# KDIAG vs VSensors

The clearest difference is rating: KDIAG at 3.3 against VSensors's 2.3. KDIAG also leads on review sentiment (31% vs 0%) and update cadence (fortnightly vs every 7 months). VSensors's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

KDIAG holds the better App Store score, 3.3 against 2.3. Both are backed by a comparable volume of ratings — 20 and 6 respectively. Written reviews point the same way: 31% of KDIAG's written reviews are positive against 0% of VSensors's.

KDIAG ships an update fortnightly, VSensors every 7 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | KDIAG | VSensors |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (20 ratings)](https://appshunter.io/ios/app/kdiag/id6450169808/reviews)** | [2.3 (6 ratings)](https://appshunter.io/ios/app/vsensors/id6458102676/reviews) |
| Number of ratings | **20** | 6 |
| Positive reviews | **30.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 7 months |
| Monetization | Free | Free |
| Size | 74 MB | 43 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [祖策 谢](https://appshunter.io/developer/983519195) | [ZHANGZHOU EASTERN INTELLIGENT METER CO., LTD.](https://appshunter.io/developer/1064839954) |

## What reviewers say

### KDIAG

[App page](https://appshunter.io/ios/app/kdiag/id6450169808)

This app offers comprehensive automotive fault detection and OBD functions for various car brands. It provides professional diagnostic services to quickly identify and resolve car issues, making driving safer and smoother for enthusiasts and professionals alike. The app supports 8 languages and is free to use.

**Highlights:** Comprehensive automotive fault detection, OBD functions, System fault diagnosis for mainstream brands, Free to use, Supports 8 languages, Professional diagnostic services

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### VSensors

[App page](https://appshunter.io/ios/app/vsensors/id6458102676)

This application connects to multiple Bluetooth sensors to monitor environmental conditions like illumination, temperature, humidity, and noise. It displays data in maximum/minimum modes, line charts, and tables, with export options available. Requires Vevor Bluetooth Sensor Series and iOS 9.0 or later.

**Highlights:** Connects multiple Bluetooth sensors simultaneously, Monitors illumination, temperature, humidity, and noise, Maximum and minimum display modes, Line chart and data table views, Data export in various formats

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KDIAG free?

KDIAG is free to download, with no in-app purchases.

### Is VSensors free?

VSensors is free to download, with no in-app purchases.

### Which has better reviews, KDIAG or VSensors?

KDIAG is rated higher. KDIAG averages 3.3 out of 5 from 20 ratings, while VSensors averages 2.3 from 6 ratings.

### Do KDIAG or VSensors have ads?

Neither KDIAG nor VSensors shows ads.

### Which is updated more often, KDIAG or VSensors?

KDIAG ships an update fortnightly, and VSensors every 7 months. Most recently, KDIAG was updated on October 24, 2026 and VSensors on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*