# CNC Machinist Calculator + — Speeds, Feeds & Tap Drill

> Speeds, Feeds & Tap Drill (iPhone/iPad app by heekyung moon.)

- Source: https://appshunter.io/ios/app/cnc-machinist-calculator-plus/id6790015946 (this page in markdown: same URL + `.md`)
- Developer: [heekyung moon](https://appshunter.io/developer/6779193748)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 17+
- Requires: iOS 16.4 · 53 MB
- Languages: American English
- Released: 2026-07-20
- Data updated: 2026-08-11
- User reviews in markdown: https://appshunter.io/ios/app/cnc-machinist-calculator-plus/id6790015946/reviews.md

## What is CNC Machinist Calculator +?

▶ Every shop calc in one app. Get speeds and feeds, tap drill sizes and bolt-circle coordinates without flipping through charts or paying for a locked-up tool.

▶ Speeds & feeds, both ways. Pick a material and enter tool diameter and flute count for RPM, cutting speed and feed rate — or work it backward from RPM. Switch imperial and metric anytime.

▶ Tap drill in seconds. Choose a metric or unified thread and get the tap drill size with the nearest standard drill, plus a thread-percentage slider for tight or loose fits.

▶ Bolt circle coordinates. Enter hole count, diameter and start angle for an X/Y table you can copy row by row straight into the control, with a quick preview.

▶ Reference built in: material speed presets, a number/letter/fraction/metric drill chart, point-depth and surface-finish cards.

Recommended speeds are a starting point, not a final spec. Tune to your machine, tooling and material, and follow your tooling maker's data.


## Version history (last 5 releases)

### 1.3.3 — 2026-08-06

Alerts now arrive properly on Android instead of landing silently, and the app no longer interrupts you in the middle of what you came to do.

### 1.3.1 — 2026-08-03

Performance improvements, bug fixes, and refinements for the latest iOS.

### 1.1.2 — 2026-07-30

Performance improvements, bug fixes, and refinements for the latest iOS.

### 1.1.1 — 2026-07-29

Performance improvements, bug fixes, and refinements for the latest iOS.

### 1.1 — 2026-07-28

Performance improvements, bug fixes, and refinements for the latest iOS.

## More apps by heekyung moon

- [Blur & Mosaic Privacy](https://appshunter.io/ios/app/blur-and-mosaic-privacy/id6779193648)
- [Aurora Northern Lights](https://appshunter.io/ios/app/aurora-northern-lights/id6779193746)
- [Golden Hour Sun Tracker](https://appshunter.io/ios/app/golden-hour-sun-tracker/id6779194270)
- [GIF Maker & Editor Studio](https://appshunter.io/ios/app/gif-maker-and-editor-studio/id6779194430)
- [Slow Shutter Long Exposure](https://appshunter.io/ios/app/slow-shutter-long-exposure/id6780141566)
- [Rain Alert Nowcast](https://appshunter.io/ios/app/rain-alert-nowcast/id6780142286)

All apps by heekyung moon: https://appshunter.io/developer/6779193748

## Related topics

[machinist pocket pal](https://appshunter.io/ios/topics/machinist-pocket-pal) · [machinist calculator](https://appshunter.io/ios/topics/machinist-calculator)

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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 2026-08-11.*