Comparison

OBD故障码助手 vs NexzScan

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

Head to head
About

OBD故障码助手

Features
Read full description

OBD故障码查询助手是一款为车主、修理工、汽车改装发烧友提供汽车故障码查询、汽车维修保养知识、维修引导的APP。用户可以及时更新最新的车型维修信息通告等。 现包含的故障码库可支持的车型有: 1.大众:桑塔纳、PASSET、A6L、tuguan(捷达、桑塔纳、宝来、PASSET、速腾、迈腾、A4/A4L、A6/A6L,Q5、Q7、tuguan) 2.丰田:凯美瑞、卡罗拉、威驰 3.本田:雅阁、CRV、思域 4.通用:GL8、凯越、科鲁兹 5.福特:福克斯 6.日产:轩逸、天籁 7.现代:伊兰特、索纳塔 8.起亚:K2、K5、狮跑 9.雪铁龙:C5、C3 10.标致:307、308、408、508 11.奔驰:C200,B200 等; 12.宝马:X1,X3 等; 13.克莱斯勒:300c 14.马自达:马3、马6 15.三菱:翼神 16.吉利:帝豪系列; 17.BYD:F3、F6 等等;

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.

Screenshots

OBD故障码助手3 screens
NexzScan3 screens

Verdict

The call

The clearest difference is update cadence: NexzScan at every 3 weeks against OBD故障码助手's every 2 months. OBD故障码助手's advantage is iOS requirement (7.1 vs 15.6). 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

OBD故障码助手 ships an update every 2 months, NexzScan every 3 weeks. Both last shipped on October 6, 2026.

Scorecard2 real differences · 8 level
OBD故障码助手 versus NexzScan: the parameters behind the verdict, then further details
ParameterOBD故障码助手NexzScan
PriceFreeFree
Rating—2.1 (27 ratings) — better
Positive reviews—7.1% of reviews
Number of ratings—27 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS7.1 — better15.6
Further details — not scored
Size24 MB141 MB
Age rating4+4+
Developer深圳市爱夫卡科技有限公司美泉 黄

In-app purchases

None

OBD故障码助手

No in-app purchases

None

NexzScan

No in-app purchases

Questions

Is OBD故障码助手 free?
OBD故障码助手 is free to download, with no in-app purchases.
Is NexzScan free?
NexzScan is free to download, with no in-app purchases.
Do OBD故障码助手 or NexzScan have ads?
Neither OBD故障码助手 nor NexzScan shows ads.
Which is updated more often, OBD故障码助手 or NexzScan?
OBD故障码助手 ships an update every 2 months, and NexzScan every 3 weeks. Most recently, OBD故障码助手 was updated on October 6, 2026 and NexzScan on October 6, 2026.

Other comparisons