# Photronium vs Mastering Physics

The clearest difference is in-app purchases: Mastering Physics at none against Photronium's 1. Photronium's advantage is update cadence (monthly vs every 12 months) and iOS requirement (16.4 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Photronium sells 1 one-off in-app purchase. Mastering Physics asks for nothing beyond the download.

Photronium ships an update monthly, Mastering Physics every 12 months. The most recent releases landed on September 18, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Photronium | Mastering Physics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/photronium-physics-equations/id1546383517/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 12 months |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 14 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hao Nguyen](https://appshunter.io/developer/1546383519) | [DEEPPATH LLC](https://appshunter.io/developer/1531915855) |

## What reviewers say

### 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 |


### Mastering Physics

[App page](https://appshunter.io/ios/app/mastering-physics/id6468366090)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Photronium free?

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

### Is Mastering Physics free?

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

### Do Photronium or Mastering Physics have ads?

Neither Photronium nor Mastering Physics shows ads.

### Which is updated more often, Photronium or Mastering Physics?

Photronium ships an update monthly, and Mastering Physics every 12 months. Most recently, Photronium was updated on September 18, 2026 and Mastering Physics on September 11, 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.*