# iCarScan vs ChkOBD OBD2 Analyzer

The clearest difference is rating: iCarScan at 3.8 against ChkOBD OBD2 Analyzer's 3.0. iCarScan also leads on in-app purchases (none vs 4) and ratings volume (14 vs 4). On price, update cadence, 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. iCarScan asks for nothing beyond the download.

iCarScan holds the better App Store score, 3.8 against 3.0. Both are backed by a comparable volume of ratings — 14 and 4 respectively.

iCarScan ships an update every 5 months, ChkOBD OBD2 Analyzer every 3 months. The most recent releases landed on October 21, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | iCarScan | ChkOBD OBD2 Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (14 ratings)](https://appshunter.io/ios/app/icarscan/id1508699839/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011/reviews) |
| Number of ratings | **14** | 4 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 324 MB | 63 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [THINKCAR INC](https://appshunter.io/developer/1464847379) | [Check On-Board Diagnostics LLC](https://appshunter.io/developer/1511585010) |

## What reviewers say

### iCarScan

[App page](https://appshunter.io/ios/app/icarscan/id1508699839)

Access professional-level automotive diagnostic functions, including reading and clearing fault codes, viewing live data, and performing special tests. Supports a wide range of vehicle manufacturers with automatic VIN recognition and one-key diagnosis. Generates detailed diagnostic reports for informed maintenance.

**Highlights:** OE-level professional functions, Full OBD II diagnosis, Support for 39+ manufacturers, Automatic VIN reading, One-key diagnosis, Fault code interpretation, Diagnostic report generation

**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 iCarScan free?

iCarScan 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, iCarScan or ChkOBD OBD2 Analyzer?

iCarScan is rated higher. iCarScan averages 3.8 out of 5 from 14 ratings, while ChkOBD OBD2 Analyzer averages 3.0 from 4 ratings.

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

Neither iCarScan nor ChkOBD OBD2 Analyzer shows ads.

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

iCarScan ships an update every 5 months, and ChkOBD OBD2 Analyzer every 3 months. Most recently, iCarScan was updated on October 21, 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.*