# Viecar vs ChkOBD OBD2 Analyzer

The clearest difference is rating: Viecar at 4.0 against ChkOBD OBD2 Analyzer's 3.0. Viecar also leads on in-app purchases (none vs 4) and update cadence (every 4 weeks vs every 3 months). ChkOBD OBD2 Analyzer's advantage is ratings volume (4 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. ChkOBD OBD2 Analyzer sells 4 in-app purchases, starting at $4.99 per month. Viecar asks for nothing beyond the download.

Viecar holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Viecar ships an update every 4 weeks, ChkOBD OBD2 Analyzer every 3 months. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Viecar | ChkOBD OBD2 Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/viecar/id1474737022/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 39 MB | 63 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Chaoyue Technology Development Co.,Ltd](https://appshunter.io/developer/1223781320) | [Check On-Board Diagnostics LLC](https://appshunter.io/developer/1511585010) |

## What reviewers say

### Viecar

[App page](https://appshunter.io/ios/app/viecar/id1474737022)

This app connects to your vehicle's ECU via Bluetooth to perform comprehensive diagnostics and health checks. It helps identify potential issues early, analyze fuel consumption, and track driving behavior for improved efficiency and safety.

**Highlights:** 360° vehicle physical examination, Early detection of vehicle sub-health, Historical fuel consumption analysis, Driving behavior recording and analysis, Bluetooth 4.0 dual-mode connectivity, Low power consumption

**Features:** macOS Compatibility

**In-app purchases:** none


### ChkOBD OBD2 Analyzer

[App page](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011)

Connect your iPhone or iPad to your car's engine to view vital data. Access basic engine values for free, with in-app purchases for advanced diagnostics, smog check readiness, VIN analysis, and error decoding.

**Highlights:** View engine values, In-app purchase for advanced data, Smog Check Assistant, VIN Analyzer, Error Decoder and Reset, Bluetooth adapter compatibility check

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Smog Check Assistant | $4.99 | per month |
| VIN Analyzer | $1.99 | one-time |
| Error Analyzer | $2.99 | one-time |
| Advance Engine Values | $4.99 | one-time |


## Frequently asked questions

### Is Viecar free?

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

### Is ChkOBD OBD2 Analyzer free?

ChkOBD OBD2 Analyzer is free to download, with in-app purchases available.

### Which has better reviews, Viecar or ChkOBD OBD2 Analyzer?

Viecar is rated higher. Viecar averages 4.0 out of 5 from 1 ratings, while ChkOBD OBD2 Analyzer averages 3.0 from 4 ratings.

### Do Viecar or ChkOBD OBD2 Analyzer have ads?

Neither Viecar nor ChkOBD OBD2 Analyzer shows ads.

### Which is updated more often, Viecar or ChkOBD OBD2 Analyzer?

Viecar ships an update every 4 weeks, and ChkOBD OBD2 Analyzer every 3 months. Most recently, Viecar was updated on October 11, 2026 and ChkOBD OBD2 Analyzer on October 13, 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.*