# ELMCheck vs Plier

The clearest difference is rating: ELMCheck at 5.0 against Plier's 4.6. Plier's advantage is ratings volume (15 vs 1) and iOS requirement (15.0 vs 18.0). On price, review sentiment, update cadence and ads there is nothing between them.

Both are free to download. ELMCheck sells 1 one-off in-app purchase and Plier sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ELMCheck holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Plier has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

ELMCheck ships an update every 2 weeks, Plier weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | ELMCheck | Plier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/elmcheck/id6479630442/reviews)** | [4.6 (15 ratings)](https://appshunter.io/ios/app/plier-car-maintenance-tracker/id6742336175/reviews) |
| Number of ratings | 1 | **15** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 14 MB | 54 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fearless design, LLC](https://appshunter.io/developer/321056993) | [Heap Labs LLC](https://appshunter.io/developer/840318089) |

## 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 |


### Plier

[App page](https://appshunter.io/ios/app/plier-car-maintenance-tracker/id6742336175)

Transform your iPhone into an AI-powered car diagnostic tool. Connect to your vehicle via an OBD2 device to understand its health, diagnose issues, and estimate repair costs.

**Highlights:** AI-driven diagnostic reports, Real-time OBD2 data and graphs, Check engine light insights, Repair cost estimation, ELM327 Bluetooth compatibility, Troubleshoot engine codes

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Weekly) | $6.99 | per 7 days |
| Pro ( 1 Year ) | $49.99 | per year |


## Frequently asked questions

### Is ELMCheck free?

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

### Is Plier free?

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

### Which has better reviews, ELMCheck or Plier?

ELMCheck is rated higher. ELMCheck averages 5.0 out of 5 from 1 ratings, while Plier averages 4.6 from 15 ratings.

### Do ELMCheck or Plier have ads?

Neither ELMCheck nor Plier shows ads.

### Which is updated more often, ELMCheck or Plier?

ELMCheck ships an update every 2 weeks, and Plier weekly. Most recently, ELMCheck was updated on October 24, 2026 and Plier 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.*