ThinkDiag+ vs TuningBase
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
TuningBase
Access a comprehensive mobile database for automotive professionals and tuners. Quickly find ECUs for any vehicle, view performance data, and look up error codes. Supports multiple languages and includes a performance calculator.
- ECU Search by vehicle details
- Original and tuning performance data
- Bosch Part Number Search
- DTC Error Code lookup
- HP to kW conversion calculator
- Multilingual support
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ECUBase – Your Pro Tool for ECUs & Tuning Data Find the right ECU for any vehicle in seconds. ECUBase is the most comprehensive mobile database for automotive professionals, tuners, and workshops. What ECUBase offers: - ECU Search – Browse thousands of vehicles for engine and transmission ECUs. Select manufacturer, model, year, and engine – done. - Performance Data – View original and tuning values for HP and torque at a glance. - Bosch Part Number Search – Find ECU information directly using the manufacturer part number. - DTC Error Codes – Quick access to P-codes and their meanings. - Performance Calculator – Convert HP to kW and vice versa instantly. - 8 Languages – German, English, Russian, Ukrainian, Turkish, Lithuanian, Georgian, and Romanian.
Screenshots
Verdict
The clearest difference is rating: TuningBase at 5.0 against ThinkDiag+'s 4.5. TuningBase also leads on monetization model (free vs free with in-app purchases) and update cadence (every 6 days vs every 3 weeks). ThinkDiag+'s advantage is ratings volume (4.3K vs 1) and iOS requirement (12.0 vs 15.1). 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.
TuningBase holds the better App Store score, 5.0 against 4.5. 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.
ThinkDiag+ ships an update every 3 weeks, TuningBase every 6 days. The most recent releases landed on September 22, 2026 and September 12, 2026 respectively.
| Parameter | ThinkDiag+ | TuningBase |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4.3K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 73.6% of reviews | — |
| Number of ratings | 4.3K — better | 1 |
| Update frequency | Every 3 weeks | Every 6 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 539 MB | 32 MB |
| Age rating | 17+ | 17+ |
| Developer | THINKCAR INC | Niko Holm |
Customer experience
ThinkDiag+
TuningBase
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
TuningBase
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ThinkDiag+
No in-app purchases
TuningBase
No in-app purchases









