# Trigonometry Calc vs CNC VMC Simulator

The clearest difference is price: Trigonometry Calc at Free against CNC VMC Simulator's $9.99. CNC VMC Simulator's advantage is review sentiment (42% vs 0%) and in-app purchases (none vs 1). On rating, update cadence, device support and iOS requirement there is nothing between them.

Trigonometry Calc is free to download; CNC VMC Simulator costs $9.99 up front. Trigonometry Calc sells 1 one-off in-app purchase. CNC VMC Simulator asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.0 for Trigonometry Calc against 2.9 for CNC VMC Simulator. Both are backed by a comparable volume of ratings — 2 and 9 respectively. Written reviews are what separate them: 0% of Trigonometry Calc's written reviews are positive against 42% of CNC VMC Simulator's.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 11, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Trigonometry Calc | CNC VMC Simulator |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/trigonometry-calc-triangles/id1306864057/reviews)** | [2.9 (9 ratings)](https://appshunter.io/ios/app/cnc-vmc-simulator/id1614666556/reviews) |
| Number of ratings | 2 | **9** |
| Positive reviews | 0.0% of reviews | **41.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 8 MB | 43 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bo Kalvslund](https://appshunter.io/developer/572272193) | [旭 陈](https://appshunter.io/developer/6780413573) |

## What reviewers say

### Trigonometry Calc

[App page](https://appshunter.io/ios/app/trigonometry-calc-triangles/id1306864057)

Calculate side lengths and angles in right-angled triangles using Pythagorean theorem and trigonometry functions. Learn basic trigonometry concepts. An optional premium version removes ads and unlocks a general triangle calculator.

**Highlights:** Calculate side lengths, Calculate angles, Pythagorean Theorem, Trigonometry functions, Learn simple trigonometry, General triangle calculator (premium)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | one-time |


### CNC VMC Simulator

[App page](https://appshunter.io/ios/app/cnc-vmc-simulator/id1614666556)

This app simulates CNC milling machine operations, allowing users to program and visualize tool paths in 3D. It helps beginners understand G-code programming for mechanical engineering.

**Highlights:** G-code programming editor, 3D tool path visualization, Control program execution, Geometric tool parameter settings, Machined surface visualization, G-code reference guide

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

**In-app purchases:** none


## Frequently asked questions

### Is Trigonometry Calc free?

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

### Is CNC VMC Simulator free?

CNC VMC Simulator costs $9.99, with no in-app purchases.

### Which has better reviews, Trigonometry Calc or CNC VMC Simulator?

Trigonometry Calc is rated higher. Trigonometry Calc averages 3.0 out of 5 from 2 ratings, while CNC VMC Simulator averages 2.9 from 9 ratings.

### Do Trigonometry Calc or CNC VMC Simulator have ads?

Trigonometry Calc shows ads; CNC VMC Simulator does not.

### Which is updated more often, Trigonometry Calc or CNC VMC Simulator?

Trigonometry Calc ships an update every 3 months, and CNC VMC Simulator every 3 months. Most recently, Trigonometry Calc was updated on November 11, 2026 and CNC VMC Simulator on November 12, 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.*