# Observer POS vs DocScan Pro

The clearest difference is in-app purchases: Observer POS at none against DocScan Pro's 3. DocScan Pro's advantage is iOS requirement (12.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DocScan Pro sells 3 in-app purchases, starting at $9.99 per 7 days. Observer POS asks for nothing beyond the download.

Observer POS ships an update every 2 months, DocScan Pro every 6 weeks. The most recent releases landed on September 10, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Observer POS | DocScan Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Size | 114 MB | 29 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [WHISPER INFORMATION TECHNOLOGY CO. L.L.C](https://appshunter.io/developer/1497453413) | [国瑞 孟](https://appshunter.io/developer/1720094053) |

## What reviewers say

### Observer POS

[App page](https://appshunter.io/ios/app/observer-pos/id1570650263)

**Features:** macOS Compatibility

**In-app purchases:** none


### DocScan Pro

[App page](https://appshunter.io/ios/app/docscan-pro-pdf-scanner-app/id6479390635)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DocScan Pro | $9.99 | per 7 days |
| DocScan Pro | $17.99 | per month |
| DocScan Pro | $39.99 | per 3 months |


## Frequently asked questions

### Is Observer POS free?

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

### Is DocScan Pro free?

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

### Do Observer POS or DocScan Pro have ads?

Neither Observer POS nor DocScan Pro shows ads.

### Which is updated more often, Observer POS or DocScan Pro?

Observer POS ships an update every 2 months, and DocScan Pro every 6 weeks. Most recently, Observer POS was updated on September 10, 2026 and DocScan Pro on September 12, 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.*