ThinkDiag+ vs LAUNCH i
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
LAUNCH i
This utility app works with a specific tire pressure tool to activate, program, and copy sensor IDs. It supports 98% of market activation and programming, and provides guidance for tire pressure learning on most models. Users can also read tire pressure and temperature data to resolve tire pressure issues.
- Activate tire pressure sensors
- Program tire pressure sensors
- Copy sensor IDs
- Supports 98% of market activation/programming
- Tire pressure learning guidance
- Read tire pressure and temperature data
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The LAUNCH i-TPMS mobile APP needs to be used with the LAUNCH i-TPMS tire pressure tool. The LAUNCH i-TPMS tire pressure tool can activate, program and copy the ID of the LAUNCH tire pressure sensor. Supports 98% of activation and programming on the market. Supports tire pressure learning method guidance for 98% of models, without OBD learning function; supports reading of tire pressure data, including pressure and tire temperature. Better help customer owners solve tire pressure problems.
Screenshots
Verdict
The clearest difference is review sentiment: ThinkDiag+ at 74% against LAUNCH i's 0%. ThinkDiag+ also leads on rating (4.5 vs 1.0) and ratings volume (4.3K vs 1). LAUNCH i's advantage is monetization model (free vs free with in-app purchases) and update cadence (every 10 days vs every 3 weeks). On price, ads, in-app purchases and device support 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 1.0. That said, the two scores are not equally well evidenced: ThinkDiag+ has 4.3K ratings behind it against 1, 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 0% of LAUNCH i's.
ThinkDiag+ ships an update every 3 weeks, LAUNCH i every 10 days. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.
| Parameter | ThinkDiag+ | LAUNCH i |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4.3K ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 73.9% of reviews — better | 0.0% of reviews |
| Number of ratings | 4.3K — better | 1 |
| Update frequency | Every 3 weeks | Every 10 days — better |
| 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 — better | 13.0 |
| Further details — not scored | ||
| Size | 539 MB | 45 MB |
| Age rating | 17+ | 17+ |
| Developer | THINKCAR INC | Launch Tech Co., Ltd |
Customer experience
ThinkDiag+
LAUNCH i
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
LAUNCH i
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ThinkDiag+
No in-app purchases
LAUNCH i
No in-app purchases
