OBDGO PRO vs UJS OBDII
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OBDGO PRO
Unlock hidden vehicle features and perform OBD-II diagnostics with this app. It allows you to activate functionalities like wireless CarPlay, disable start-stop systems, and scan/clear trouble codes. Generate detailed diagnostic reports to understand and repair your car.
- Unlock hidden vehicle features
- OBD-II code scanning and clearing
- Generate and share diagnosis reports
- Activate wireless CarPlay
- Disable start-stop systems
- View freeze frame data
- Interactive data stream graphing
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OBDGO PRO besides basic OBD-II diagnosis, vehicle hidden features unlock is available. Let everyone enjoy the fun of modding! 1. Unlock Hidden Features Support Models: Porsche, BMW, Mercedes, Ford, Audi, Volkswagen, more available vehicle and year models please check in app. Popular features such as: - Activate Wireless CarPlay - Disable Start Stop - Enable Engine Performance Menu - Change Turn Signal Blicks Times - Change Head Unit Start Animation - Activate G-Force Display More features are waiting for you to explore! 2. OBD-II Diagnosis Vehicle coverage: GM, Ford, Chrysler, Toyota, Nissan, Mazda, Mercedes, Mitsubishi, Hyundai/Kia, BMW/Mini, Honda/Acura, Volkswagen/Audi, Subaru, Buick, Chevrolet, Cadillac, Lincoln, Dodge, Jeep, Smart, Skoda, Porsche, FIAT, Renault, Peugeot, Citroen, Landrover, Jaguar, Lexus, Infiniti, Suzuki, Ssangyong. Features such as: - Scan trouble codes - Clear trouble codes - Generate, print, and share Diagnosis Reports - Mode 6 (On-Board Monitoring Test Results) - Smog Readiness Check - Freeze Frame Data - Multiple data streams interactive graphing and logging - Wireless bluetooth connection with vehicle - Metric and Imperial settings 3. Diagnosis Report Diagnosis report is specific to your vehicle's year, make and model. Providing a cryptic code definition by giving you validated fixes for your trouble codes. Save time by using OBDGO PRO to know your vehicle how to repair in advance. OBDGO PRO is a professional scan tool and the APP is free to install, but it does require the purchase of sensor to communicate with your vehicle. Sensor simply connects to your data port located inside your car near the steering wheel. Every car made since 1996 is global compatible can be used anywhere in the world.
UJS OBDII
This professional car diagnostic app connects to UJS OBDII devices via Bluetooth to read and clear fault codes, monitor real-time vehicle performance, and analyze travel data. It supports multiple languages and offers high-speed, low-power data transmission.
- Fault code reading and clearing
- Real-time instrument panel display
- Vehicle performance testing
- Detailed travel analysis
- Multi-language support
- High-speed data transmission
- Low-power consumption
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UJS OBD is exclusively designed to support UJS OBDII series products, serving as a professional car diagnostic and real-time monitoring application. It offers multi-language support, including English, Español, Русский, 日本語，and 中文，ensuring seamless usability for users worldwide. By connecting your smartphone to the UJS OBDII vehicle terminal via Bluetooth, the app enables comprehensive vehicle management—covering core functions such as fault code reading & clearing, real-time instrument panel display, vehicle performance testing, and detailed travel analysis. It also features high-speed data transmission capabilities, paired with outstanding low-power consumption and ultra-energy-saving performance, ensuring long-lasting use without excessive battery drain. Caution: 1. This app only supports adapters compatible with Bluetooth 4.0/5.0. 2. The range of parameters accessible for each vehicle varies and is determined by the vehicle’s own control unit, not by the UJS OBD app. 3. UJS OBD is specifically optimized for use with UJS OBDII series products; compatibility with other devices is not guaranteed.
Screenshots
Verdict
The clearest difference is rating: UJS OBDII at 5.0 against OBDGO PRO's 4.5. UJS OBDII also leads on review sentiment (100% vs 69%). OBDGO PRO's advantage is ratings volume (31 vs 1) and iOS requirement (11.0 vs 13). 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.
UJS OBDII holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: OBDGO PRO has 31 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 69% of OBDGO PRO's written reviews are positive against 100% of UJS OBDII's.
OBDGO PRO ships an update every 2 months, UJS OBDII every 6 weeks. Both last shipped on October 24, 2026.
| Parameter | OBDGO PRO | UJS OBDII |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (31 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 69.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 31 — better | 1 |
| Update frequency | Every 2 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 13 |
| Further details — not scored | ||
| Size | 137 MB | 81 MB |
| Age rating | 17+ | 4+ |
| Developer | OBD GO TECH CO LTD | UJS INC |
Customer experience
OBDGO PRO
UJS OBDII
In-app purchases
OBDGO PRO
No in-app purchases
UJS OBDII
No in-app purchases
Questions
Is OBDGO PRO free?
Is UJS OBDII free?
Which has better reviews, OBDGO PRO or UJS OBDII?
Do OBDGO PRO or UJS OBDII have ads?
Which is updated more often, OBDGO PRO or UJS OBDII?
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