# SmartZDOBD vs Proformance Link

SmartZDOBD and Proformance Link 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.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on May 19, 2026 and July 24, 2026 respectively.

## The numbers

| Metric | SmartZDOBD | 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 weeks | Every 2 weeks |
| Monetization | — | Free |
| Size | 38 MB | 94 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Zhengde Youbang Technology Co., Ltd](https://appshunter.io/developer/1691030696) | [Proformance Diagnostics LLC](https://appshunter.io/developer/1852904316) |

## What reviewers say

### SmartZDOBD

[App page](https://appshunter.io/ios/app/smartzdobd/id6746559817)

**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 SmartZDOBD free?

SmartZDOBD 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 SmartZDOBD or Proformance Link have ads?

Neither SmartZDOBD nor Proformance Link shows ads.

### Which is updated more often, SmartZDOBD or Proformance Link?

SmartZDOBD ships an update every 2 weeks, and Proformance Link every 2 weeks. Most recently, SmartZDOBD was updated on May 19, 2026 and Proformance Link on July 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.*