# ZDOBD vs OBD2 Car Scanner

The clearest difference is rating: OBD2 Car Scanner at 3.8 against ZDOBD's 2.0. OBD2 Car Scanner also leads on ratings volume (1.3K vs 4). ZDOBD's advantage is in-app purchases (none vs 3) and ads (none vs shown). On price, review sentiment, update cadence and monetization model there is nothing between them.

Both are free to download. OBD2 Car Scanner sells 3 in-app purchases, starting at $4.99 per 7 days. ZDOBD asks for nothing beyond the download.

OBD2 Car Scanner holds the better App Store score, 3.8 against 2.0. That said, the two scores are not equally well evidenced: OBD2 Car Scanner has 1.3K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of ZDOBD's written reviews are positive against 4% of OBD2 Car Scanner's.

ZDOBD ships an update monthly, OBD2 Car Scanner every 5 weeks. The most recent releases landed on September 8, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | ZDOBD | OBD2 Car Scanner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (4 ratings)](https://appshunter.io/ios/app/zdobd/id6449920963/reviews) | **[3.8 (1.3K ratings)](https://appshunter.io/ios/app/obd2-car-scanner-torque-fixd/id6479870894/reviews)** |
| Number of ratings | 4 | **1.3K** |
| Positive reviews | 0.0% of reviews | **3.8% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 22 MB | 76 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [深圳市正德友邦科技有限公司](https://appshunter.io/developer/1691030696) | [Digital Car Key LLC](https://appshunter.io/developer/1693551925) |

## What reviewers say

### 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


### OBD2 Car Scanner

[App page](https://appshunter.io/ios/app/obd2-car-scanner-torque-fixd/id6479870894)

Diagnose your car's engine and transmission with real-time data, customizable dashboards, and emissions readiness checks. This app connects to your vehicle's OBD2 system via Wi-Fi or Bluetooth for comprehensive maintenance and performance insights.

**Highlights:** Comprehensive diagnostics, Customizable dashboard, Real-time monitoring, Emissions readiness check, ECU self-monitoring test, HUD mode

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Subscription | $4.99 | per 7 days |
| Monthly Premium Subscription | $11.99 | per month |
| Lifetime Premium | $49.99 | one-time |

**What reviewers like**

- 👍 Easy to use

**What reviewers complain about**

- 🚫 Doesn't work as expected
- 💰 Expensive subscription
- 🛑 Difficult to cancel subscription
- 🤖 Intrusive ads
- 🔌 Connectivity issues

**Reported bugs**

- App crashes frequently
- Unable to register device
- Inaccurate diagnostic readings

**Requested features**

- Free trial option
- Compatibility with more vehicle models


## Frequently asked questions

### Is ZDOBD free?

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

### Is OBD2 Car Scanner free?

OBD2 Car Scanner is free to download, with in-app purchases available.

### Which has better reviews, ZDOBD or OBD2 Car Scanner?

OBD2 Car Scanner is rated higher. ZDOBD averages 2.0 out of 5 from 4 ratings, while OBD2 Car Scanner averages 3.8 from 1.3K ratings.

### Do ZDOBD or OBD2 Car Scanner have ads?

OBD2 Car Scanner shows ads; ZDOBD does not.

### Which is updated more often, ZDOBD or OBD2 Car Scanner?

ZDOBD ships an update monthly, and OBD2 Car Scanner every 5 weeks. Most recently, ZDOBD was updated on September 8, 2026 and OBD2 Car Scanner on September 25, 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.*