# ezOBD vs ChkOBD OBD2 Analyzer

The clearest difference is in-app purchases: ezOBD at none against ChkOBD OBD2 Analyzer's 4. ezOBD also leads on rating (3.3 vs 3.0) and update cadence (monthly vs every 3 months). On price, ratings volume, ads and device support there is nothing between them.

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

ezOBD holds the better App Store score, 3.3 against 3.0. Both are backed by a comparable volume of ratings — 6 and 4 respectively.

ezOBD ships an update monthly, ChkOBD OBD2 Analyzer every 3 months. The most recent releases landed on October 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | ezOBD | ChkOBD OBD2 Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (6 ratings)](https://appshunter.io/ios/app/ezobd/id1059612653/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011/reviews) |
| Number of ratings | **6** | 4 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 4 MB | 63 MB |
| Requires iOS | **8.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UP & RUNNING](https://appshunter.io/developer/1059612652) | [Check On-Board Diagnostics LLC](https://appshunter.io/developer/1511585010) |

## What reviewers say

### ezOBD

[App page](https://appshunter.io/ios/app/ezobd/id1059612653)

Access detailed information about your car's health and performance. Monitor real-time engine parameters, fuel consumption, and diagnostic trouble codes. Features a customizable dashboard and graphing capabilities, with VIN decoding and emission test readiness checks.

**Highlights:** Real-time dashboard display, Customizable gauges, Real-time graphing, Read and clear DTC codes, Monitor fuel consumption, VIN decoder, Emission test readiness

**Features:** macOS Compatibility

**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 ezOBD free?

ezOBD 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, ezOBD or ChkOBD OBD2 Analyzer?

ezOBD is rated higher. ezOBD averages 3.3 out of 5 from 6 ratings, while ChkOBD OBD2 Analyzer averages 3.0 from 4 ratings.

### Do ezOBD or ChkOBD OBD2 Analyzer have ads?

Neither ezOBD nor ChkOBD OBD2 Analyzer shows ads.

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

ezOBD ships an update monthly, and ChkOBD OBD2 Analyzer every 3 months. Most recently, ezOBD was updated on October 25, 2026 and ChkOBD OBD2 Analyzer on October 13, 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.*