# OBD故障码助手 vs 优胜汽修大师

The clearest difference is update cadence: 优胜汽修大师 at every 2 weeks against OBD故障码助手's every 2 months. OBD故障码助手's advantage is iOS requirement (7.1 vs 13.0). 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.

OBD故障码助手 ships an update every 2 months, 优胜汽修大师 every 2 weeks. The most recent releases landed on October 6, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | OBD故障码助手 | 优胜汽修大师 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 24 MB | 81 MB |
| Requires iOS | **7.1** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [深圳市爱夫卡科技有限公司](https://appshunter.io/developer/980516490) | [广州优胜汽车科技有限公司](https://appshunter.io/developer/1455963727) |

## What reviewers say

### OBD故障码助手

[App page](https://appshunter.io/ios/app/obd/id980516491)

**Features:** macOS Compatibility

**In-app purchases:** none


### 优胜汽修大师

[App page](https://appshunter.io/ios/app/id1484772060)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OBD故障码助手 free?

OBD故障码助手 is free to download, with no in-app purchases.

### Is 优胜汽修大师 free?

优胜汽修大师 is free to download, with no in-app purchases.

### Do OBD故障码助手 or 优胜汽修大师 have ads?

Neither OBD故障码助手 nor 优胜汽修大师 shows ads.

### Which is updated more often, OBD故障码助手 or 优胜汽修大师?

OBD故障码助手 ships an update every 2 months, and 优胜汽修大师 every 2 weeks. Most recently, OBD故障码助手 was updated on October 6, 2026 and 优胜汽修大师 on October 16, 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.*