# 程轨 vs LatheCalcPro

The clearest difference is price: LatheCalcPro at Free against 程轨's $2.99. LatheCalcPro also leads on update cadence (weekly vs monthly). 程轨's advantage is iOS requirement (13.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

LatheCalcPro is free to download; 程轨 costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

程轨 ships an update monthly, LatheCalcPro weekly. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 程轨 | LatheCalcPro |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lathecalcpro/id6801366781/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | — | Free |
| Size | 24 MB | 18 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [久燕 王](https://appshunter.io/developer/1896551289) | [瑞龙 栗](https://appshunter.io/developer/1882574183) |

## What reviewers say

### 程轨

[App page](https://appshunter.io/ios/app/g/id6794184799)

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

**In-app purchases:** none


### LatheCalcPro

[App page](https://appshunter.io/ios/app/lathecalcpro/id6801366781)

This app provides essential lathe calculations for machinists, CNC programmers, and manufacturing technicians. It simplifies tasks like thread dimensions, tolerances, cutting speeds, and feed rates, helping users save time and improve accuracy.

**Highlights:** Thread dimensions and parameters, Hole and shaft tolerances, Cutting speed and spindle speed conversion, Taper geometry calculations, Surface roughness estimation, Metric and imperial units, Calculation history and favorites

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

**In-app purchases:** none


## Frequently asked questions

### Is 程轨 free?

程轨 costs $2.99, with no in-app purchases.

### Is LatheCalcPro free?

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

### Do 程轨 or LatheCalcPro have ads?

Neither 程轨 nor LatheCalcPro shows ads.

### Which is updated more often, 程轨 or LatheCalcPro?

程轨 ships an update monthly, and LatheCalcPro weekly. Most recently, 程轨 was updated on November 6, 2026 and LatheCalcPro on November 7, 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.*