Viecar vs Mucar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Viecar
This app connects to your vehicle's ECU via Bluetooth to perform comprehensive diagnostics and health checks. It helps identify potential issues early, analyze fuel consumption, and track driving behavior for improved efficiency and safety.
- 360° vehicle physical examination
- Early detection of vehicle sub-health
- Historical fuel consumption analysis
- Driving behavior recording and analysis
- Bluetooth 4.0 dual-mode connectivity
- Low power consumption
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Viecar 4.0 is a "software + hardware" multi-functional, all-round vehicle high-tech car detection tool. It adopts Bluetooth 4.0 dual-mode design, perfectly supports iOS devices, supports high-speed data transmission, and has low power consumption and ultra-power saving. advantage. By connecting the car ECU computer interface to achieve 360° full vehicle physical examination, early detection of vehicle sub-health can also ensure that the vehicle is found to be faulty as early as possible during the warranty period, so as to timely deal with the relevant interests and protect the interests of the owner; Historical fuel consumption and other multi-dimensional fuel consumption analysis and evaluation, so that owners can save money and save money; can also record driving behavior, analyze vehicle condition data, propose improvements, timely correct bad driving habits, and enable drivers to use their own car more humane. .
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 4.5 against Viecar's 4.0. Mucar also leads on review sentiment (50% vs 20%) and ratings volume (380 vs 1). 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, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Mucar has 380 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 20% of Viecar's written reviews are positive against 50% of Mucar's.
Viecar ships an update every 4 weeks, Mucar every 2 months. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.
| Parameter | Viecar | Mucar |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) | 4.5 (380 ratings) — better |
| Positive reviews | 20.0% of reviews | 49.6% of reviews — better |
| Number of ratings | 1 | 380 — better |
| Update frequency | Every 4 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.0 | 9.0 |
| Further details — not scored | ||
| Size | 39 MB | 500 MB |
| Age rating | 4+ | 17+ |
| Developer | Shenzhen Chaoyue Technology Development Co.,Ltd | THINKCAR INC |
Customer experience
Viecar
Mucar
Bugs and requests
Viecar
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
Viecar
No in-app purchases
Mucar
No in-app purchases









