# GM Pro AF vs BACMeter

The clearest difference is rating: BACMeter at 5.0 against GM Pro AF's 4.5. GM Pro AF's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.2). On price, ratings volume, update cadence and ads there is nothing between them.

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

BACMeter holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

GM Pro AF ships an update every 3 weeks, BACMeter monthly. The most recent releases landed on October 3, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | GM Pro AF | BACMeter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/gm-pro-af/id6474267202/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/bacmeter/id6748161554/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 53 MB | 2 MB |
| Requires iOS | **15.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Gorilla Tools, Inc](https://appshunter.io/developer/1480564474) | [Vishal Desai](https://appshunter.io/developer/949352447) |

## What reviewers say

### 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


### BACMeter

[App page](https://appshunter.io/ios/app/bacmeter/id6748161554)

This app facilitates court-ordered alcohol monitoring by connecting to a compatible breathalyzer. It guides users through testing, verifies identity, and automatically submits results to authorities for legal compliance.

**Highlights:** Court-approved alcohol monitoring, User-friendly testing interface, Identity verification for tests, Secure automatic result submission, Integration with court-approved breathalyzers

**In-app purchases:** none


## Frequently asked questions

### Is GM Pro AF free?

GM Pro AF is free to download, with no in-app purchases.

### Is BACMeter free?

BACMeter is free to download, with no in-app purchases.

### Which has better reviews, GM Pro AF or BACMeter?

BACMeter is rated higher. GM Pro AF averages 4.5 out of 5 from 2 ratings, while BACMeter averages 5.0 from 3 ratings.

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

Neither GM Pro AF nor BACMeter shows ads.

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

GM Pro AF ships an update every 3 weeks, and BACMeter monthly. Most recently, GM Pro AF was updated on October 3, 2026 and BACMeter on September 21, 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.*