# Photronium vs Physics Lessons,Topics

The clearest difference is ads: Photronium at none against Physics Lessons,Topics's shown. Photronium also leads on update cadence (monthly vs every 2 months). Physics Lessons,Topics's advantage is iOS requirement (12.0 vs 16.4). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Photronium sells 1 one-off in-app purchase and Physics Lessons,Topics sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Photronium against 5.0 for Physics Lessons,Topics. Both are backed by a comparable volume of ratings — 10 and 7 respectively.

Photronium ships an update monthly, Physics Lessons,Topics every 2 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Photronium | Physics Lessons,Topics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (10 ratings)](https://appshunter.io/ios/app/photronium-physics-equations/id1546383517/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/physics-lessonstopics/id6751053588/reviews) |
| Number of ratings | **10** | 7 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 59 MB | 39 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hao Nguyen](https://appshunter.io/developer/1546383519) | [Ali Umer](https://appshunter.io/developer/1584417594) |

## 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 |


### Physics Lessons,Topics

[App page](https://appshunter.io/ios/app/physics-lessonstopics/id6751053588)

Master physics concepts with this comprehensive study companion. It offers detailed definitions, step-by-step explanations, formulas, quizzes, and flashcards for over 200 topics. Learn at your own pace, track progress, and study offline.

**Highlights:** 200+ physics topics covered, Detailed definitions and explanations, Practice quizzes with instant feedback, Flashcards for efficient memorization, Progress tracking, Offline access

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Physics Lessons | $4.99 | per 7 days |
| Physics Lessons | $6.99 | per month |
| Physics Lessons | $29.99 | per year |
| Physics Lessons | $49.99 | one-time |


## Frequently asked questions

### Is Photronium free?

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

### Is Physics Lessons,Topics free?

Physics Lessons,Topics is free to download, with in-app purchases available.

### Which has better reviews, Photronium or Physics Lessons,Topics?

Photronium and Physics Lessons,Topics are both rated 5.0 out of 5 on the App Store, from 10 and 7 ratings respectively.

### Do Photronium or Physics Lessons,Topics have ads?

Physics Lessons,Topics shows ads; Photronium does not.

### Which is updated more often, Photronium or Physics Lessons,Topics?

Photronium ships an update monthly, and Physics Lessons,Topics every 2 months. Most recently, Photronium was updated on October 23, 2026 and Physics Lessons,Topics on October 24, 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.*