# Visual Trig Func vs Photronium

The clearest difference is rating: Photronium at 5.0 against Visual Trig Func's 1.0. Photronium also leads on review sentiment (100% vs 61%) and ads (none vs shown). Visual Trig Func's advantage is iOS requirement (14.0 vs 16.4). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Visual Trig Func 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 1.0. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews point the same way: 61% of Visual Trig Func's written reviews are positive against 100% of Photronium's.

Visual Trig Func ships an update every 5 months, Photronium monthly. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Visual Trig Func | Photronium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/visual-trig-func/id645214237/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/photronium-physics-equations/id1546383517/reviews)** |
| Number of ratings | 2 | **8** |
| Positive reviews | 61.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 4 MB | 59 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [F-NET Apps](https://appshunter.io/developer/537078708) | [Hao Nguyen](https://appshunter.io/developer/1546383519) |

## What reviewers say

### Visual Trig Func

[App page](https://appshunter.io/ios/app/visual-trig-func/id645214237)

This app visually demonstrates trigonometric functions, making them easier to understand and calculate. It offers interactive tools for exploring values, viewing wave graphs, and accessing lists of trigonometric ratios. Ideal for students and educators seeking a clearer grasp of trigonometry.

**Highlights:** Visual trigonometric functions, Interactive radius and angle manipulation, Comprehensive lists of trig ratios, Wave graph visualizations, Adjustable values via text fields, Tap-to-check degree and value functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add Calculation 360!   (You can calc trig functions for over 90 degrees.) | $0.99 | 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 Visual Trig Func free?

Visual Trig Func 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, Visual Trig Func or Photronium?

Photronium is rated higher. Visual Trig Func averages 1.0 out of 5 from 2 ratings, while Photronium averages 5.0 from 8 ratings.

### Do Visual Trig Func or Photronium have ads?

Visual Trig Func shows ads; Photronium does not.

### Which is updated more often, Visual Trig Func or Photronium?

Visual Trig Func ships an update every 5 months, and Photronium monthly. Most recently, Visual Trig Func was updated on October 4, 2026 and Photronium on October 6, 2026.

---

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