Ediag vs GWSCAN
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.
GWSCAN
Unlock advanced vehicle diagnostics and maintenance insights. This tool helps you understand your car's systems, read and clear trouble codes, and monitor live engine data. Ideal for vehicle owners seeking professional-level insights without the dealership cost.
- OBDII Diagnostics
- In-depth system scans
- Live engine data monitoring
- Maintenance light reset
- Scan and clear DTCs
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GWSCAN DIAGNOSTICS THAT BREAK ALL THE RULES! Unlock your inner mechanic with the tool that shows you what the pro knows. A must-have for every vehicle owner. The GWSCAN offers essential diagnostics with advanced features, covering 85+ manufacturers, a 2-year warranty, and free software updates—without breaking the bank. Diagnose and reset check engine lights from your driveway, saving time and money. Take control of your car care with confidence and convenience—choose GWSCAN. Detailed Features: 1) OBDII Diagnostics Offers standard OBDII diagnostics for engines, including scanning and clearing of Diagnostic Trouble Codes (DTCs). 2)In-depth Check Performs comprehensive system scans on vehicles, including the chassis and body, to display manufacturer fault codes, provide definitions, and enable code clearing. 3)Live Data Displays live engine data during idle, operational, or full load conditions, including real-time information on RPM, battery voltage, air and fluid temperatures, and engine load. 4)Maintenance Light Reset Reset the maintenance counter and turn off the maintenance light after finishing maintenance.
Screenshots
Verdict
The clearest difference is monetization model: Ediag at free against GWSCAN's paid. Ediag also leads on ratings volume (1.4K vs 83). GWSCAN's advantage is review sentiment (59% vs 30%) and iOS requirement (12.0 vs 15.6). On price, rating, update cadence and ads 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 4.3 for GWSCAN. That said, the two scores are not equally well evidenced: Ediag has 1.4K ratings behind it against 83, 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 59% of GWSCAN's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 27, 2026 and September 26, 2026 respectively.
| Parameter | Ediag | GWSCAN |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (1.4K ratings) | 4.3 (83 ratings) |
| Positive reviews | 29.6% of reviews | 58.6% of reviews — better |
| Number of ratings | 1.4K — better | 83 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 455 MB | 492 MB |
| Age rating | 4+ | 12+ |
| Developer | Shenzhen Kingbolen Electrics Technology Co., Ltd. | Apex Tool Group |
Customer experience
Ediag
GWSCAN
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
GWSCAN
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ediag
No in-app purchases
GWSCAN
No in-app purchases
