# ELMCheck — Tests for ELM327/OBD scanners

> Tests OBD-II scanner authenticity and feature support using ELM327 commands. (iPhone/iPad app by Fearless design, LLC.)

- Source: https://appshunter.io/ios/app/elmcheck/id6479630442 (this page in markdown: same URL + `.md`)
- Developer: [Fearless design, LLC](https://appshunter.io/developer/321056993)
- Category: Utilities
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 18 · 6 MB
- Languages: American English
- Released: 2024-03-22
- Data updated: 2026-08-21
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/elmcheck/id6479630442/reviews.md

## What is ELMCheck?

Check the authenticity of your OBD-II scanner with ELMCheck.

Most OBD-II scanners on the market use some variation of ELM327, but did you know that many scanners use clones of the original ELM327? It can be hard to tell, because these clones will work well enough for basic use but fail in unexpected scenarios. This is where ELMCheck comes in.

ELMCheck offers a comprehensive set of test cases that cover the entire documented set of ELM327 commands. Regardless of which version your scanner says it is, ELMCheck can provide a comprehensive report of the features that are actually supported.

Get the confidence you need to use your OBD-II scanner on your vehicle safely.

ELMCheck is free to run basic tests. An in-app purchase will unlock the full test suite.

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/elmcheck/id6479630442/reviews.md

### 5/5 — wow this app is amazing

*2024-08-29*

One of a kind app.  I’ve yet to see another app that can check if your OBD transmitter is a authentic ELM327

**Developer response:** Thank you and glad to hear you’re finding the app useful!

## Frequently asked questions about ELMCheck

### What is ELMCheck used for?

ELMCheck is used to test the authenticity and feature support of your ELM327-based OBD-II scanners. It runs a comprehensive set of tests to report which ELM327 commands your scanner actually supports, ensuring reliable performance.

### Is ELMCheck free to use?

Yes, ELMCheck offers basic tests for free. To access the full test suite and gain complete confidence in your scanner's capabilities, an in-app purchase is required.

### What kind of tests does ELMCheck perform?

ELMCheck runs tests covering the entire documented set of ELM327 commands. This provides a detailed report on the specific features your OBD-II scanner is capable of, regardless of what the device claims.

### How does ELMCheck help ensure safe vehicle use?

By verifying that your OBD-II scanner supports the necessary commands and functions, ELMCheck helps prevent unexpected failures during diagnostics. This confidence allows for safer and more effective use of the scanner on your vehicle.

### What devices is ELMCheck compatible with?

ELMCheck is available for Mac, iPhone, and iPad, making it accessible to a wide range of users who need to test their OBD-II scanners.

### When was ELMCheck last updated?

The latest version of ELMCheck, v1.8.5, was released on March 28, 2026. This indicates ongoing development and support for the application.

### What is the age rating for ELMCheck?

ELMCheck has an age rating of 4+, meaning it is suitable for users of all ages. This reflects the utility-focused nature of the application.

### What is the user rating for ELMCheck?

ELMCheck has received an excellent rating of 5.0 stars from one review. This suggests a very positive initial user experience.

## Version history (last 5 releases)

### v1.8.5 — 2026-03-28

- Bluetooth errors now display human-readable messages instead of raw error domain codes.
- Improved WiFi scanner disconnection handling. Connection refusals are now properly detected.
- Fixed bug where the "device not found" error message was missing a closing parenthesis.
- Fixed bug where VIN decode tests could report a successful result when the vehicle responded with blank data. All-space VIN payloads are now correctly rejected as invalid.

### v1.8.4 — 2026-01-29

Vehicles running 29-bit CAN-ID (e.g. Acura/Mercedes/Honda) are now better supported and able to decode VINs.

Additional improvements:
- The LELink^2 scanner and similar hardware can now be discovered and tested.
- The vehicle's detected CAN-ID format is now shown in the test results page.
- vLinker FS and MS are now supported.
- More generic OBD scanners from Amazon are now supported.

### v1.8.3 — 2024-12-01

Vehicles running 29-bit CAN-ID (e.g. Acura/Mercedes/Honda) are now better supported and able to decode VINs.

Additional improvements:
- The LELink^2 scanner and similar hardware can now be discovered and tested.
- The vehicle's detected CAN-ID format is now shown in the test results page.
- vLinker FS and MS are now supported.

### v1.8.2 — 2024-10-10

Vehicles running 29-bit CAN-ID (e.g. Acura/Mercedes/Honda) are now better supported and able to decode VINs.

Additional improvements:
- The LELink^2 scanner and similar hardware can now be discovered and tested.
- The vehicle's detected CAN-ID format is now shown in the test results page.

### v1.8.0 — 2024-10-02

Vehicles running 29-bit CAN-ID (e.g. Acura/Mercedes/Honda) are now better supported and able to decode VINs.

Additional improvements:
- The LELink^2 scanner and similar hardware can now be discovered and tested.
- The vehicle's detected CAN-ID format is now shown in the test results page.

## Apps similar to ELMCheck

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [OBD2 Car Scanner - EOBD Facile](https://appshunter.io/ios/app/obd2-car-scanner-eobd-facile/id713921569) | 4.6 (4,999) | Free | Utilities |

## More apps by Fearless design, LLC

- [Pelican: Automotive assistant](https://appshunter.io/ios/app/pelican-automotive-assistant/id1663683832)
- [CAN Studio](https://appshunter.io/ios/app/can-studio/id6477373179)
- [Scout, by Sidecar](https://appshunter.io/ios/app/scout-by-sidecar/id6749034239)

All apps by Fearless design, LLC: https://appshunter.io/developer/321056993

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*