MotoLink vs Ediag
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MotoLink
This app transforms your smartphone into a diagnostic tool for Harley-Davidson motorcycles. It allows you to read and clear diagnostic trouble codes, view real-time data, and access your bike's information, potentially saving you money on shop visits.
- Read diagnostic trouble codes
- Clear Check Engine light
- Save and share diagnostic reports
- View real-time data parameters
- Virtual dashboard visualization
- VIN and ECM information lookup
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MotoLink™ turns your smartphone into a powerful diagnostic tool for Harley-Davidson motorcycles. We created MotoLink plug & play adapter so that you can easily diagnose your bike yourself and see what’s wrong with it, while saving money on shop visits. Wonder what that check engine light means? No need to see a mechanic. Simply plug in a wireless MotoLink 4-pin or 6-pin adapter into your bike’s diagnostic port and launch MotoLink™ app on your smartphone! Features & benefits: • Save on shop visits • Know before you spend money on repair • Read diagnostic trouble codes and get detailed descriptions • Clear Check Engine light • Save and share diagnostic reports • Look up your bike’s VIN and electronic control module’s information • View real-time data parameters • Visualize your bike’s data on a virtual dashboard • Choose US or metric units • Available in five languages: English, French, Spanish, Italian and German • Get free unlimited updates • No ads MotoLink works on most Harley-Davidson bikes. There are two types of adapters available. The 4-pin adapter is compatible with 2013 and older models with Delphi engine control units and 4-pin OBD connectors. The 6-pin adapter works with 2011 and newer Harley-Davidson bikes with CAN-Bus and 6-pin OBD connectors. Please visit https://motolink.net/motolink1hd.html to check compatibility with your bike. Please note that even if your bike is on the list, MotoLink may not work with it, if your bike was customized or has aftermarket equipment installed on it. NOTE: This app works with MotoLink and Motorscan adapters only. Do not use your smartphone app while riding.
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.
Screenshots
Verdict
The clearest difference is rating: Ediag at 4.3 against MotoLink's 1.5. Ediag also leads on ratings volume (1.6K vs 2). MotoLink's advantage is review sentiment (50% vs 30%) and update cadence (fortnightly vs every 2 months). On price, ads, in-app purchases and monetization model 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.
Ediag holds the better App Store score, 4.3 against 1.5. That said, the two scores are not equally well evidenced: Ediag has 1.6K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 50% of MotoLink's written reviews are positive against 30% of Ediag's, so the app with the better star average is not the one people write more warmly about.
MotoLink ships an update fortnightly, Ediag every 2 months. The most recent releases landed on November 2, 2026 and November 12, 2026 respectively.
| Parameter | MotoLink | Ediag |
|---|---|---|
| Price | Free | Free |
| Rating | 1.5 (2 ratings) | 4.3 (1.6K ratings) — better |
| Positive reviews | 50.0% of reviews — better | 29.6% of reviews |
| Number of ratings | 2 | 1.6K — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 77 MB | 455 MB |
| Age rating | 4+ | 4+ |
| Developer | MotoLink LLC | Shenzhen Kingbolen Electrics Technology Co., Ltd. |
Customer experience
MotoLink
Ediag
Bugs and requests
MotoLink
Not enough reviews yet to summarise bugs or 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
In-app purchases
MotoLink
No in-app purchases
Ediag
No in-app purchases
