# 解放行服务版 vs ZDOBD

The clearest difference is iOS requirement: 解放行服务版 at 10.0 against ZDOBD's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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 monthly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 解放行服务版 | ZDOBD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (4 ratings)](https://appshunter.io/ios/app/zdobd/id6449920963/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 162 MB | 22 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Smart Link](https://appshunter.io/developer/1527040809) | [深圳市正德友邦科技有限公司](https://appshunter.io/developer/1691030696) |

## What reviewers say

### 解放行服务版

[App page](https://appshunter.io/ios/app/id1269903447)

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

**In-app purchases:** none


### ZDOBD

[App page](https://appshunter.io/ios/app/zdobd/id6449920963)

This diagnostic tool connects to portable diesel vehicle devices via Bluetooth to perform comprehensive vehicle checks. It allows users to view ECU information, diagnose and clear faults, monitor real-time data, and conduct specific tests like DPF regeneration.

**Highlights:** Bluetooth connectivity, ECU version information, Vehicle fault diagnosis and clearing, Real-time data flow monitoring, DPF regeneration, SCR testing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 解放行服务版 free?

解放行服务版 is free to download, with no in-app purchases.

### Is ZDOBD free?

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

### Do 解放行服务版 or ZDOBD have ads?

Neither 解放行服务版 nor ZDOBD shows ads.

### Which is updated more often, 解放行服务版 or ZDOBD?

解放行服务版 ships an update monthly, and ZDOBD monthly. Most recently, 解放行服务版 was updated on November 6, 2026 and ZDOBD on November 3, 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.*