# Ediag vs 034SPI

Ediag and 034SPI both sit at 4.3 stars, but that hides the real split: 55% of 034SPI's written reviews are positive against 30% of Ediag's. 034SPI also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (12.2 vs 15.6). Ediag's advantage is ratings volume (1.4K vs 42). On price, rating, 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.

On the App Store both sit at effectively the same score — 4.3 for Ediag against 4.2 for 034SPI. That said, the two scores are not equally well evidenced: Ediag has 1.4K ratings behind it against 42, so its average is the more settled of the two. Written reviews are what separate them: 30% of Ediag's written reviews are positive against 55% of 034SPI's.

Ediag ships an update every 2 months, 034SPI every 2 weeks. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Ediag | 034SPI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (1.4K ratings)](https://appshunter.io/ios/app/ediag/id6444249245/reviews)** | [4.2 (42 ratings)](https://appshunter.io/ios/app/034spi/id6468930588/reviews) |
| Number of ratings | **1.4K** | 42 |
| Positive reviews | 29.6% of reviews | **55.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 455 MB | 124 MB |
| Requires iOS | 15.6 | **12.2** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Kingbolen Electrics Technology Co., Ltd.](https://appshunter.io/developer/1653350029) | [034motorsport Industries, LLC](https://appshunter.io/developer/1699254218) |

## 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)


### 034SPI

[App page](https://appshunter.io/ios/app/034spi/id6468930588)

This app allows users to flash their car's ECU/TCU, change fuel maps, and configure live data displays. It also provides diagnostic tools like reading and clearing DTC codes. Compatible with Dynamic+ ECU/TCU tunes and the Dynamic+ End User Flashing Dongle.

**Highlights:** Flash ECU/TCU tunes, Change fuel octane/transmission files, Configure live data displays, High-speed data logging, Read & clear DTC codes, Perform adaptations/recalibrations

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ediag free?

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

### Is 034SPI free?

034SPI is free to download, with no in-app purchases.

### Which has better reviews, Ediag or 034SPI?

Ediag is rated higher. Ediag averages 4.3 out of 5 from 1.4K ratings, while 034SPI averages 4.2 from 42 ratings.

### Do Ediag or 034SPI have ads?

Neither Ediag nor 034SPI shows ads.

### Which is updated more often, Ediag or 034SPI?

Ediag ships an update every 2 months, and 034SPI every 2 weeks. Most recently, Ediag was updated on October 15, 2026 and 034SPI on October 16, 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.*