Car Scanner ELM OBD2 vs CDDK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Car Scanner ELM OBD2
Monitor your car's performance, diagnose engine issues, and view sensor data in real-time. Customize your dashboard with gauges and charts, and reset fault codes. Supports a wide range of vehicles and offers advanced features for specific car brands.
- Real-time sensor data
- OBD fault code reading and resetting
- Customizable dashboard with gauges
- Extended PID support
- Mode 06 test results
- Emission test readiness check
- Acceleration measurement tool
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Check what your car is doing in realtime, get OBD fault codes, car performance, sensor data and more! Car Scanner is a vehicle / car performance / trip computer / diagnostics tool and scanner that uses an OBD II Wi-Fi or Bluetooth 4.0 (Bluetooth LE) adapter to connect to your OBD2 engine management / ECU. Car Scanner gives you a bunch of unique features: 1) Layout your own dashboard with the gauges and charts you want! 2) Add custom (extended PIDs) and get information, that was hidden from you by car manufacturer! 3) It can also show and reset a DTC fault code like a scantool. Car Scanner includes a huge database of DTC codes descriptions. 4) Car Scanner allows you to read free-frames (sensors state when DTC is saved). 5) Now with Mode 06 - you can get ECU self-monitoring test results. Helps you fix your car and helps keep repair costs down! 6) Check if your car is ready for emission tests. 7) Check all of the sensors at one screen 8) Car Scanner works with any vehicle that uses the OBD 2 standard (most vehicles built after 2000, but can work for vehicles as far back as 1996, check carscanner.info for more details). 9) Car Scanner includes a lot of connection profiles, that gives you some extra features for Toyota, Mitsubishi, GM, Opel, Vauxhal, Chevrolet, Nissan, Infinity, Renault, Dacia, Hyundai, Kia, Mazda, Volkswagen, Audi, Skoda, Seat, BMW and many others. 10) Car Scanner dashboard includes a HUD mode, that you can use to project data to your windshield. 11) Car Scanner provides a tool for very accurate acceleration measurments (0-60, 0-100, etc.) 12) Car Scanner can be used as a trip computer and can show you fuel consumption statistics! 13) For cars of the VAG group (Volkswagen, Audi, Skoda, Seat), built on the MQB and PQ26 platforms, encoding functions are available - setting hidden parameters of the car. 14) And one more thing - Car Scanner provides the widest variety of features for FREE across the App Store. The app requires a Wi-Fi or or Bluetooth 4.0 (Bluetooth LE) OBD2 ELM327 compatible adapter (device) to work. ELM327 devices plugs into the diagnostics socket in the car ang gives your phone access to car diagnostics. Recommended adapters brands: Kiwi 3, Viecar, V-Gate, Carista, LELink, Veepeak. If you buy one of the cheap china OBD2 ELM327 adapters from ebay / amazon, then make sure it’s not marked as v.2.1. This adapters are supported, but they have lot’s of bugs. PLEASE NOTE: Vehicle ECUs vary in the amount of sensors supported. This app can’t show you something, that is not provided by your car. Attention "bad" adapters! We faced the problem, that some adapters (often cheep Chinese clones), can’t connect to the smartphone or the car. Some of them can even make your car engine work unstable, often lost connection, increase time lag when reading data. So, we recommend you to use genuine ELM327 or recommended adapter brands. Car Scanner ELM OBD2 is free but to unlock all the features, a one-time purchase or a subscription is required. Under no circumstances will the developer of this application be held responsible for incidents resulting from the use and/or interpretation of the data in the application. If you have any issues, you can always contact developer using Settings - Contact developer in the app or just send email to wp_soft@outlook.com Car Scanner ELM OBD2 for iOS Terms of use can be found at https://www.carscanner.info/ios-tos/
CDDK
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使用CCDK手机APP或者遥控钥匙,远程启动允许您在车辆外面启动引擎;此外,远程启动根据您的空调预设温度激活,为您提供一个舒适的车内环境;另外,远程启动在寒冷的天气可以通过预设空调出风口方向和空调温度,清理挡风玻璃上的霜和雾和雪。作为便利,APP可以远程打开门锁和上锁以及开启后备箱等功能,在你离开车辆时,依旧可以为家人打开,方便取车上的物品;同时APP为你提供车辆的保养和保险等时间里程记录,你可以在预设之后,在APP里面看到这些信息。 APP是你的车辆秘书,我们会努力在安全和实用上提供后期可能的升级。
Screenshots
Verdict
The clearest difference is in-app purchases: CDDK at none against Car Scanner ELM OBD2's 5. CDDK also leads on ads (none vs shown). Car Scanner ELM OBD2's advantage is update cadence (every 5 days vs every 3 months) and iOS requirement (13.0 vs 15.6). On price 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. Car Scanner ELM OBD2 sells 5 in-app purchases, starting at $3.99 per 6 months. CDDK asks for nothing beyond the download.
Car Scanner ELM OBD2 ships an update every 5 days, CDDK every 3 months. The most recent releases landed on November 5, 2026 and November 3, 2026 respectively.
| Parameter | Car Scanner ELM OBD2 | CDDK |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (33K ratings) — better | — |
| Positive reviews | 81.4% of reviews | — |
| Number of ratings | 33K — better | — |
| Update frequency | Every 5 days — better | Every 3 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 181 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Stanislav Svistunov | 深圳市创艺慧云信息有限公司 |
Bugs and requests
Car Scanner ELM OBD2
Reported bugs
3 issues- Unable to connect to certain vehicle models
- Incorrect fuel economy calculations
- Sensor data not updating properly in some cases
Requested features
5 requests- Add support for more vehicle profiles
- Improve CarPlay integration
- Allow custom dashboard templates
- Add option to automatically save data logs
- Expand sensor coverage, especially for transmissions and ABS
CDDK
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Car Scanner ELM OBD2
- Car Scanner Pro (6 months)$3.996 Months
- Car Scanner Pro (1 year)$4.991 Year
- Car Scanner Pro (low price)$6.99
- Car Scanner Pro (mid price)$6.99
- Car Scanner Pro (forever)$7.99
CDDK
No in-app purchases









