Comparison

NexzScan vs iCarScan

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

NexzScan

This tool helps diagnose car engine issues by connecting to your vehicle's OBD port. It provides detailed reports on error codes, their causes, and live data, making car repair more efficient and accessible. The app offers a user-friendly interface and comprehensive vehicle support.

Highlights
  • Read and clear engine codes
  • Detailed diagnosis reports
  • Customized live data display
  • Powerful DTC definition database
  • One-key app updates
  • Bluetooth 4.2 connection
Features
Read full description

NexzScan OBD2 Scanner is a high cost-effective, portable and professional tool which supports almost all gasoline cars after 2000 till now, making car repair easier. It is designed with VCI+ FREE App with powerful database and detailed diagnosis report, offering you not only the code definition, but a list of possible causes, greatly increases the repair efficiency. It is easy to operate, just plug the sensor to the OBD port and pair it with your phone through Bluetooth 4.2. From then on, do no need to worry about the Check Engine Light on anymore. Highlight: - High Cost-effective Device: Compared with the handheld tools and other scanners, NexzScan is designed with the character of higher cost-effective, more customized and user-friendly, saving you both time and money. - Enhanced OBD Diagnosis: Fully covers OBD diagnosis Modes, not only includes read & clear codes, freeze frame, but O2 sensor, Smog Check, Battery Test, MIL Status, etc. all available. - Detailed Diagnosis Report: For each DTC, the code definition as well as possible causes are listed clearly by simple and easy-to-understand explanation instead of confusing terms. - Powerful Database: Exclusively provides nearly 40K kinds DTC definition & vehicle information query, leading the industry. - Customized Live Data: Diversified live data display method: digital, dashboard and graph display. Meanwhile, you can merge multi-parameters in one graph and see how they affect each other. - Data Mange: Provides the platform to review the stored data in time, both images and videos. - One-Key Update in App: No PC, no USB, no SD card are needed. Click the upgrade information and update it into the latest version within the App in time. Features: -Bluetooth 4.2 fast and stable connection. -Support all standard OBD2 protocols: SAE_J1850(PWM,VPW), ISO_9141-2, ISO_14230-4(KWP, KWP-FAST), ISO_15765-4(CAN, CAN-B,CAN-C,CAN-D), SAE_J1939(CAN), USER1,USER2. -Wide vehicle coverage: Works on any gasoline car (Japan, Canada, US, EU, etc.)with standard OBD2 DLC,including 57 brands. -Codes reading: retrieves confirmed codes, pending codes and current codes. -Supports multi ECU code reading: from 7E8 to 7EF(including Engine, Transmission and other control modules). -Enhanced DTC analysis: code definition, code description, code symptoms, code causes listed clearly . -Clear and visualized UI: provides you with easy-to-operate guide, no confusing terms. Function: -Read and Clear Codes: Read and clear engine codes. -Freeze Frame: A snapshot of the vehicle when the code is stored. -Live Data: DIY diversified PID display methods and multi-parameters comparison. -O2 Sensor: Check the vehicle O2 sensor values. -Smog Check: Check if the vehicle is ready for a smog or emissions test. -MIL Status: Diagnose the car when the Malfunction Indicator Lamp is on. -Mode 6: Advanced test results (like misfire counts) for on-board diagnostic system monitors. -Battery Test: Show battery voltage and comment battery status.

About

iCarScan

Access professional-level automotive diagnostic functions, including reading and clearing fault codes, viewing live data, and performing special tests. Supports a wide range of vehicle manufacturers with automatic VIN recognition and one-key diagnosis. Generates detailed diagnostic reports for informed maintenance.

Highlights
  • OE-level professional functions
  • Full OBD II diagnosis
  • Support for 39+ manufacturers
  • Automatic VIN reading
  • One-key diagnosis
  • Fault code interpretation
  • Diagnostic report generation
Features
Read full description

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.

Screenshots

NexzScan3 screens
iCarScan2 screens

Verdict

The call

The clearest difference is rating: iCarScan at 3.8 against NexzScan's 2.1. iCarScan also leads on iOS requirement (9.0 vs 15.6). NexzScan's advantage is update cadence (every 3 weeks vs every 5 months). On price, review sentiment, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

iCarScan holds the better App Store score, 3.8 against 2.1. Both are backed by a comparable volume of ratings — 27 and 14 respectively. Written reviews complicate that: 7% of NexzScan's written reviews are positive against 0% of iCarScan's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

NexzScan ships an update every 3 weeks, iCarScan every 5 months. The most recent releases landed on October 25, 2026 and October 21, 2026 respectively.

Scorecard3 real differences · 7 level
NexzScan versus iCarScan: the parameters behind the verdict, then further details
ParameterNexzScaniCarScan
PriceFreeFree
Rating2.1 (27 ratings)3.8 (14 ratings) — better
Positive reviews7.1% of reviews — better0.0% of reviews
Number of ratings27 — better14
Update frequencyEvery 3 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.69.0 — better
Further details — not scored
Size142 MB324 MB
Age rating4+17+
Developer美泉 黄THINKCAR INC

Customer experience

NexzScan

All ratings27 ratings
Positive25.9%
Neutral3.7%
Negative70.4%
Written reviews14 reviews
Positive7.1%
Neutral0.0%
Negative92.9%

iCarScan

All ratings14 ratings
Positive71.4%
Neutral0.0%
Negative28.6%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

NexzScan

No in-app purchases

None

iCarScan

No in-app purchases

Questions

Is NexzScan free?
NexzScan is free to download, with no in-app purchases.
Is iCarScan free?
iCarScan is free to download, with no in-app purchases.
Which has better reviews, NexzScan or iCarScan?
iCarScan is rated higher. NexzScan averages 2.1 out of 5 from 27 ratings, while iCarScan averages 3.8 from 14 ratings.
Do NexzScan or iCarScan have ads?
Neither NexzScan nor iCarScan shows ads.
Which is updated more often, NexzScan or iCarScan?
NexzScan ships an update every 3 weeks, and iCarScan every 5 months. Most recently, NexzScan was updated on October 25, 2026 and iCarScan on October 21, 2026.

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