Machining Calculator vs GM Pro AF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Calculate cut settings
- Optimize turning performance
- Optimize milling performance
- Optimize drilling performance
- Optimize tapping performance
- Demonstrates parameter impact
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
Machining Calculator ships an update every 5 months, GM Pro AF every 3 weeks. Both last shipped on October 20, 2026.
| Parameter | Machining Calculator | GM Pro AF |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (4 ratings) | 4.5 (2 ratings) — better |
| Positive reviews | 54.5% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 5 MB | 53 MB |
| Age rating | 12+ | 4+ |
| Developer | Sandvik Coromant AB | Gorilla Tools, Inc |
Customer experience
Machining Calculator
GM Pro AF
In-app purchases
Machining Calculator
No in-app purchases
GM Pro AF
No in-app purchases
Questions
Is Machining Calculator free?
Is GM Pro AF free?
Which has better reviews, Machining Calculator or GM Pro AF?
Do Machining Calculator or GM Pro AF have ads?
Which is updated more often, Machining Calculator or GM Pro AF?
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