# Bench Math: CNC Calculator — Tap drill, feeds, cut lists

> Tap drill, feeds, cut lists (iPhone/iPad app by Guillaume RATOUCHNIAK.)

- Source: https://appshunter.io/ios/app/bench-math-cnc-calculator/id6814120682 (this page in markdown: same URL + `.md`)
- Developer: [Guillaume RATOUCHNIAK](https://appshunter.io/developer/6788773012)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 1 MB
- Languages: American English, French (France), Japanese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-09-29
- Data updated: 2026-10-01
- User reviews in markdown: https://appshunter.io/ios/app/bench-math-cnc-calculator/id6814120682/reviews.md

## What is Bench Math?

Bench Math is the arithmetic of a working shop, on your phone, with no signal needed.

Ten tools built for machinists, metal fabricators and woodworkers. No account, no subscription, no internet.

FREE, COMPLETE, NO PURCHASE NEEDED
• Tap & Drill: the right drill for common UNC, UNF and ISO metric threads, at any thread engagement, chosen from the drill sets you actually own, plus clearance holes
• Board Feet: timber volume and cost, with the quarter sizes yards quote
• Right Triangle: solve from any two knowns, for miters, rise and run, bracing

BENCH MATH PRO, ONE PAYMENT
• Speeds & Feeds: RPM, feed rate and chip load for 16 materials, including the radial chip thinning correction that most charts leave out
• Cut List, linear: nest parts into bar and board stock, kerf accounted for
• Cut List, sheet: kerf-aware, grain-aware nesting for plywood and panels, with a cutting diagram
• Bend Allowance: flat patterns with K-factor, bend deduction, outside setback
• Bolt Circle: X and Y for every hole, ready for a DRO or a G-code file
• Belt & Pulley: belt length, ratio and the wrap angle that decides slip
• Gear Train: compound ratios, output speed and torque
• Saved projects, and PDF or CSV export to hand to whoever is at the saw

BUILT FOR THE SHOP
• Works fully offline. Nothing is uploaded, because there is no server
• Type fractions the way you write them: 3 1/2, 3-1/2, 7/8, or decimals
• Imperial or metric, following your region, and switchable any time
• Answers update as you type. No calculate button, no ads
• In English, French, Spanish, Japanese and Chinese

HONEST ABOUT WHAT IT IS
Speeds, feeds and K-factors are starting points, not specifications. They move with your tooling, your machine and your material. The screens that give those values say so, and tell you to try a test cut or a test bend first.

Bench Math Pro is a one-time purchase, not a subscription. Family Sharing is on.

Privacy Policy: https://benchmath-website.vercel.app/privacy
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Bench Math Pro | $5.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-09-29

No release notes.

## More apps by Guillaume RATOUCHNIAK

- [Nudge: Countdown with Friends](https://appshunter.io/ios/app/nudge-countdown-with-friends/id6788773010)
- [Runs Out: Expiry Tracker](https://appshunter.io/ios/app/runs-out-expiry-tracker/id6798293086)
- [Nomad Traveler: Visa Limit](https://appshunter.io/ios/app/nomad-traveler-visa-limit/id6799671436)
- [Knock: for one person](https://appshunter.io/ios/app/knock-for-one-person/id6799983096)

All apps by Guillaume RATOUCHNIAK: https://appshunter.io/developer/6788773012

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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 2026-10-01.*