# Lathe Calculator: CNC Tool — CNC Macro Program Generator

> CNC turning calculator and macro program generator for efficient machining. (iPhone/iPad app by 惟 陈.)

- Source: https://appshunter.io/ios/app/lathe-calculator-cnc-tool/id6765566579 (this page in markdown: same URL + `.md`)
- Developer: [惟 陈](https://appshunter.io/developer/1584601883)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 24 MB
- Languages: American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-05-06
- Data updated: 2026-09-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/lathe-calculator-cnc-tool/id6765566579/reviews.md

## What is Lathe Calculator?

Lathe Calculator is an efficiency tool designed specifically for CNC turning. Its core goal is to help you calculate parameters faster, generate programs quicker, and reduce errors.

Key Features

1. Thread Calculation: Supports metric, imperial, and unified threads, with automatic output of key dimensions and reference G76 programs.
2. Taper Calculation: Covers common scenarios including large/small diameters, taper angles, and Morse tapers.
3. Tolerance & Fit: Quickly check hole/shaft tolerances and determine clearance or interference fits.
4. Arc Tangency Points: Assists with arc transitions and precise cutting point positioning.
5. Macro Programming Assistant: Includes common profiles and machining templates.
6. Additional Utilities: Chamfering, surface speed conversion, weight and material density calculations, and more.

Efficiency Features

1. Save and reuse parameters with one tap to reduce repetitive input.
2. Built-in program library for storing and managing commonly used code.
3. Clear and structured results for quick on-site verification and adjustment.

Suitable for machinists, CNC programmers, mechanical engineers, and learners in daily use.

## Key features

- Thread calculation (metric, imperial, unified)
- Taper calculation
- Tolerance and fit analysis
- Arc tangency point calculation
- Macro programming assistant
- Save and reuse parameters
- Built-in program library

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Unlock | $4.99 | one-time |


## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/lathe-calculator-cnc-tool/id6765566579/reviews.md

### 2/5 — 圆弧切点

*2026-08-26*

圆弧切点计算没有图形参考

**Developer response:** 有需求可以在app内部提，别给2⭐啊

### 5/5 — 好用

*2026-07-12*

很推荐

### 5/5 — 角度计算

*2026-07-12*

一些特定的螺纹角度用这个软件计算出来问题解决了非常感谢

**Developer response:** 非常感谢您的认可！后续有任何需求都可以通过App内联系我们

### 5/5 — 不错👍

*2026-06-23*

希望越来越强大

### 5/5 — 车床神器

*2026-06-09*

不错，很好用，比以前的那些实用

### 5/5 — 不错

*2026-05-22*

不错

### 4/5 — 非常合适入门

*2026-05-18*

简单又好用，在细一点就好了

**Developer response:** 感谢您的反馈,我们会持续优化APP

### 5/5 — 1

*2026-05-17*

可以很好用

### 5/5 — 好用不错可以免费解锁

*2026-05-10*

推荐下载非常不错的软件

## Frequently asked questions about Lathe Calculator

### What types of threads can Lathe Calculator handle?

Lathe Calculator supports metric, imperial, and unified threads. It automatically outputs key dimensions and can generate reference G76 programs for these thread types.

### How does Lathe Calculator assist with tapers?

The app covers common taper scenarios, including calculations for large and small diameters, taper angles, and Morse tapers, simplifying complex geometry.

### Can Lathe Calculator help with tolerances and fits?

Yes, it allows you to quickly check hole and shaft tolerances and determine whether a clearance or interference fit is appropriate for your application.

### Does Lathe Calculator have ads?

No, Lathe Calculator does not contain advertisements. It is a free application with optional in-app purchases.

### How often is Lathe Calculator updated?

The latest version, 2.0, was released on August 17, 2026. Updates are provided to ensure the app remains current and functional.

### On which devices can I use Lathe Calculator?

Lathe Calculator is available for both iPhone and iPad devices, offering flexibility for users across Apple's mobile ecosystem.

