# ChkOBD OBD2 Analyzer vs ELMCheck

The clearest difference is rating: ELMCheck at 5.0 against ChkOBD OBD2 Analyzer's 3.0. ELMCheck also leads on update cadence (every 2 weeks vs every 3 months). ChkOBD OBD2 Analyzer's advantage is ratings volume (4 vs 1) and iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. ChkOBD OBD2 Analyzer sells 4 in-app purchases, starting at $4.99 per month and ELMCheck sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ELMCheck holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

ChkOBD OBD2 Analyzer ships an update every 3 months, ELMCheck every 2 weeks. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ChkOBD OBD2 Analyzer | ELMCheck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/elmcheck/id6479630442/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 63 MB | 14 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Check On-Board Diagnostics LLC](https://appshunter.io/developer/1511585010) | [Fearless design, LLC](https://appshunter.io/developer/321056993) |

## What reviewers say

### 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 |


### ELMCheck

[App page](https://appshunter.io/ios/app/elmcheck/id6479630442)

Verify the authenticity and functionality of your OBD-II scanner. This app runs comprehensive tests on ELM327 commands to report supported features, ensuring safe and reliable use with your vehicle.

**Highlights:** Authenticity testing for OBD-II scanners, Comprehensive ELM327 command test suite, Reports actual supported features, Ensures safe scanner usage, Basic tests are free, Unlock full suite with in-app purchase

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Comprehensive testing | $2.99 | one-time |


## Frequently asked questions

### Is ChkOBD OBD2 Analyzer free?

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

### Is ELMCheck free?

ELMCheck is free to download, with in-app purchases available.

### Which has better reviews, ChkOBD OBD2 Analyzer or ELMCheck?

ELMCheck is rated higher. ChkOBD OBD2 Analyzer averages 3.0 out of 5 from 4 ratings, while ELMCheck averages 5.0 from 1 ratings.

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

Neither ChkOBD OBD2 Analyzer nor ELMCheck shows ads.

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

ChkOBD OBD2 Analyzer ships an update every 3 months, and ELMCheck every 2 weeks. Most recently, ChkOBD OBD2 Analyzer was updated on October 13, 2026 and ELMCheck on October 24, 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.*