# Trigonometry calc vs CNC Lathe Simulator

The clearest difference is review sentiment: CNC Lathe Simulator at 55% against Trigonometry calc's 0%. CNC Lathe Simulator also leads on rating (4.2 vs 3.0) and in-app purchases (none vs 1). Trigonometry calc's advantage is price (Free vs $6.99). On device support and iOS requirement there is nothing between them.

Trigonometry calc is free to download; CNC Lathe Simulator costs $6.99 up front. Trigonometry calc sells 1 one-off in-app purchase. CNC Lathe Simulator asks for nothing beyond the download.

CNC Lathe Simulator holds the better App Store score, 4.2 against 3.0. That said, the two scores are not equally well evidenced: CNC Lathe Simulator has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Trigonometry calc's written reviews are positive against 55% of CNC Lathe Simulator's.

Trigonometry calc ships an update every 3 months, CNC Lathe Simulator monthly. The most recent releases landed on September 6, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Trigonometry calc | CNC Lathe Simulator |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/trigonometry-calc/id1306864057/reviews) | **[4.2 (14 ratings)](https://appshunter.io/ios/app/cnc-lathe-simulator/id1499085878/reviews)** |
| Number of ratings | 2 | **14** |
| Positive reviews | 0.0% of reviews | **54.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 10 MB | 54 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/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 Lathe Simulator

[App page](https://appshunter.io/ios/app/cnc-lathe-simulator/id1499085878)

This educational tool simulates a CNC lathe for beginners in machine building. It allows users to learn G-code programming for turning operations with 3D visualization of tool movements and workpiece processing. Ideal for students and distance learning in metallurgy and engineering.

**Highlights:** G-code programming for turning operations, 3D simulation of lathe and tool movements, Workpiece surface visualization, Control program file management, Cutting tool geometric parameter setup, Continuous and step-by-step program execution, 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 Lathe Simulator free?

CNC Lathe Simulator costs $6.99, with no in-app purchases.

### Which has better reviews, Trigonometry calc or CNC Lathe Simulator?

CNC Lathe Simulator is rated higher. Trigonometry calc averages 3.0 out of 5 from 2 ratings, while CNC Lathe Simulator averages 4.2 from 14 ratings.

### Do Trigonometry calc or CNC Lathe Simulator have ads?

Trigonometry calc shows ads; CNC Lathe Simulator does not.

### Which is updated more often, Trigonometry calc or CNC Lathe Simulator?

Trigonometry calc ships an update every 3 months, and CNC Lathe Simulator monthly. Most recently, Trigonometry calc was updated on September 6, 2026 and CNC Lathe Simulator on September 23, 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.*