Optimising vs GM Pro AF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Optimising
This utility helps optimize the performance of rotary cutting tools like drills, taps, milling cutters, and reamers. It provides assistance to enhance the efficiency of these tools in various applications.
- Optimize rotary cutting tool performance
- Assists with drills, taps, milling cutters, reamers
- Enhances tool efficiency
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Optimising from Guhring is designed to assist you to optimise the performance of rotary cutting tools such as drills, taps, milling cutters and reamers.
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 rating: GM Pro AF at 4.5 against Optimising's 2.8. GM Pro AF also leads on update cadence (every 3 weeks vs every 8 months). Optimising's advantage is iOS requirement (9.0 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 2.8. Both are backed by a comparable volume of ratings — 4 and 2 respectively.
Optimising ships an update every 8 months, GM Pro AF every 3 weeks. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.
| Parameter | Optimising | GM Pro AF |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (4 ratings) | 4.5 (2 ratings) — better |
| Positive reviews | 62.5% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 8 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 | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 8 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | Guhring Pty. Ltd. | Gorilla Tools, Inc |
Customer experience
Optimising
GM Pro AF
In-app purchases
Optimising
No in-app purchases
GM Pro AF
No in-app purchases
