# ChkOBD OBD2 Analyzer vs OBD2 ScanzFST

The clearest difference is rating: ChkOBD OBD2 Analyzer at 3.0 against OBD2 ScanzFST's 2.5. OBD2 ScanzFST's advantage is in-app purchases (none vs 4) and iOS requirement (10.0 vs 13.0). On price, ratings volume, 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. OBD2 ScanzFST asks for nothing beyond the download.

ChkOBD OBD2 Analyzer holds the better App Store score, 3.0 against 2.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

## The numbers

| Metric | ChkOBD OBD2 Analyzer | OBD2 ScanzFST |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/chkobd-obd2-analyzer/id1511585011/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/obd2-scanzfst/id1564899294/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 63 MB | 317 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Check On-Board Diagnostics LLC](https://appshunter.io/developer/1511585010) | [美泉 黄](https://appshunter.io/developer/1465544231) |

## What reviewers say

### 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 |


### OBD2 ScanzFST

[App page](https://appshunter.io/ios/app/obd2-scanzfst/id1564899294)

This professional diagnostic scan tool offers a portable VCI+APP solution for efficient car diagnostics. It provides full-system scans, code reading/clearing, live data, and special maintenance functions for a wide range of vehicle models.

**Highlights:** Full-system quick scan, Read/clear codes and live data, Special maintenance functions (Oil Reset, TPMS, ABS, etc.), One-key DTC Query and VIN Query, One-key data management, In-app updates

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ChkOBD OBD2 Analyzer free?

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

### Is OBD2 ScanzFST free?

OBD2 ScanzFST is free to download, with no in-app purchases.

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

ChkOBD OBD2 Analyzer is rated higher. ChkOBD OBD2 Analyzer averages 3.0 out of 5 from 4 ratings, while OBD2 ScanzFST averages 2.5 from 2 ratings.

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

Neither ChkOBD OBD2 Analyzer nor OBD2 ScanzFST shows ads.

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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.*