Ediag vs 034SPI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ediag
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.
- Full-function diagnosis
- Read data flow
- Read/clear fault code
- Read vehicle information
- Automatic VIN reading
- Diagnostic reports
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Support full-function diagnosis, read data flow, read/clear fault code, read vehicle information. Select any vehicle diagnostic software, covering major automobile manufacturers.Support one-key diagnosis and automatic VIN reading. generate professional diagnostic reports.
034SPI
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.
- Flash ECU/TCU tunes
- Change fuel octane/transmission files
- Configure live data displays
- High-speed data logging
- Read & clear DTC codes
- Perform adaptations/recalibrations
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Designed for use on iPhone/iOS as well as Apple Silicon-equipped laptops (M1, M2, M3), 034SPI allows you to easily flash your car, change fuel maps, configure live data displays, record and submit data logs to 034Motorsport's Tuning Support team, and utilize diagnostic support tools such as DTC/CEL code read/clear and more! Available now for use with any Dynamic+ ECU or TCU tune and the latest Dynamic+ End User Flashing Dongle (May 2023 & Newer)! Full App Features: Complete Any ECU Or TCU Tune flash Quickly Flash Different Fuel Octane Or Transmission Files Flash ECU/TCU Using Mobile Device's Internet Connection Enhanced Flashing Protocol Protections For Increased Flashing Stability User-Configurable Live Data Displays Dozens Of Defined Variables Available Multiple Display Types Available for Live Dt High-Speed Data Logging Of Pre-Defined Variables Easy Upload Of Logs To 034Motorsport Server Data Log Analysis Services Available Free Of Charge Read & Clear DTCs On ECU & TCU View Emissions Monitor Statuses Perform Adaptations/Recalibrations* Throttle Body Adaptation Fuel Tank Drain *Available for limited platforms, coverage expanding regularly
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Ediag | 034SPI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (1.4K ratings) — better | 4.2 (42 ratings) |
| Positive reviews | 29.6% of reviews | 55.0% of reviews — better |
| Number of ratings | 1.4K — better | 42 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 12.2 — better |
| Further details — not scored | ||
| Size | 455 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | Shenzhen Kingbolen Electrics Technology Co., Ltd. | 034motorsport Industries, LLC |
Customer experience
Ediag
034SPI
Bugs and requests
Ediag
Reported bugs
12 issues- 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
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- Cannot clear all error codes completely
- Doesn't recognize 2023+ vehicle models
- Login validation errors after updates
- Slow code retrieval compared to competitors
- Device stops working unexpectedly
- Firmware update required for initial functionality
- Cannot identify common manufacturers automatically
Requested features
10 requests- 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)
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- Support for MG Siac models
- iOS/iPhone compatibility
- Clearer section titles and better documentation
- Ability to perform ABS bleeding on Chevy vehicles
- Support for Ford Galaxy vehicles
034SPI
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ediag
No in-app purchases
034SPI
No in-app purchases
