# PDFAI Scan vs TwiBlock

The clearest difference is in-app purchases: TwiBlock at none against PDFAI Scan's 3. PDFAI Scan's advantage is rating (5.0 vs 4.7). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. PDFAI Scan sells 3 in-app purchases, starting at $3.99 per 7 days. TwiBlock asks for nothing beyond the download.

PDFAI Scan holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 7 and 3 respectively.

## The numbers

| Metric | PDFAI Scan | TwiBlock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/pdfai-scan-document-scanner/id6654887952/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/twiblock/id6720723189/reviews) |
| Number of ratings | **7** | 3 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 56 MB | 2 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Duc Lai](https://appshunter.io/developer/1763002953) | [国辉 满](https://appshunter.io/developer/1513279085) |

## What reviewers say

### PDFAI Scan

[App page](https://appshunter.io/ios/app/pdfai-scan-document-scanner/id6654887952)

Transform your device into a smart document scanner with AI-powered study tools. Easily scan, convert, and enhance documents, then leverage AI for summaries, flashcards, and interactive quizzes. Listen to documents read aloud and share your work in various formats.

**Highlights:** AI-powered document scanning, OCR text extraction, AI study tools (summaries, flashcards, quizzes), Text-to-Speech functionality, Export to PDF, Word, Text, Images, iCloud sync across devices

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDFAI Scan Premium Weekly | $3.99 | per 7 days |
| PDFAI Scan Premium Monthly | $4.99 | per month |
| Premium Account(1 year) | $39.99 | per year |


### TwiBlock

[App page](https://appshunter.io/ios/app/twiblock/id6720723189)

Enhance your social media browsing by automatically detecting and removing ads and distracting UI elements. Enjoy a cleaner, faster, and more private experience focused on the content you care about.

**Highlights:** Blocks promoted tweets, Removes 'What's happening' and 'Who to follow', Hides 'Topics to follow', Protects personal information, Speeds up page loading, Streamlines browsing experience

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

**In-app purchases:** none


## Frequently asked questions

### Is PDFAI Scan free?

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

### Is TwiBlock free?

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

### Which has better reviews, PDFAI Scan or TwiBlock?

PDFAI Scan is rated higher. PDFAI Scan averages 5.0 out of 5 from 7 ratings, while TwiBlock averages 4.7 from 3 ratings.

### Do PDFAI Scan or TwiBlock have ads?

Neither PDFAI Scan nor TwiBlock 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.*