Mr. Machinist vs CNC · G
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mr. Machinist
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Welcome to Mr. Machinist – The simple, down-to-earth shop calculator app built for CNC programming, machine setups, part inspection, and manual machining. Whether you’ve been running parts on the shop floor for six months or thirty years, this app helps you double-check your blueprints, nail your angles, optimize CNC speeds and feeds, and keep from scrapping expensive material. The math formulas and shop math shortcuts built into this app aren't new—shop hands have relied on these core engineering setups for decades. But instead of flipping through grease-stained reference books or scratching numbers on a piece of cardboard, Mr. Machinist revamps those time-tested shop methods into a clean, modern app that fits right in your pocket. The author behind the app has spent 46 years in manufacturing, precision machining, and aerospace quality inspection, running into the exact same blueprint headaches you face every day. This app is a practical way to pass those everyday shop-floor solutions down to the next generation of operators looking to sharpen their skills, master CNC setups, pass part inspections, and learn how to get hired at top shops. No confusing engineering jargon required—just punch in your numbers and get accurate blueprint answers instantly. -------------------------------------------------- EVERYDAY SHOP TOOLS INCLUDED -------------------------------------------------- Mr. Machinist gives you an easy-to-use set of calculators to handle the math you face at your workbench every single day: • EASY SHOP GEOMETRY: Quickly figure out right triangle math, tapers, bolt-hole circle patterns, and trigonometry without digging through old textbooks. • SPEEDS & FEEDS SUITE: Optimize your machine tool parameters instantly. Calculate rotational surface speeds (SFM) and linear feed-rates (IPM) to protect your tooling on tough alloys. • CAREER & HIRING ROADMAP: Unlock tactical strategies for passing shop-floor interviews, understanding shift dynamics, navigating corporate talent networks, and getting hired at high-paying shops. • CLEAN VISUAL CHARTS: Tap the GRAPH button to see a simple drawing of your math setup right on your screen, making it easy to see if everything looks right before you cut raw metal. • SAVED WORK SHEETS: Turn your calculation numbers into a simple summary page. It’s perfect to view, share, or track right at your toolbox for your records. -------------------------------------------------- PREMIUM SUBSCRIPTION & FEATURES -------------------------------------------------- Mr. Machinist offers an interactive suite of structural, mechanical, and career planning calculators. Please note that access to these advanced engineering calculators, dynamic graphing modules, and shareable report compilation features requires an active premium subscription. You can explore the tools with a free trial. Subscription options include flexible weekly renewals or a convenient lifetime purchase option. Payments are processed securely via your Account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. You can manage or turn off auto-renew in your Account Settings at any time after purchase. -------------------------------------------------- TERMS & PRIVACY -------------------------------------------------- Your privacy is our top priority. The app does not track your personal info, and you don’t even need to create an account to use the calculators. Everything you type in stays strictly on your own device. • Terms of Use: https://faiassistant.com/terms.html • Privacy Policy: https://faiassistant.com/privacy.html
CNC · G
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The complete CNC reference, always in your pocket. Works 100% offline: no network needed on the shop floor. WHAT'S INSIDE • 149 G-codes and 115 M-codes explained, with syntax, parameters, examples and toolpath diagrams • 105 canned cycles (drilling, threading, pockets and more) • 90 workshop calculators and formulas: cutting speed, RPM, feeds and much more • G-code analyzer with graphic toolpath preview • Materials database with cutting parameters • Fanuc and Siemens alarms explained • Technical glossary and tables (threads, tolerances…) • Available in 18 languages FREE AND PRO The free version includes a complete sample of the reference, the glossary and all languages. One single one-time purchase unlocks EVERYTHING, forever: no subscription, no recurring costs. Made by machinists, for machinists.
Screenshots
Verdict
The clearest difference is device support: Mr. Machinist at 3 against CNC · G's 1. Mr. Machinist also leads on iOS requirement (13.0 vs 16.4). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Mr. Machinist sells 2 in-app purchases, starting at $4.99 per 7 days and CNC · G sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Mr. Machinist ships an update daily, CNC · G every 2 days. The most recent releases landed on June 14, 2026 and September 13, 2026 respectively.
| Parameter | Mr. Machinist | CNC · G |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Every 2 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 37 MB | 94 MB |
| Age rating | 4+ | 4+ |
| Developer | Allan Bremer | silverio valerio brandao |
In-app purchases
Mr. Machinist
- Premium Access3 Days trial$4.997 Days
- Premium Lifetime Access$29.99
CNC · G
- Pro — Tuo per sempre$17.99





