# ZAP PDF Plus vs Auto PDF

The clearest difference is ads: ZAP PDF Plus at none against Auto PDF's shown. ZAP PDF Plus also leads on update cadence (fortnightly vs every 2 months) and rating (4.5 vs 4.3). Auto PDF's advantage is ratings volume (378 vs 25). On price, 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.

ZAP PDF Plus holds the better App Store score, 4.5 against 4.3. That said, the two scores are not equally well evidenced: Auto PDF has 378 ratings behind it against 25, so its average is the more settled of the two.

ZAP PDF Plus ships an update fortnightly, Auto PDF every 2 months. The most recent releases landed on September 14, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | ZAP PDF Plus | Auto PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (25 ratings)](https://appshunter.io/ios/app/zap-pdf-plus-scan-and-reader/id6502543748/reviews)** | [4.3 (378 ratings)](https://appshunter.io/ios/app/auto-pdf-ai-ocr-scan-edit/id6751479281/reviews) |
| Number of ratings | 25 | **378** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free** | Ad-supported |
| Size | 45 MB | 25 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Chengdu Dance Elephant Technology Co., LTD.](https://appshunter.io/developer/1741861571) | [MA CHENG BUSINESS LIMITED](https://appshunter.io/developer/1858830867) |

## What reviewers say

### ZAP PDF Plus

[App page](https://appshunter.io/ios/app/zap-pdf-plus-scan-and-reader/id6502543748)

This app offers a comprehensive suite of tools for managing and editing PDF documents, alongside AI-powered photo enhancement features. It allows for quick document processing, image retouching, and efficient file compression, all within a user-friendly interface.

**Highlights:** Intuitive PDF editor, Annotation, merging, and splitting tools, AI-powered photo retouching, Image and video compression, No watermarks

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

**In-app purchases:** none


### Auto PDF

[App page](https://appshunter.io/ios/app/auto-pdf-ai-ocr-scan-edit/id6751479281)

Transform your phone into a portable scanner and editor. Quickly convert images to PDFs, merge or split documents, and extract text from photos using advanced OCR. Share your files instantly via email or social media.

**Highlights:** Intelligent Scan and Convert, Image to PDF creation, Merge and split PDFs, OCR text extraction, Fast PDF sharing, Built-in QR code scanner

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

**In-app purchases:** none


## Frequently asked questions

### Is ZAP PDF Plus free?

ZAP PDF Plus is free to download, with no in-app purchases.

### Is Auto PDF free?

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

### Which has better reviews, ZAP PDF Plus or Auto PDF?

ZAP PDF Plus is rated higher. ZAP PDF Plus averages 4.5 out of 5 from 25 ratings, while Auto PDF averages 4.3 from 378 ratings.

### Do ZAP PDF Plus or Auto PDF have ads?

Auto PDF shows ads; ZAP PDF Plus does not.

### Which is updated more often, ZAP PDF Plus or Auto PDF?

ZAP PDF Plus ships an update fortnightly, and Auto PDF every 2 months. Most recently, ZAP PDF Plus was updated on September 14, 2026 and Auto PDF on September 21, 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.*