Comparison

CNC Machinist Calculator vs G

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read 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

About

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.

Highlights
  • Image to G-Code conversion
  • Advanced parameter controls
  • High-precision output
  • Export and share G-Code
  • Fast and easy to use
Read 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

CNC Machinist Calculator4 screens
G4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 8, 2026 and October 16, 2026 respectively.

ScorecardNo meaningful differences
CNC Machinist Calculator versus G: the parameters behind the verdict, then further details
ParameterCNC Machinist CalculatorG
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews66.7% of reviews—
Number of ratings11
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS16.616.4 — better
Further details — not scored
Size8 MB89 MB
Age rating4+4+
DeveloperVladislav ZhirnovOmer Faruk BAGCI

Customer experience

CNC Machinist Calculator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive66.7%
Neutral33.3%
Negative0.0%

G

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

CNC Machinist Calculator

Subscriptions2
  • Remove ADS monthly$0.991 Month
  • Full version / year$2.991 Year
One-time1
  • Remove ADS$4.99
8 purchases

G

Subscriptions5
  • GCode Weekly$1.997 Days
  • GCode Pro Weekly$3.997 Days
  • GCode Monthly$4.991 Month
Show 2 more
  • GCode Pro Monthly$8.991 Month
  • G-Code Pro Yearly$39.991 Year
One-time3
  • 15 Credits$1.99
  • 30 Credits$2.99
  • 50 Credits$3.99

Questions

Is CNC Machinist Calculator free?
CNC Machinist Calculator is free to download, with in-app purchases available.
Is G free?
G is free to download, with in-app purchases available.
Which has better reviews, CNC Machinist Calculator or G?
CNC Machinist Calculator and G are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do CNC Machinist Calculator or G have ads?
Neither CNC Machinist Calculator nor G shows ads.
Which is updated more often, CNC Machinist Calculator or G?
CNC Machinist Calculator ships an update every 2 months, and G every 2 months. Most recently, CNC Machinist Calculator was updated on October 8, 2026 and G on October 16, 2026.

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