# Visual Trig Func vs Crystal Lattice

The clearest difference is review sentiment: Crystal Lattice at 100% against Visual Trig Func's 61%. Crystal Lattice also leads on in-app purchases (none vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Visual Trig Func sells 1 one-off in-app purchase. Crystal Lattice asks for nothing beyond the download.

Visual Trig Func ships an update every 5 months, Crystal Lattice every 8 months. The most recent releases landed on June 1, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | Visual Trig Func | Crystal Lattice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/visual-trig-func/id645214237/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 61.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 5 months** | Every 8 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 4 MB | 9 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [yukihiro fujita](https://appshunter.io/developer/537078708) | [Yasuyoshi Ota](https://appshunter.io/developer/1500357652) |

## 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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add Calculation 360!   (You can calc trig functions for over 90 degrees.) | $0.99 | one-time |


### Crystal Lattice

[App page](https://appshunter.io/ios/app/crystal-lattice/id6466785450)

Explore 3D crystal lattice structures with interactive scaling and rotation. Learn to calculate key properties for various crystal types, including metal, ionic, and covalent. Ideal for understanding complex atomic arrangements.

**Highlights:** Interactive 3D crystal lattice models, Scale and rotate structures, Calculate coordination number, Calculate number of atoms/ions, Atomic packing factor calculation, Explanations for various crystal types

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

**In-app purchases:** none


## Frequently asked questions

### Is Visual Trig Func free?

Visual Trig Func is free to download, with in-app purchases available.

### Is Crystal Lattice free?

Crystal Lattice is free to download, with no in-app purchases.

### Do Visual Trig Func or Crystal Lattice have ads?

Both Visual Trig Func and Crystal Lattice show ads.

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

Visual Trig Func ships an update every 5 months, and Crystal Lattice every 8 months. Most recently, Visual Trig Func was updated on June 1, 2026 and Crystal Lattice on August 31, 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.*