# AtomicTiles vs Photronium

The clearest difference is price: Photronium at Free against AtomicTiles's $3.99. Photronium also leads on update cadence (monthly vs every 19 months) and ratings volume (8 vs 1). AtomicTiles's advantage is in-app purchases (none vs 1). On rating, ads, device support and iOS requirement there is nothing between them.

Photronium is free to download; AtomicTiles costs $3.99 up front. Photronium sells 1 one-off in-app purchase. AtomicTiles asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for AtomicTiles against 5.0 for Photronium. That said, the two scores are not equally well evidenced: Photronium has 8 ratings behind it against 1, so its average is the more settled of the two.

AtomicTiles ships an update every 19 months, Photronium monthly. The most recent releases landed on September 25, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | AtomicTiles | Photronium |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/atomictiles/id522105648/reviews) | [5.0 (8 ratings)](https://appshunter.io/ios/app/photronium-physics-equations/id1546383517/reviews) |
| Number of ratings | 1 | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 9 MB | 59 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | iPad, Mac | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Hao Nguyen](https://appshunter.io/developer/1546383519) |

## What reviewers say

### AtomicTiles

[App page](https://appshunter.io/ios/app/atomictiles/id522105648)

Explore the fundamental building blocks of matter. This interactive tool allows students to understand atomic structure and how atoms bond to form molecules. Visualize valence electrons and their role in chemical bonding through an engaging learning experience.

**Highlights:** Explore atomic structure (protons, neutrons, electrons), Understand valence electrons and covalent bonding, Visualize how atoms form molecules, Interactive exploration of molecular structures, Learn about the properties of elements and the periodic table

**In-app purchases:** none


### Photronium

[App page](https://appshunter.io/ios/app/photronium-physics-equations/id1546383517)

Access over 360 physics equations with clear explanations and powerful search tools. Test your knowledge with custom quizzes and learn offline anywhere, anytime. This educational reference is designed for learners of all levels.

**Highlights:** 360+ physics equations, Offline access, Intelligent Search, Symbol Search, Customizable quizzes, Bookmarking

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multicolored Bookmarks | $0.99 | one-time |


## Frequently asked questions

### Is AtomicTiles free?

AtomicTiles costs $3.99, with no in-app purchases.

### Is Photronium free?

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

### Which has better reviews, AtomicTiles or Photronium?

AtomicTiles and Photronium are both rated 5.0 out of 5 on the App Store, from 1 and 8 ratings respectively.

### Do AtomicTiles or Photronium have ads?

Neither AtomicTiles nor Photronium shows ads.

### Which is updated more often, AtomicTiles or Photronium?

AtomicTiles ships an update every 19 months, and Photronium monthly. Most recently, AtomicTiles was updated on September 25, 2026 and Photronium on September 18, 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.*