# ELMCheck vs Signal

The clearest difference is device support: ELMCheck at 3 against Signal's 1. On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. ELMCheck sells 1 one-off in-app purchase and Signal sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | ELMCheck | Signal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/elmcheck/id6479630442/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 15 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fearless design, LLC](https://appshunter.io/developer/321056993) | [Marek Sokol](https://appshunter.io/developer/1238312847) |

## What reviewers say

### 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 |


### Signal

[App page](https://appshunter.io/ios/app/signal-dashboard-lights/id6804491103)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Signal Premium Monthly | $4.99 | per month |
| Signal Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is ELMCheck free?

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

### Is Signal free?

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

### Do ELMCheck or Signal have ads?

Neither ELMCheck nor Signal shows ads.

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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.*