# QuietScan vs ReadOS

The clearest difference is in-app purchases: QuietScan at none against ReadOS's 2. QuietScan also leads on iOS requirement (17.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. ReadOS sells 2 in-app purchases, starting at $19.99 per year. QuietScan asks for nothing beyond the download.

## The numbers

| Metric | QuietScan | ReadOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (8 ratings)](https://appshunter.io/ios/app/reados/id6796672534/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | — | Freemium |
| Size | 14 MB | 993 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Keisuke Ueda](https://appshunter.io/developer/1881427681) | [秀芳 王](https://appshunter.io/developer/1893898139) |

## What reviewers say

### QuietScan

[App page](https://appshunter.io/ios/app/quietscan-pdf-scanner/id6765815673)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ReadOS

[App page](https://appshunter.io/ios/app/reados/id6796672534)

This app is an AI-powered workspace for iPad that helps you read, research, and create. It connects your source materials and project context, allowing you to move seamlessly from understanding to creation. Features include AI summarization, knowledge mapping, and document analysis.

**Highlights:** AI-powered research agent, Contextual reading and note-taking, Knowledge mapping and visualization, Document, spreadsheet, and presentation creation, Web browsing and data analysis, Audio and video transcription, Multi-step task automation

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReadOS Pro Annual | $19.99 | per year |
| ReadOS Pro Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is QuietScan free?

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

### Is ReadOS free?

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

### Do QuietScan or ReadOS have ads?

Neither QuietScan nor ReadOS 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.*