# BM DIAG vs Proformance Link

The clearest difference is update cadence: Proformance Link at every 2 weeks against BM DIAG's every 2 months. BM DIAG's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

BM DIAG ships an update every 2 months, Proformance Link every 2 weeks. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BM DIAG | Proformance Link |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/proformance-link/id6755274184/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Free |
| Size | 396 MB | 53 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Woyou Intelligent Technology(Shenzhen) Co., Ltd.](https://appshunter.io/developer/1788255603) | [Proformance Diagnostics LLC](https://appshunter.io/developer/1852904316) |

## What reviewers say

### BM DIAG

[App page](https://appshunter.io/ios/app/bm-diag/id6740069707)

**Features:** macOS Compatibility

**In-app purchases:** none


### Proformance Link

[App page](https://appshunter.io/ios/app/proformance-link/id6755274184)

This diagnostic tool connects to trucks via Bluetooth to read and clear fault codes, monitor data streams, and perform DPF regeneration and speed limit calibration. It supports various popular truck engine models and offers real-time updates for advanced functions.

**Highlights:** Bluetooth connectivity, Fault code lookup and clearing, Data stream viewing, DPF regeneration and reset, Speed limit calibration, Supports multiple engine models

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BM DIAG free?

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

### Is Proformance Link free?

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

### Do BM DIAG or Proformance Link have ads?

Neither BM DIAG nor Proformance Link shows ads.

### Which is updated more often, BM DIAG or Proformance Link?

BM DIAG ships an update every 2 months, and Proformance Link every 2 weeks. Most recently, BM DIAG was updated on October 7, 2026 and Proformance Link on October 24, 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.*