# KDIAG vs Vechico

The clearest difference is in-app purchases: KDIAG at none against Vechico's 4. Vechico's advantage is update cadence (daily vs fortnightly) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Vechico sells 4 in-app purchases, starting at $2.99 per month. KDIAG asks for nothing beyond the download.

KDIAG ships an update fortnightly, Vechico daily. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | KDIAG | Vechico |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (20 ratings)](https://appshunter.io/ios/app/kdiag/id6450169808/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 30.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | Free | — |
| Size | 74 MB | 48 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [祖策 谢](https://appshunter.io/developer/983519195) | [Nicat Aliyev](https://appshunter.io/developer/1886513695) |

## 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


### Vechico

[App page](https://appshunter.io/ios/app/vechico/id6760895315)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monatlich | $2.99 | per month |
| Business Monatlich | $8.99 | per month |
| Pro Jährlich | $24.99 | per year |
| Business Jährlich | $89.99 | per year |


## Frequently asked questions

### Is KDIAG free?

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

### Is Vechico free?

Vechico is free to download, with in-app purchases available.

### Do KDIAG or Vechico have ads?

Neither KDIAG nor Vechico shows ads.

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

KDIAG ships an update fortnightly, and Vechico daily. Most recently, KDIAG was updated on October 24, 2026 and Vechico on October 25, 2026.

---

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