# YAWOA vs ELMCheck

The clearest difference is in-app purchases: YAWOA at none against ELMCheck's 1. YAWOA also leads on iOS requirement (10.0 vs 18.0). ELMCheck's advantage is update cadence (every 2 weeks vs every 2 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. ELMCheck sells 1 one-off in-app purchase. YAWOA asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for YAWOA against 5.0 for ELMCheck. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

YAWOA ships an update every 2 months, ELMCheck every 2 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | YAWOA | ELMCheck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/yawoa/id1513104336/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/elmcheck/id6479630442/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 104 MB | 14 MB |
| Requires iOS | **10.0** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [亮 侯](https://appshunter.io/developer/616725498) | [Fearless design, LLC](https://appshunter.io/developer/321056993) |

## What reviewers say

### YAWOA

[App page](https://appshunter.io/ios/app/yawoa/id1513104336)

This diagnostic tool helps users understand their vehicle's performance and troubleshoot issues. It allows for scanning and clearing trouble codes, viewing real-time data, and checking smog readiness. Ideal for mechanics, enthusiasts, and everyday drivers seeking to diagnose and fix their car.

**Highlights:** Generate, print, and share repair reports, Scan and clear trouble codes, View Mode 6 monitoring results, Smog readiness check, Access freeze frame data, Interactive data graphing and logging, Wireless vehicle communication

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 YAWOA free?

YAWOA is free to download, with no in-app purchases.

### Is ELMCheck free?

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

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

YAWOA and ELMCheck are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do YAWOA or ELMCheck have ads?

Neither YAWOA nor ELMCheck shows ads.

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

YAWOA ships an update every 2 months, and ELMCheck every 2 weeks. Most recently, YAWOA was updated on October 20, 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.*