# OBD Mate vs ChkOBD OBD2 Analyzer

The clearest difference is rating: ChkOBD OBD2 Analyzer at 3.0 against OBD Mate's 1.8. OBD Mate's advantage is in-app purchases (none vs 4) and ratings volume (115 vs 4). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ChkOBD OBD2 Analyzer sells 4 in-app purchases, starting at $4.99 per month. OBD Mate asks for nothing beyond the download.

ChkOBD OBD2 Analyzer holds the better App Store score, 3.0 against 1.8. That said, the two scores are not equally well evidenced: OBD Mate has 115 ratings behind it against 4, so its average is the more settled of the two.

OBD Mate ships an update every 5 weeks, ChkOBD OBD2 Analyzer every 3 months. The most recent releases landed on September 24, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | OBD Mate | ChkOBD OBD2 Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.8 (115 ratings)](https://appshunter.io/ios/app/obd-mate/id1405374762/reviews) | **[3.0 (4 ratings)](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011/reviews)** |
| Number of ratings | **115** | 4 |
| Positive reviews | 9.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 365 MB | 63 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Autophix Tech Co., Ltd](https://appshunter.io/developer/650288249) | [Check On-Board Diagnostics LLC](https://appshunter.io/developer/1511585010) |

## What reviewers say

### OBD Mate

[App page](https://appshunter.io/ios/app/obd-mate/id1405374762)

Diagnose vehicle faults and receive driving assistance using your smartphone or tablet. Connect via Bluetooth to read and clear error codes, monitor sensor data, and view custom dashboards for a better driving experience.

**Highlights:** Fault diagnosis, Driving assistance, Read and clear codes, Freeze frame data, O2 sensor monitoring, Customizable dashboard

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

**In-app purchases:** none


### ChkOBD OBD2 Analyzer

[App page](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011)

Connect your iPhone or iPad to your car's engine to view vital data. Access basic engine values for free, with in-app purchases for advanced diagnostics, smog check readiness, VIN analysis, and error decoding.

**Highlights:** View engine values, In-app purchase for advanced data, Smog Check Assistant, VIN Analyzer, Error Decoder and Reset, Bluetooth adapter compatibility check

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Smog Check Assistant | $4.99 | per month |
| VIN Analyzer | $1.99 | one-time |
| Error Analyzer | $2.99 | one-time |
| Advance Engine Values | $4.99 | one-time |


## Frequently asked questions

### Is OBD Mate free?

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

### Is ChkOBD OBD2 Analyzer free?

ChkOBD OBD2 Analyzer is free to download, with in-app purchases available.

### Which has better reviews, OBD Mate or ChkOBD OBD2 Analyzer?

ChkOBD OBD2 Analyzer is rated higher. OBD Mate averages 1.8 out of 5 from 115 ratings, while ChkOBD OBD2 Analyzer averages 3.0 from 4 ratings.

### Do OBD Mate or ChkOBD OBD2 Analyzer have ads?

Neither OBD Mate nor ChkOBD OBD2 Analyzer shows ads.

### Which is updated more often, OBD Mate or ChkOBD OBD2 Analyzer?

OBD Mate ships an update every 5 weeks, and ChkOBD OBD2 Analyzer every 3 months. Most recently, OBD Mate was updated on September 24, 2026 and ChkOBD OBD2 Analyzer on June 5, 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.*