ThinkDiag+ vs TOPDON BatteryLab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ThinkDiag+
This app provides professional-level vehicle diagnostics, offering features like reading/clearing fault codes, data flow analysis, and special maintenance functions. It supports a wide range of car brands and allows users to subscribe to specific diagnostic software. Connects via Bluetooth to your smartphone for intelligent vehicle analysis.
- OE-level diagnostic functions
- Full OBD II diagnosis
- Special maintenance functions
- Supports 100+ vehicle brands
- 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). Not only for "ThinkDiag" and "ThinkDiag 2" device, but also works for "ThinkDiag Mini", "ThinkDirver", and "Thinkcar Pro" devices. ThinkDiag, an innovative vehicle diagnostic tool, is specially designed for repair technicians, small and medium-sized repair shops, and DIYers, to achieve the original manufacturer level diagnostic performance. It supports more than 100 vehicle brands of diagnostic services, including 15 special maintenance reset functions. ThinkDiag is as good as those comprehensive diagnostic equipment costed thousands of dollars. ThinkDiag is also an intelligent diagnostic device. Connecting with smartphone via Bluetooth, it is controlled to work by app. In the app, there is a diagnostic software store, and users can subscribe for diagnostic software according to their needs. ***Contact Us W: www.mythinkcar.com E: service@mythinkcar.com P: +1 833-692-2766 2151 S Haven Ave Unit 203 Ontario CA 91761 USA
TOPDON BatteryLab
This app allows you to test your car's battery and generator. It provides detailed battery life and voltage calculations, and can manage multiple devices simultaneously. Generate and view test reports with ease.
- Calculate battery life and voltage
- Inspect car generator
- Manage multiple devices
- Quick device connection
- One-click test report generation
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BatteryLab is a comprehensive battery testing application that connects to your device for battery testing, charging, and other functions. 1. Calculate the battery life and voltage. 2. Inspect the car generator. 3. Add multiple devices for management at the same time. 4. Quickly connect the device and perform battery testing. 5. Generate a test report with one click and view it at any time.
Screenshots
Verdict
The clearest difference is review sentiment: ThinkDiag+ at 74% against TOPDON BatteryLab's 24%. ThinkDiag+ also leads on rating (4.5 vs 2.5) and ratings volume (4.4K vs 14). TOPDON BatteryLab's advantage is 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.
ThinkDiag+ holds the better App Store score, 4.5 against 2.5. That said, the two scores are not equally well evidenced: ThinkDiag+ has 4.4K ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 74% of ThinkDiag+'s written reviews are positive against 24% of TOPDON BatteryLab's.
ThinkDiag+ ships an update every 3 weeks, TOPDON BatteryLab monthly. Both last shipped on October 24, 2026.
| Parameter | ThinkDiag+ | TOPDON BatteryLab |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4.4K ratings) — better | 2.5 (14 ratings) |
| Positive reviews | 74.1% of reviews — better | 24.1% of reviews |
| Number of ratings | 4.4K — better | 14 |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 539 MB | 188 MB |
| Age rating | 17+ | 4+ |
| Developer | THINKCAR INC | HK TOPDON TECHNOLOGY Co., LIMITED |
Customer experience
ThinkDiag+
TOPDON BatteryLab
Bugs and requests
ThinkDiag+
Reported bugs
3 issues- Failure to recognize VIN or vehicle information
- Inability to clear certain error codes
- Inconsistent performance across different devices
Requested features
4 requests- Improved user interface and navigation
- More detailed troubleshooting guides
- Expanded vehicle coverage and special functions
- Offline mode for diagnostics
TOPDON BatteryLab
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ThinkDiag+
No in-app purchases
TOPDON BatteryLab
No in-app purchases
Questions
Is ThinkDiag+ free?
Is TOPDON BatteryLab free?
Which has better reviews, ThinkDiag+ or TOPDON BatteryLab?
Do ThinkDiag+ or TOPDON BatteryLab have ads?
Which is updated more often, ThinkDiag+ or TOPDON BatteryLab?
Other comparisons
