CNC Machinist Calculator vs G
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CNC Machinist Calculator
This industrial calculator provides CNC programmers and machinists with instant calculations for speeds, feeds, horsepower, coolant flow, tolerances, and G-code patterns. It offers 16 production-ready tools, works offline, and features a user-friendly interface designed for the shop floor. Save and share results for improved efficiency and accuracy.
- Milling Speed & Feed Calculator
- Drilling Speed & Feed Calculator
- Tolerance & Fit Calculator
- G-Code Reference & Generators
- Chip Load & Tool Deflection Calculator
- Offline functionality
- Inch/Metric unit switching
Read full descriptionHide full description
CNC Machinist Calculator — speeds & feeds, power, fits, tool life and G-code in your pocket. Works offline. Enter a tool and a material and get spindle RPM, feed rate, cut time and machine power in one second — metric or inch, with the formula and its source shown under every result. Free, no limits, no ads Milling, Drilling and Turning Speed & Feed Drill size and tap drill charts (letter, number, metric, fractional) G- and M-code reference with examples Pro — 7-day free trial on the yearly plan Milling, Drilling and Turning Power & Torque (MRR, kW/hp, N·m) Tolerance & Fit — ISO 286 limits and deviations from the standard tables, with inch display per ANSI B4.2 Turning Surface Roughness, Thread Milling with centre-line feed compensation Tool Life (Taylor), Coolant Flow & Nozzle, Ball-nose Step-over Chip Load & Deflection — HSM chip thinning, cutting forces, bending stress, chatter risk Cycle Time & Cost — cost per part from cutting time, setup, batch size, tool cost and shop rate G-code generators: bolt circle, grid, linear pattern, 3-point arc — safe Fanuc-style header, Z clearance, G81/G82/G83 Machine profile — results capped to your spindle's RPM, power and feed Tool library and your own materials with personal Vc, fz and kc Setup-sheet history, export to CSV and PDF Materials done properly 38 workpiece materials in ISO groups P/M/K/N/S/H — steels, stainless, cast iron, aluminium, brass, plastics, titanium, Inconel, hardened steel — each with separate starting values for HSS and carbide, specific cutting force kc, and coating factors (TiN, TiCN, TiAlN, AlCrN, DLC) with warnings when a coating does not suit the material. Built on real formulas Machinery's Handbook speeds and feeds, ISO 286-1/2 tolerance tables, ISO 68-1 thread geometry, Qu & Shih circular-cusp Ra, Taylor tool life, Bernoulli nozzle flow. The engine is covered by 200+ automated tests. Catalogue values are starting points — always confirm with your insert maker's data. Pricing Pro Monthly $1.99/month, Pro Yearly $7.99/year, or Lifetime $14.99 one-time. Subscriptions are charged to your Apple ID and renew automatically unless cancelled at least 24 hours before the end of the current period; manage them in Settings. Existing Remove Ads buyers keep full Pro. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.freeprivacypolicy.com/live/a849d8e9-1345-4ba8-a196-7cb1d4065a55
G
This utility transforms images into high-quality G-Code for CNC machines, laser engravers, and plotters. It offers advanced controls for fine-tuning output and is designed for makers and professionals.
- Image to G-Code conversion
- Advanced parameter controls
- High-precision output
- Export and share G-Code
- Fast and easy to use
Read full descriptionHide full description
Turn any image into high-quality G-Code with just one tap. Gcode Generator is a powerful and easy-to-use tool designed for CNC machines, laser engravers, plotters, and robotics projects. Features Image to G-Code Conversion Upload any image and generate clean G-Code instantly. Advanced Controls Adjust sample count, line density, center position, scaling, and other fine-tuning parameters. High-Precision Output Generate smooth curves, accurate paths, and machine-ready G-Code. Export and Share Save your generated G-Code Fast and Easy Built for makers, engineers, hobbyists, and CNC professionals. Whether you're engraving artwork, running a plotter, or preparing CNC projects, Gcode Generator provides a simple and efficient solution for generating G-Code. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
CNC Machinist Calculator and G are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. CNC Machinist Calculator sells 3 in-app purchases, starting at $0.99 per month and G sells 8 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for CNC Machinist Calculator against 5.0 for G. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.
| Parameter | CNC Machinist Calculator | G |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 8 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | Vladislav Zhirnov | Omer Faruk BAGCI |
Customer experience
CNC Machinist Calculator
G
In-app purchases
CNC Machinist Calculator
- Remove ADS monthly$0.991 Month
- Full version / year$2.991 Year
- Remove ADS$4.99
G
- GCode Weekly$1.997 Days
- GCode Pro Weekly$3.997 Days
- GCode Monthly$4.991 Month
Show 2 moreShow fewer
- GCode Pro Monthly$8.991 Month
- G-Code Pro Yearly$39.991 Year
- 15 Credits$1.99
- 30 Credits$2.99
- 50 Credits$3.99








