium vs Periodic

The clearest difference is in-app purchases: Periodic at none against Elementium's 9. Elementium's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

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

Elementium ships an update every 3 weeks, Periodic every 5 weeks. Both last shipped on October 12, 2026.

## The numbers

| Metric | Elementium | Periodic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (576 ratings)](https://appshunter.io/ios/app/elementium/id892123825/reviews)** | — |
| Number of ratings | **576** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Monetization | Freemium | — |
| Size | 752 MB | 35 MB |
| Requires iOS | 16.1 | **15.1** |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Samuel Spencer](https://appshunter.io/developer/1128165856) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## 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


### Periodic

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Elementium free?

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

### Is Periodic free?

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

### Do Elementium or Periodic have ads?

Periodic shows ads; Elementium does not.

### Which is updated more often, Elementium or Periodic?

Elementium ships an update every 3 weeks, and Periodic every 5 weeks. Most recently, Elementium was updated on October 12, 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.*