EZdiag vs Mucar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EZdiag
This diagnostic tool connects to your smartphone to perform full-system vehicle diagnostics. It offers bi-directional capabilities for quick and easy troubleshooting, with optional manufacturer-specific software available for purchase.
- Smartphone-based OBDII diagnostics
- Full-system diagnostics
- Bi-directional capabilities
- Manufacturer-specific software options
- Portable and powerful device
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EZdiag is a smart phone based OBDII diagnostic tool designed with the professional technician in mind. The device is small and portable, yet powerful enough to rival its competitors. Users have the option to purchase manufacturer specific carline software based on their needs. This feature allows for full-system diagnostics including bi-directional capabilities, quickly and easily from the convenience of your smart phone.
Mucar
Access professional-level automotive diagnostic functions, including reading and clearing fault codes, viewing live data, and performing special tests. Supports a wide range of vehicle manufacturers and offers a community forum for users to share insights and get support.
- OE-level professional functions
- Full OBD II diagnosis
- Maintenance light reset
- Support for 39+ manufacturers
- Automatic VIN reading
- Professional diagnostic reports
- In-app user community
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1. Profession functions refer to OE level functions, such as read/clear code, data flow diagram, read ECU, drive test, bidirectional special functions, etc. 2.Support full-function OBD II diagnosis, read data flow, freeze frame read IM/real-time data, read/clear fault code, vehicle on-board monitoring/computer system control operation and read vehicle information. 3.Support vehicle maintenance light return to normal. 4.Select any vehicle diagnostic software, covering up to 39 major automobile manufacturers. 5. Support automatic VIN reading and one-key diagnosis. 6. Clear interpretation of fault codes and generate professional diagnostic reports. 7. Be able to communicate with other users within the ThinkDiag community (share/help/support).
Screenshots
Verdict
The clearest difference is rating: Mucar at 4.6 against EZdiag's 1.6. Mucar also leads on review sentiment (50% vs 8%) and monetization model (free vs free with in-app purchases). On price, update cadence, 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.
Mucar holds the better App Store score, 4.6 against 1.6. That said, the two scores are not equally well evidenced: Mucar has 385 ratings behind it against 42, so its average is the more settled of the two. Written reviews point the same way: 8% of EZdiag's written reviews are positive against 50% of Mucar's.
EZdiag ships an update monthly, Mucar every 2 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.
| Parameter | EZdiag | Mucar |
|---|---|---|
| Price | Free | Free |
| Rating | 1.6 (42 ratings) | 4.6 (385 ratings) — better |
| Positive reviews | 8.1% of reviews | 49.6% of reviews — better |
| Number of ratings | 42 | 385 — better |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 8.0 — better | 9.0 |
| Further details — not scored | ||
| Size | 17 MB | 500 MB |
| Age rating | 4+ | 17+ |
| Developer | Launch Tech Co., Ltd | THINKCAR INC |
Customer experience
EZdiag
Mucar
Bugs and requests
EZdiag
Not enough reviews yet to summarise bugs or requests.
Mucar
Reported bugs
20 issues- TCM fault cannot be cleared
- App crashes during report generation
- Functions removed after updates (Hyundai, Kia, special functions)
- App crashes or freezes
- Connection errors
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- Bluetooth connectivity issues
- Login process fails
- App becomes blank or empty after update
- Cannot read errors
- App crashes when communicating with car
- Data stream issues
- Special functions not appearing
- App not working after update
- Cannot register account
- App not loading or showing white screen
- Cannot read specific car blocks (e.g., ECM)
- SAS reset not working
- App not detecting certain car models
- App not working on iPhone after update
- App not updating on iPhone
Requested features
20 requests- Add Turkish language support
- Add Perodua and Proton car support
- Improve Russian translation and fix abbreviations
- Add VAZ support for iOS
- Add Haval support for iOS
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- Add Chery support for iOS
- Add Citroen support for iOS
- Add Bulgarian language support
- Add CarPlay app support
- Add proper screen scaling for iPad
- Add daily, weekly, or yearly subscription options
- Add more car manufacturers to the iOS version
- Add support for specific car models (e.g., Jeep Renegade Flex 1.8)
- Improve data stream readability
- Add translator for iPhone
- Add full Russian localization
- Improve app interface and design
- Add payment options via phone bill
- Add support for specific car blocks (e.g., ECM)
- Add support for specific functions (e.g., SAS reset)
In-app purchases
EZdiag
No in-app purchases
Mucar
No in-app purchases
