EasyDiag4 vs ThinkCar Bay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EasyDiag4
This application connects to your vehicle via Bluetooth to perform comprehensive fault diagnosis across various systems. It supports reading and clearing diagnostic trouble codes, viewing data streams, and resetting service lamps, catering to the needs of the vehicle maintenance market.
- Bluetooth vehicle data interaction
- One-click intelligent diagnosis
- Full system fault diagnosis
- Read DTCs
- Read Data Streams
- Clear DTCs
- Reset Service Lamp
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EasyDiag4 vehicle diagnostic application is a vehicle fault diagnosis tool software developed based on the mobile intelligent terminal platform. It is suitable for the vehicle maintenance market. It uses a dedicated connector to perform data Bluetooth interaction with the vehicle and supports one-click intelligent diagnosis. It can realize fault diagnosis for full systems such as power system and safety system, involving Read DTCs, Read Data Streams, Clear DTCs, and Reset Service Lamp. The software contains EOBD, maintenance and special function software, mainstream model diagnostic software, etc. It can meet the actual needs of most users for testing vehicles.
ThinkCar Bay
This service application supports THINKCAR automotive diagnostic products. It offers tutorials, case studies, after-sales service, and online viewing of diagnostic reports. Manage your products and get assistance with their use.
- Product tutorials
- Case studies
- After-sales service
- User product management
- Online diagnostic report viewing
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Thinkcar bay is a service application for THINKCAR brand products, providing users who have purchased various types of automotive diagnostic products with tutorials, case studies, after-sales service, user product management and online viewing of diagnostic reports for various products, providing assistance to users in the process of using the products.
Screenshots
Verdict
The clearest difference is review sentiment: ThinkCar Bay at 50% against EasyDiag4's 0%. ThinkCar Bay also leads on rating (3.3 vs 2.9) and update cadence (every 5 months vs every 18 months). EasyDiag4's advantage is ratings volume (19 vs 3). On price, ads, in-app purchases and monetization model 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.
ThinkCar Bay holds the better App Store score, 3.3 against 2.9. That said, the two scores are not equally well evidenced: EasyDiag4 has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of EasyDiag4's written reviews are positive against 50% of ThinkCar Bay's.
EasyDiag4 ships an update every 18 months, ThinkCar Bay every 5 months. The most recent releases landed on September 20, 2026 and July 19, 2026 respectively.
| Parameter | EasyDiag4 | ThinkCar Bay |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (19 ratings) | 3.3 (3 ratings) — better |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 19 — better | 3 |
| Update frequency | Every 18 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 114 MB | 215 MB |
| Age rating | 17+ | 17+ |
| Developer | Launch Tech Co., Ltd | THINKCAR INC |
Customer experience
EasyDiag4
ThinkCar Bay
In-app purchases
EasyDiag4
No in-app purchases
ThinkCar Bay
No in-app purchases
