Comparison

NexzScan vs MY汽车卫士

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

MY汽车卫士

Features
Read full description

主要功能包括: 【实时胎压监测】当胎压异常时会实时预警,胎压盒子硬件和app会同时双报警。 胎压监测工作原理:当某轮胎的气压降低时,车辆的重量会使该轮的滚动半径将变小,导致其转速比其他车轮快。通过比较轮胎之间的转速差别,以达到监测胎压的目的。 【故障检测】可对汽车发动机控制系统、点火控制系统、供电控制系统、润滑控制系统、冷却控制系统、燃油及空气系统等进行详细体检,行车忧患早知道。 【查看数据流】可查看100-200项数据流。 【清除故障码】能对体检中检测出的故障码进行清除。 【仪表盘扩展】炫酷的仪表界面,扩展原车信息,体验驾驶豪车感。 【HUD相关】我司HUD产品可以使用该APP进行相关设置。

Screenshots

NexzScan3 screens
MY汽车卫士3 screens

Verdict

The call

The clearest difference is iOS requirement: MY汽车卫士 at 9.0 against NexzScan's 15.6. 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

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

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

Scorecard1 real difference · 9 level
NexzScan versus MY汽车卫士: the parameters behind the verdict, then further details
ParameterNexzScanMY汽车卫士
PriceFreeFree
Rating2.1 (27 ratings) — better—
Positive reviews7.1% of reviews—
Number of ratings27 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.69.0 — better
Further details — not scored
Size142 MB76 MB
Age rating4+4+
Developer美泉 黄建玲 张

In-app purchases

None

NexzScan

No in-app purchases

None

MY汽车卫士

No in-app purchases

Questions

Is NexzScan free?
NexzScan is free to download, with no in-app purchases.
Is MY汽车卫士 free?
MY汽车卫士 is free to download, with no in-app purchases.
Do NexzScan or MY汽车卫士 have ads?
Neither NexzScan nor MY汽车卫士 shows ads.
Which is updated more often, NexzScan or MY汽车卫士?
NexzScan ships an update every 3 weeks, and MY汽车卫士 every 3 weeks. Most recently, NexzScan was updated on October 25, 2026 and MY汽车卫士 on October 26, 2026.

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