# CoolSpeed vs GM Pro AF

CoolSpeed and GM Pro AF are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CoolSpeed ships an update every 2 weeks, GM Pro AF every 3 weeks. The most recent releases landed on September 20, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | CoolSpeed | GM Pro AF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (2 ratings)](https://appshunter.io/ios/app/gm-pro-af/id6474267202/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | — | Free |
| Size | 114 MB | 53 MB |
| Requires iOS | **14.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WTO Werkzeug-Einrichtungen GmbH](https://appshunter.io/developer/1533221720) | [Gorilla Tools, Inc](https://appshunter.io/developer/1480564474) |

## What reviewers say

### CoolSpeed

[App page](https://appshunter.io/ios/app/coolspeed/id1534547293)

**In-app purchases:** none


### GM Pro AF

[App page](https://appshunter.io/ios/app/gm-pro-af/id6474267202)

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:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CoolSpeed free?

CoolSpeed 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.

### Do CoolSpeed or GM Pro AF have ads?

Neither CoolSpeed nor GM Pro AF shows ads.

### Which is updated more often, CoolSpeed or GM Pro AF?

CoolSpeed ships an update every 2 weeks, and GM Pro AF every 3 weeks. Most recently, CoolSpeed was updated on September 20, 2026 and GM Pro AF on September 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*