# The Elements by Theodore Gray vs Periodic

The clearest difference is price: Periodic at Free against The Elements by Theodore Gray's $9.99. Periodic also leads on update cadence (every 5 weeks vs every 3 months) and iOS requirement (15.1 vs 17.0). The Elements by Theodore Gray's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

Periodic is free to download; The Elements by Theodore Gray costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

The Elements by Theodore Gray ships an update every 3 months, Periodic every 5 weeks. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | The Elements by Theodore Gray | Periodic |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.6 (122 ratings)](https://appshunter.io/ios/app/the-elements-by-theodore-gray/id364147847/reviews)** | — |
| Number of ratings | **122** | — |
| Positive reviews | 73.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Paid | — |
| Size | 1.5 GB | 35 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NatureGuides Ltd.](https://appshunter.io/developer/310574314) | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) |

## What reviewers say

### The Elements by Theodore Gray

[App page](https://appshunter.io/ios/app/the-elements-by-theodore-gray/id364147847)

Explore the building blocks of the universe with this interactive guide to the periodic table. Discover beautifully photographed elements, fascinating stories, and detailed 3D models of over 500 objects, all presented in multiple languages.

**Highlights:** Living periodic table interface, Rotating 3D element samples, Detailed 3D object models, Pinch-zoom and 3D stereo viewing, Multilingual support, Fascinating stories and facts

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

**In-app purchases:** none

**What reviewers like**

- 💎 Stunning visuals and 3D animations
- 📚 Comprehensive information on elements
- 🎨 Engaging and humorous writing style
- 🏫 Excellent educational tool for all ages

**What reviewers complain about**

- 🔍 Difficult to navigate and find specific elements
- 🔌 Massive file size takes up a lot of storage
- 🐛 Frequent crashes and stability issues
- 💰 Expensive for the limited content

**Reported bugs**

- Element descriptions cut off on iPhone 6 Plus
- Crashes when switching landscape orientations
- Unable to download app after initial purchase

**Requested features**

- Add option to disable animations
- Improve periodic table navigation
- Include more detailed scientific information
- Support multiple languages and spellings


### Periodic

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is The Elements by Theodore Gray free?

The Elements by Theodore Gray costs $9.99, with no in-app purchases.

### Is Periodic free?

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

### Do The Elements by Theodore Gray or Periodic have ads?

Periodic shows ads; The Elements by Theodore Gray does not.

### Which is updated more often, The Elements by Theodore Gray or Periodic?

The Elements by Theodore Gray ships an update every 3 months, and Periodic every 5 weeks. Most recently, The Elements by Theodore Gray was updated on October 14, 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.*