# Photronium vs Engineering Physics Quiz

The clearest difference is ads: Photronium at none against Engineering Physics Quiz's shown. Engineering Physics Quiz's advantage is iOS requirement (12.0 vs 16.4). On price, update cadence, in-app purchases and device support there is nothing between them.

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

Photronium ships an update monthly, Engineering Physics Quiz every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Photronium | Engineering Physics Quiz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/photronium-physics-equations/id1546383517/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 68 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hao Nguyen](https://appshunter.io/developer/1546383519) | [Arshad Iqbal](https://appshunter.io/developer/1547001151) |

## 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 |


### Engineering Physics Quiz

[App page](https://appshunter.io/ios/app/engineering-physics-quiz/id1583491819)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month Package | $4.99 | per month |
| 3 Months Package | $9.99 | per 3 months |
| 6 Months Package | $14.99 | per 6 months |
| 1 Year Package | $19.99 | per year |
| 1500 Coins | $0.99 | one-time |
| 3500 Coins | $1.99 | one-time |
| 6000 Coins | $2.99 | one-time |


## Frequently asked questions

### Is Photronium free?

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

### Is Engineering Physics Quiz free?

Engineering Physics Quiz is free to download, with in-app purchases available.

### Do Photronium or Engineering Physics Quiz have ads?

Engineering Physics Quiz shows ads; Photronium does not.

### Which is updated more often, Photronium or Engineering Physics Quiz?

Photronium ships an update monthly, and Engineering Physics Quiz every 3 weeks. Most recently, Photronium was updated on November 3, 2026 and Engineering Physics Quiz on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*