# CNC Tool Setup Calculator — Tool height and radius, fast

> Tool height and radius, fast (iPhone/iPad app by GYEONGHWAN PARK.)

- Source: https://appshunter.io/ios/app/cnc-tool-setup-calculator/id6790075687 (this page in markdown: same URL + `.md`)
- Developer: [GYEONGHWAN PARK](https://appshunter.io/developer/6786929694)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 43 MB
- Languages: American English
- Released: 2026-08-24
- Data updated: 2026-10-09

## What is CNC Tool Setup Calculator?

CNC Tool Setup Calculator is a fast, offline calculator for tool setup at the machine.

Enter a tool height and radius, and it gives you the value to type into the control - with the machine's Surrogate added automatically when one is installed. A Surrogate is a measured length that is added to every tool on that machine while it stays installed. No more re-deriving the same number, and no more forgetting whether it is on.

BUILT FOR THE SHOP FLOOR
- Large keypad and result display, readable at arm's length
- One-handed operation, portrait only
- Works entirely offline - no account, no sign-in, no network
- Every length shown to four decimal places, in inches

PER-MACHINE SURROGATE TRACKING
Each machine remembers whether its Surrogate is installed, its current measurement, when it was measured, and its full history. Height to Enter is the tool height alone when the Surrogate is removed or the machine has none, and tool height plus the current Surrogate when it is installed. A removed Surrogate value is never silently reused.

TOOL PRESETS, OR ENTER YOUR OWN
Pick from built-in presets for common cutter geometries - ball and lollipop endmills, bull endmills with corner radii, high-feed cutters, barrel cutters, and flat endmills, drills and taps at zero radius. Or choose Other / Manual and type any tool height and radius yourself.

CALCULATION HISTORY
Keeps up to 1,000 saved setups. Reuse a past setup with one tap - it keeps your current machine and never restores a historical Surrogate value.

ACCESSIBILITY
Full VoiceOver support with real unit announcements, haptic feedback on key presses, and glove-friendly touch targets.

SAFETY
This app assists with tool setup calculations. Always verify Tool Height, Radius, machine configuration, and workplace procedures before entering values into a CNC control.

PRIVACY
Everything stays on your iPhone. The app has no accounts, no cloud sync, no analytics, and makes no network requests of its own. The full privacy and safety notice is readable inside the app under Settings.

## Is CNC Tool Setup Calculator safe?

Not enough ratings yet to assess CNC Tool Setup Calculator.

## Is CNC Tool Setup Calculator legit?

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


## Version history (last 1 release)

### 1.2.0 — 2026-08-24

No release notes.

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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 2026-10-09.*