# CNAPP Inspector App vs ChkOBD OBD2 Analyzer

The clearest difference is in-app purchases: CNAPP Inspector App at none against ChkOBD OBD2 Analyzer's 4. CNAPP Inspector App also leads on update cadence (every 3 weeks vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

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

CNAPP Inspector App ships an update every 3 weeks, ChkOBD OBD2 Analyzer every 3 months. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | CNAPP Inspector App | ChkOBD OBD2 Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (4 ratings)](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 63 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VHR Data LLC](https://appshunter.io/developer/1478820759) | [Check On-Board Diagnostics LLC](https://appshunter.io/developer/1511585010) |

## What reviewers say

### CNAPP Inspector App

[App page](https://appshunter.io/ios/app/cnapp-inspector-app/id1478820760)

**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 CNAPP Inspector App free?

CNAPP Inspector App 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.

### Do CNAPP Inspector App or ChkOBD OBD2 Analyzer have ads?

Neither CNAPP Inspector App nor ChkOBD OBD2 Analyzer shows ads.

### Which is updated more often, CNAPP Inspector App or ChkOBD OBD2 Analyzer?

CNAPP Inspector App ships an update every 3 weeks, and ChkOBD OBD2 Analyzer every 3 months. Most recently, CNAPP Inspector App was updated on October 17, 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.*