# LatheCalcPro — CNC Lathe Calculator

> CNC Lathe Calculator (iPhone/iPad app by 瑞龙 栗.)

- Source: https://appshunter.io/ios/app/lathecalcpro/id6801366781 (this page in markdown: same URL + `.md`)
- Developer: [瑞龙 栗](https://appshunter.io/developer/1882574183)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 15 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-09-02
- Data updated: 2026-10-18

## What is LatheCalcPro?

Built for the shop floor — not the desk.

LatheCalc Pro is a professional offline calculator for CNC lathe operators, programmers, and machinists. No account, no network, no data upload. ISO standard tables and calculation engines are built in, so you can look up specs and run numbers even when signal is weak.

CUT POINTS
Browse T01–T42 contour templates with clear diagrams. Supported models solve tangent coordinates, apply tool-nose radius compensation, and output G-code references — less manual math, fewer copy errors.

METRIC THREADS
ISO 261 diameter–pitch lookup (M1–M100). Theoretical profile sizes per ISO 68-1 / ISO 724. Coarse and fine pitches, custom geometry mode for non-standard profiles.

TOLERANCE & FITS
ISO 286 hole and shaft tolerances, standard fits (e.g. H7/g6), and manual deviation entry. Tolerance-band visualization helps you read drawings faster.

SURFACE SPEED / RPM
Convert between cutting speed and spindle speed from work diameter. Metric and imperial units. Optional machine max-RPM warning when results exceed your limit.

CHAMFER & TAPER
Multiple solve modes for known dimension combinations. Diameter/radius input toggle. Taper per ISO 3040 with clear full-angle (α) vs half-angle (β) handling.

WHY LATHECALC PRO
• Fully offline — standards and engine bundled in the app
• Shop-friendly — large numeric keypad, glove-friendly layout
• History & favorites — reuse inputs in one tap
• English & Chinese — UI and diagrams
• Traceable results — solver version, standard pack, and input summary
• Flexible settings — units, X diameter/radius mode, display precision

FOR
CNC lathe operators, process engineers, programmers, and machining students who need fast ISO lookups and reliable field calculations.

## Is LatheCalcPro safe?

Not enough ratings yet to assess LatheCalcPro.

## Is LatheCalcPro legit?

LatheCalcPro has limited verification signals. The AppsHunter Legitimacy Score for LatheCalcPro is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.2 — 2026-10-18

Added a login feature, allowing users to save their calculation history.

### 1.0 — 2026-09-02

No release notes.

## More apps by 瑞龙 栗

- [SportWeather:ReadySet](https://appshunter.io/ios/app/sportweatherreadyset/id6762073392)

All apps by 瑞龙 栗: https://appshunter.io/developer/1882574183

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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 2026-10-18.*