# ShopCalc: Machinist Calculator — Machinist Feeds, Speeds & Tap

> Offline machinist calculator for speeds, feeds, tap drill, threading, and G-code. (iPhone/iPad app by Double Vision USA LLC.)

- Source: https://appshunter.io/ios/app/shopcalc-machinist-calculator/id6762560427 (this page in markdown: same URL + `.md`)
- Developer: [Double Vision USA LLC](https://appshunter.io/developer/1894678139)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 1 MB
- Languages: American English
- Released: 2026-04-21
- Data updated: 2026-08-31
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/shopcalc-machinist-calculator/id6762560427/reviews.md

## What is ShopCalc?

The machinist calculator your shop uses every day — speeds and feeds, tap drill, threading, and conversational G-code, all offline.

Stop guessing your speeds and feeds. Stop hunting for the tap drill chart on a greasy notebook page. Stop typing G-code by hand for simple ops. ShopCalc puts every machinist calculation a tap or two away — fully offline, no account, no ads.

WHAT'S INSIDE

• Speeds & Feeds — RPM, SFM, IPM, IPR for any tool, any material
• Tap Drill — UNC, UNF, metric, full chart with class fits
• Threading — single-point thread cutting (60° UN, ISO metric, ACME)
• Drilling — peck schedules, point lengths, blind-hole depths
• Drill Chart — number, letter, fractional, metric — all sizes side-by-side
• Boring & Reaming — finish allowance and feed corrections
• G-Code Generators — facing, threading, drilling, simple OD/ID
• Bolt Circle Generator — XY points + canned cycle for any pattern
• Lathe Jaw Bore — soft-jaw boring cycles with spring-pass option
• G-Code Reference — quick lookup for G/M codes and program structure
• Conversions — feed/speed unit conversions, taper math
• Metal Weight — bar stock, plate, tube, by material and shape
• Surface Finish — Ra ↔ Rz, common roughness conversions
• Tool Library — save your shop's tools, pull settings instantly
• Reference — material hardness, common tap sizes, common drill sizes

WHO IT'S FOR

Manual machinists, CNC operators, programmers, apprentices, hobbyists. If you spend any time at a lathe, mill, or VMC, ShopCalc earns its place on your phone in the first week.

FREE vs PRO

Free forever: speeds & feeds, tap drill, threading, conversions, drill chart, G-code reference.
Pro unlocks G-code generators, bolt circle, jaw bore, tool library, metal weight, surface finish, and the full reference set. One-time purchase or subscription.

Subscriptions auto-renew until cancelled. Manage in your Apple ID Subscription Settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://doublevision.company/privacy

NO ACCOUNT. NO ADS. NO DATA COLLECTION.
ShopCalc works on the floor, in the cab, in a shielded plant. Everything runs locally.

## Key features

- Speeds & Feeds calculations
- Tap Drill chart and calculations
- Threading calculations
- G-Code Generators
- Bolt Circle Generator
- Metal Weight calculations
- Tool Library

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| ShopCalc Pro Monthly | $4.99 | per month |
| ShopCalc Pro Yearly | $19.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| ShopCalc Pro | $49.99 | one-time |
| Machine Shop Bundle | $119.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/shopcalc-machinist-calculator/id6762560427/reviews.md

### 5/5 — Great app!

*2026-05-03*

This is a great app for machinists. Love how quick and easy it is to calculate feeds and speeds. 👍🏻

## Frequently asked questions about ShopCalc

### What is ShopCalc?

ShopCalc is an offline machinist calculator designed for CNC operators and manual machinists. It provides tools for speeds and feeds, tap drill sizes, threading, G-code generation, and more, all without requiring an internet connection or account.

### What features are available in the free version of ShopCalc?

The free version of ShopCalc includes speeds & feeds, tap drill, threading, conversions, drill chart, and G-code reference. These core functionalities are available without any cost.

### How does the Pro version of ShopCalc differ from the free version?

The Pro version of ShopCalc unlocks advanced features such as G-code generators, bolt circle, jaw bore, tool library, metal weight, surface finish, and the full reference set. These features are available through a one-time purchase or subscription.

### Does ShopCalc have ads?

No, ShopCalc explicitly states that it has no ads. The app is designed to work offline and without any advertisements, ensuring an uninterrupted user experience.

### Is ShopCalc available on Android devices?

Based on the provided data, ShopCalc is supported on iPhone and iPad. Information regarding Android compatibility is not available in this data.

### How often is ShopCalc updated?

ShopCalc was last updated on June 23, 2026, with version 1.7.33. This indicates a recent update, suggesting ongoing development and support for the application.

### What is the user sentiment for ShopCalc?

ShopCalc has a perfect rating of 5.0 stars from 2 ratings, indicating very positive user sentiment. Users appear to be highly satisfied with the app's functionality and performance.

### Can I manage my ShopCalc subscription?

Yes, subscriptions for ShopCalc can be managed through your Apple ID Subscription Settings. Subscriptions auto-renew until cancelled, so it's important to manage them directly in your account settings.

## Version history (last 5 releases)

### 1.7.46 — 2026-08-22

New: pick your machine (Haas, Fanuc, LinuxCNC, GRBL, lathes and more) and G-code output is formatted for that control — correct tapping cycles, dwell format, and retract behavior per machine. Plus paywall display fixes on iPad and in dark mode.

### 1.7.45 — 2026-08-22

Clearer pricing and plan details, larger touch targets, and a refreshed, easier-to-read interface.

### 1.7.44 — 2026-08-21

Clearer pricing and plan details, larger touch targets, and a refreshed, easier-to-read interface.

### 1.7.43 — 2026-08-20

Clearer pricing: subscription options now show your free trial and the exact price you'll pay after it ends.

### 1.7.42 — 2026-08-19

Performance and reliability improvements.

## More apps by Double Vision USA LLC

- [WelderCalc: Welding Calculator](https://appshunter.io/ios/app/weldercalc-welding-calculator/id6763315264)
- [ElectricianCalc NEC Calculator](https://appshunter.io/ios/app/electriciancalc-nec-calculator/id6763315320)
- [BuilderCalc: Deck, Framing](https://appshunter.io/ios/app/buildercalc-deck-framing/id6763315412)
- [DutyDesk](https://appshunter.io/ios/app/dutydesk/id6776941078)
- [ShopCAM: CNC G-Code Generator](https://appshunter.io/ios/app/shopcam-cnc-g-code-generator/id6778277614)

All apps by Double Vision USA LLC: https://appshunter.io/developer/1894678139

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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 2026-08-31.*