### What is the age rating for Lathe Calculator?

Lathe Calculator has an age rating of 4+, making it suitable for a wide range of users, including younger learners in technical fields.

### What are the benefits of the in-app purchases for Lathe Calculator?

While the core functionality is free, in-app purchases likely offer advanced features or expanded content, providing additional value for users who need more specialized tools.

## Version history (last 5 releases)

### 2.3 — 2026-08-25

- bug fix

### 2.2 — 2026-08-24

What’s New in Version 2.2:
• Redesigned Other Calculations with quick top-level access to unit conversion, tool life estimation, coolant mixing, and eccentric turning alignment.
• Expanded macro programming with new templates for compound contours, internal profiles, hourglass contours, thread relief grooves, multi-start helical grooves, and variable-lead threading.
• Improved knurling and figure-eight oil groove calculations with clearer validation, previews, and safety guidance.
• Upgraded the program library with machining categories, CNC controller filters, improved search by name, type, and G-code, plus more commonly used programs.
• Enhanced arc diagrams with continuous tangent arcs, tool-nose compensation, clearer coordinate annotations, and improved 3D previews.
• Simplified selected inputs and navigation while improving localization, accessibility, and compatibility with existing data.
• Fixed known issues and improved overall stability.

### 2.1 — 2026-08-21

Version 2.1 release notes:

1. New first-run setup guide: configure your CNC system and unit preferences in 4 simple steps — change them anytime in Settings.
2. Arc tangent calculator upgraded: a new geometry diagram visualizes the relationship between angle, taper and cutting geometry for clearer results.
3. Fixed taper direction calculation in G71/G72 roughing cycles for more accurate program generation.

### 2.0 — 2026-08-17

Version 2.0 release notes:
1. Major upgrade to CNC program generation: new draft programs for G92/G32 multi-start threading, G81/G83 drilling & boring, G96 constant surface speed, G71/G72/G73 rough & finish turning cycles, G74/G75 grooving & cutoff, and G90/G94 common cycles — covering core turning operations.
2. Enhanced thread calculation: full ISO 965 tolerance-band lookup, plus new trapezoidal thread (Tr/ACME) calculation with pass-by-pass program drafts.
3. Safer knurling: improved Q-value indexing with safety checks to prevent over-cutting.
4. New offline reference library: G/M code quick reference, insert & tool holder lookup with real product photos, and a G41/G42 tool radius compensation direction guide.
5. Program safety first: programs not yet validated for your controller are shown as drafts with a reminder to dry-run and single-block verify before machining.
6. Improved member experience: home modules reordered by real-world turning frequency; VIP badge on macro programs; save, copy and export for G71/G72 rough-turning programs now available to members.

### 1.9 — 2026-08-09

• Added feedback history — review all your submitted feedback and replies anytime
• Unread badge on the feedback entry when you receive new replies
• Optimized the cross-hatch macro program with reciprocating G32 support for more accurate knurling output
• Bug fixes and stability improvements

## Apps similar to Lathe Calculator

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [车工计算器助手 - 车工计算与数控编程车床助手](https://appshunter.io/ios/app/id6761551237) | — | $2.99 | Utilities |
| [MC编程师](https://appshunter.io/ios/app/mc/id6740897460) | — | Free | Utilities |
| [CNC Lathe Calc Assistant](https://appshunter.io/ios/app/cnc-lathe-calc-assistant/id6763193358) | — | $0.99 | Utilities |
| [数控快算-车床编程助手](https://appshunter.io/ios/app/id6780174482) | — | $3.99 | Utilities |
| [CNC Simulation‑Handbook](https://appshunter.io/ios/app/cnc-simulationhandbook/id6779476155) | — | Free | Utilities |
| [Helix Angle Calculator](https://appshunter.io/ios/app/helix-angle-calculator/id6745720275) | — | Free | Utilities |

## More apps by 惟 陈

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All apps by 惟 陈: https://appshunter.io/developer/1584601883

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*