# Math Dictionary Offline vs Photronium

The clearest difference is review sentiment: Photronium at 100% against Math Dictionary Offline's 50%. Photronium also leads on rating (5.0 vs 4.0) and ads (none vs shown). Math Dictionary Offline's advantage is monetization model (free vs free with in-app purchases). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Math Dictionary Offline sells 1 one-off in-app purchase and Photronium sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Photronium holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Photronium has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Math Dictionary Offline's written reviews are positive against 100% of Photronium's.

Math Dictionary Offline ships an update every 60 months, Photronium monthly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Math Dictionary Offline | Photronium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/math-dictionary-offline/id1172217680/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/photronium-physics-equations/id1546383517/reviews)** |
| Number of ratings | 2 | **10** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 60 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 59 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Putranto](https://appshunter.io/developer/1097285857) | [Hao Nguyen](https://appshunter.io/developer/1546383519) |

## What reviewers say

### Math Dictionary Offline

[App page](https://appshunter.io/ios/app/math-dictionary-offline/id1172217680)

Access a comprehensive collection of mathematical terms and definitions without an internet connection. This free application allows you to search for specific words alphabetically or by using the built-in search tool. It's ideal for students and anyone needing quick math reference on the go.

**Highlights:** Offline access, Extensive math vocabulary, Completely free, Alphabetical listing, Search tool

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### 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 Math Dictionary Offline free?

Math Dictionary Offline is free to download, with in-app purchases available.

### Is Photronium free?

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

### Which has better reviews, Math Dictionary Offline or Photronium?

Photronium is rated higher. Math Dictionary Offline averages 4.0 out of 5 from 2 ratings, while Photronium averages 5.0 from 10 ratings.

### Do Math Dictionary Offline or Photronium have ads?

Math Dictionary Offline shows ads; Photronium does not.

### Which is updated more often, Math Dictionary Offline or Photronium?

Math Dictionary Offline ships an update every 60 months, and Photronium monthly. Most recently, Math Dictionary Offline was updated on November 6, 2026 and Photronium 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.*