# PDF Reader vs PDF比較・差分チェック

The clearest difference is in-app purchases: PDF比較・差分チェック at none against PDF Reader's 11. PDF比較・差分チェック also leads on ads (none vs shown). PDF Reader's advantage is update cadence (every 8 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. PDF Reader sells 9 in-app purchases, starting at $3.99 per 7 days. PDF比較・差分チェック asks for nothing beyond the download.

PDF Reader ships an update every 8 days, PDF比較・差分チェック every 2 months. The most recent releases landed on October 30, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | PDF Reader | PDF比較・差分チェック |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (753 ratings)](https://appshunter.io/ios/app/pdf-reader-editor-and-scanner/id6739480825/reviews)** | — |
| Number of ratings | **753** | — |
| Positive reviews | 37.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 118 MB | 4 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DAOWEI NETWORK TECHNOLOGY PTE.LTD.](https://appshunter.io/developer/1547755677) | [Toshihiro Nakao](https://appshunter.io/developer/1866546756) |

## What reviewers say

### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-editor-and-scanner/id6739480825)

This app provides comprehensive PDF management, including reading, editing, and scanning. It uses AI for intelligent document recognition, summarization, and conversion to various formats. Securely store and access your files in the cloud or from popular services.

**Highlights:** AI-powered PDF editing and summarization, Intelligent document scanning with OCR, Convert between PDF and other file formats, Annotate, sign, and fill PDF forms, Cloud storage integration (Google Drive, OneDrive), Merge, split, lock, and compress PDFs

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Week | $3.99 | per 7 days |
| One Week | $3.99 | per 7 days |
| One Week | $7.99 | per 7 days |
| One Week | $7.99 | per 7 days |
| One Month | $12.99 | per month |
| One Year | $49.99 | per year |
| One Year | $76.99 | per year |
| One Year | $76.99 | per year |
| Lifetime | $99.99 | one-time |


### PDF比較・差分チェック

[App page](https://appshunter.io/ios/app/pdf-mikurabe/id6794534595)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF Reader free?

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

### Is PDF比較・差分チェック free?

PDF比較・差分チェック is free to download, with no in-app purchases.

### Do PDF Reader or PDF比較・差分チェック have ads?

PDF Reader shows ads; PDF比較・差分チェック does not.

### Which is updated more often, PDF Reader or PDF比較・差分チェック?

PDF Reader ships an update every 8 days, and PDF比較・差分チェック every 2 months. Most recently, PDF Reader was updated on October 30, 2026 and PDF比較・差分チェック on October 22, 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.*