# Ediag vs HLAIS

The clearest difference is rating: Ediag at 4.3 against HLAIS's 1.5. Ediag also leads on review sentiment (30% vs 0%) and ratings volume (1.5K vs 22). HLAIS's advantage is iOS requirement (13.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Ediag holds the better App Store score, 4.3 against 1.5. That said, the two scores are not equally well evidenced: Ediag has 1.5K ratings behind it against 22, so its average is the more settled of the two. Written reviews point the same way: 30% of Ediag's written reviews are positive against 0% of HLAIS's.

Ediag ships an update every 2 months, HLAIS every 6 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Ediag | HLAIS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (1.5K ratings)](https://appshunter.io/ios/app/ediag/id6444249245/reviews)** | [1.5 (22 ratings)](https://appshunter.io/ios/app/hlais/id6739807511/reviews) |
| Number of ratings | **1.5K** | 22 |
| Positive reviews | **29.6% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 455 MB | 22 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Kingbolen Electrics Technology Co., Ltd.](https://appshunter.io/developer/1653350029) | [Shenzhen HND Photoelectricity Co.,Ltd](https://appshunter.io/developer/1692281210) |

## What reviewers say

### Ediag

[App page](https://appshunter.io/ios/app/ediag/id6444249245)

Perform comprehensive vehicle diagnostics, including reading data flow, fault codes, and vehicle information. Generate professional diagnostic reports for major automobile manufacturers. Features one-key diagnosis and automatic VIN reading.

**Highlights:** Full-function diagnosis, Read data flow, Read/clear fault code, Read vehicle information, Automatic VIN reading, Diagnostic reports

**In-app purchases:** none

**What reviewers like**

- ✅ Comprehensive diagnostic information and functionality
- 🎯 Works well for specific vehicle models (Chevy, Acura, etc.)
- 💪 Advanced features like glow plug programming and ECU coding
- 📱 Helpful AI and YouTube integration for guidance
- 🔧 Good value for price compared to expensive scan tools

**What reviewers complain about**

- 💰 Hidden subscription fees for special functions ($19.99 each)
- 🐛 App crashes frequently after updates
- ❌ Poor vehicle compatibility with newer models (2023+)
- 🔐 Requires location data and network connectivity
- 😕 Confusing user interface and unclear section titles

**Reported bugs**

- App crashes after latest update
- Activation fails with correct codes (used devices)
- Communication errors during diagnostics
- VIN finder doesn't work well for older cars
- First-day connection issues requiring account reset

**Requested features**

- Support for newer vehicle models (2023+)
- Better auto-identification for Ford and other manufacturers
- Language settings menu (Turkish language support mentioned)
- Ability to command multiple functions from same test screen
- Improved VIN finder for older vehicles (1990s-2000s)


### HLAIS

[App page](https://appshunter.io/ios/app/hlais/id6739807511)

Manage MFI devices through a USB connection. This software allows for direct control of connected hardware. It facilitates seamless interaction between your device and the application.

**Highlights:** MFI device management, USB data cable connection, Direct device control, Hardware interaction

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

**In-app purchases:** none


## Frequently asked questions

### Is Ediag free?

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

### Is HLAIS free?

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

### Which has better reviews, Ediag or HLAIS?

Ediag is rated higher. Ediag averages 4.3 out of 5 from 1.5K ratings, while HLAIS averages 1.5 from 22 ratings.

### Do Ediag or HLAIS have ads?

Neither Ediag nor HLAIS shows ads.

### Which is updated more often, Ediag or HLAIS?

Ediag ships an update every 2 months, and HLAIS every 6 weeks. Most recently, Ediag was updated on October 25, 2026 and HLAIS on October 25, 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.*