# PureScan vs 错题本

The clearest difference is iOS requirement: 错题本 at 13 against PureScan's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | PureScan | 错题本 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/purescan-pdf-document-scanner/id6789188388/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free | — |
| Size | 5 MB | 13 MB |
| Requires iOS | 17.0 | **13** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Anwa Leo](https://appshunter.io/developer/548912964) | [媛媛 钱](https://appshunter.io/developer/1869024065) |

## What reviewers say

### PureScan

[App page](https://appshunter.io/ios/app/purescan-pdf-document-scanner/id6789188388)

This app is a privacy-focused document scanner that performs all operations locally on your device. It offers on-device OCR for full-text search and creates searchable PDFs without requiring an account or internet access.

**Highlights:** 100% On-Device Scanning, Instant Full-Text Search, Searchable PDF Export, Smart Capture & Perspective Crop, On-Device PDF Password Protection, Multi-Language OCR

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

**In-app purchases:** none


### 错题本

[App page](https://appshunter.io/ios/app/id6793146293)

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

**In-app purchases:** none


## Frequently asked questions

### Is PureScan free?

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

### Is 错题本 free?

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

### Do PureScan or 错题本 have ads?

Neither PureScan nor 错题本 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.*