Comparison

Machining Calculator vs GM Pro AF

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

Head to head
About

Machining Calculator

This app helps engineers and operators optimize machining performance by calculating optimal cut settings for turning, milling, drilling, and tapping. It demonstrates how minor parameter adjustments can significantly impact overall results.

Highlights
  • Calculate cut settings
  • Optimize turning performance
  • Optimize milling performance
  • Optimize drilling performance
  • Optimize tapping performance
  • Demonstrates parameter impact
Features
Read full description

Machining calculator apps: calculate cut settings based on job parameters The Machining calculator apps are designed to help engineers and operators optimize the performance of their turning, milling, drilling and tapping applications by calculating optimal cut settings based on job parameters. The apps also highlight how small adjustments of parameters can have a big impact on the overall results.

About

GM Pro AF

This app instantly configures running parameters for machining cutters, calculating RPM, IPM, SFM, and Chimp-Loads for various materials. It provides confidence and swagger for shop floor operations and allows sharing of findings.

Highlights
  • Instant configuration of running parameters
  • Calculates RPM, IPM, SFM, and Chimp-Loads
  • Supports a wide variety of machining materials
  • Quick calculations without lengthy questionnaires
  • Share machining findings
Features
Read full description

The Gorilla Machinist Pro App immediately configures running parameters to put you right in the wheelhouse of all the Gorilla Mill family of cutters. Accurate, dependable, and living on the hairy edge for those “other” end mill and drill lines. RPM, IPM, SFM and Chimp-Loads are calculated at the blink of an eye. A wide variety of machining materials, with no cumbersome long-winded questionnaire asking if all the planets are aligned or if your coolant stinks. And now it’s new and improved! WHAT you say? Yerp, it’s chalked full of calculations and formulas for everything machining so you too can be a “Rock Star” on the shop floor. Walk onto the shop floor with the confidence and swagger of Connor McGregor walking into the Octagon. Share your findings with friends, co-workers, and family…or DON”T and just tell folks it’s all in your noodle upstairs!

Screenshots

Machining Calculator4 screens
GM Pro AF4 screens

Verdict

The call

The clearest difference is update cadence: GM Pro AF at every 3 weeks against Machining Calculator's every 5 months. GM Pro AF also leads on rating (4.5 vs 4.3). Machining Calculator's advantage is iOS requirement (13.0 vs 15.0). On price, ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

GM Pro AF holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

UpkeepUpdate frequency

Machining Calculator ships an update every 5 months, GM Pro AF every 3 weeks. Both last shipped on October 20, 2026.

Scorecard3 real differences · 7 level
Machining Calculator versus GM Pro AF: the parameters behind the verdict, then further details
ParameterMachining CalculatorGM Pro AF
PriceFreeFree
Rating4.3 (4 ratings)4.5 (2 ratings) — better
Positive reviews54.5% of reviews—
Number of ratings4 — better2
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.0 — better15.0
Further details — not scored
Size5 MB53 MB
Age rating12+4+
DeveloperSandvik Coromant ABGorilla Tools, Inc

Customer experience

Machining Calculator

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews44 reviews
Positive54.5%
Neutral11.4%
Negative34.1%

GM Pro AF

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Machining Calculator

No in-app purchases

None

GM Pro AF

No in-app purchases

Questions

Is Machining Calculator free?
Machining Calculator is free to download, with no in-app purchases.
Is GM Pro AF free?
GM Pro AF is free to download, with no in-app purchases.
Which has better reviews, Machining Calculator or GM Pro AF?
GM Pro AF is rated higher. Machining Calculator averages 4.3 out of 5 from 4 ratings, while GM Pro AF averages 4.5 from 2 ratings.
Do Machining Calculator or GM Pro AF have ads?
Neither Machining Calculator nor GM Pro AF shows ads.
Which is updated more often, Machining Calculator or GM Pro AF?
Machining Calculator ships an update every 5 months, and GM Pro AF every 3 weeks. Most recently, Machining Calculator was updated on October 20, 2026 and GM Pro AF on October 20, 2026.

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