# Right PDF Reader — Annotate, Share, Manage

> Comprehensive PDF reader with annotation, management, and sharing capabilities. (iPhone/iPad app by ZEON Corp.)

- Source: https://appshunter.io/ios/app/right-pdf-reader/id690338821 (this page in markdown: same URL + `.md`)
- Developer: [ZEON Corp](https://appshunter.io/developer/528554283)
- Category: Productivity, Utilities
- Price: Free
- Rating: 4.60/5 from 5 App Store ratings · 13 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 79 MB
- Languages: English, French, German, Japanese, Korean, Chinese, Chinese
- Released: 2013-09-13
- Data updated: 2026-07-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/right-pdf-reader/id690338821/reviews.md

## What is Right PDF Reader?

Right PDF Reader goes beyond a free PDF reader app. Created by a team of professionals in the PDF software business since 1993, Right PDF Reader has a simple UI that is easy to navigate and more features than average free readers.

PDF Viewing
- Fast document open speed
- Browse lets you view PDFs in the device or iCloud
- Supported thumbnail view
- View PDF portfolio, comment, attachment and protected document
- Single page view or continuous view available
- Fit page width or whole page are also available under single page view
- Use Day/Night mode to adjust brightness
- After tapping page number, you can enter a number and jump to that page directly. 
- Quickly add and edit Bookmarks and Marks
- Search document

Note and Comments
- Use highlight, cross-out and underline to annotate PDF with customizable color and opacity
- Note lets you to add text comment anywhere in PDF
- Use Draw Tools to mark up PDF with color, thickness and opacity of your choice. Move and undo are also supported
- Batch remove comments
 
Document Management
- Create folder to organize PDFs better
- Move or copy multiple documents to a folder
- Compress multiple documents or folders, or extract any package quickly
- Rename document
- Attach one or multiple PDFs to an e-mail
- Select and delete multiple documents
 
Online Sharing
- Get documents in and out of Dropbox
- Add WebDAV servers to upload/download documents easily
- Access documents in Gaaiho PDF online or upload documents directly to the app (permissions required), breaking the barrier between computer and your iPhone/iPad

Handwritten signature
- You can create a handwritten signature by drawing, using an image, or taking a photo
- Sign anywhere in document

Other Features
- Fill a form
- Use “open in” to share PDF files with other applications
- Auto-memorize the point you quitted reading last time 
- Protect PDF with an open password
- Print document

## Key features

- Fast PDF viewing
- Annotation tools (highlight, draw, text)
- Document organization with folders
- Cloud storage integration (Dropbox, WebDAV)
- Handwritten signature creation
- Form filling
- Password protection

## Recent user reviews (10 of 13)

All indexed reviews: https://appshunter.io/ios/app/right-pdf-reader/id690338821/reviews.md

### 4/5 — Better than the others

*2023-12-31*

This one is better than the other free ones on Appstore, by far. I’ve tried them all and deleted them. This is the only one worth keeping.

**Developer response:** Thank you! We are glad you like it!

### 5/5 — Best PDF App Available

*2022-12-14*

I have tested literally 40-50 pdf reader apps.
This one stands out like a beacon. 
Beautiful interface, incredibly powerful and so user friendly.
I use it daily and I’m astonished how good it is. 
Cheers 
Brenton

**Developer response:** Thank you for your five-star review. We glad you liked it! Cheers~

### 5/5 — Gaaiho was a better name

*2022-06-07, version 3.0.0*

But still the best pdf viewer

### 5/5 — Always crash when open multiple pages button

*2022-05-28, version 3.0.0*

Always crash when open multiple pages button

### 4/5 — 無法點選連結附件

*2021-08-13, version 2.0.0*

如題，謝謝

### 3/5 — Love it

*2021-02-06, version 2.0.0*

But I really really wish you could make a MacOS app I have a 2019 MacBook Air and would love to use it on there

### 5/5 — you are my hero

*2020-07-13, version 1.9.1*

unique free and useful pdf reader for everyone,you can transform file through wifi to cellphone,all is free. tks great creator!

### 4/5 — 無法連上Dropbox

*2016-11-27, version 1.8.0*

點選dropbox選項，但一直出現錯誤訊息，想請問該如何連線呢？

### 4/5 — 太棒了，令人驚豔，但...

*2016-07-16, version 1.7.1*

你們作出了真的很棒的APP，但若能夠加上打字功能就更完美了！付費我都樂意，說真的，我支持你們收費。

### 5/5 — Simple and useful

*2014-12-23, version 1.6.0*

Easy to use

## Frequently asked questions about Right PDF Reader

### What devices does Right PDF Reader support?

Right PDF Reader is available for iPhone, iPad, and iPod. It is designed to work seamlessly across these Apple devices.

### How often is Right PDF Reader updated?

The latest version, 4.2.0, was last updated on 2025-10-10. Updates ensure the app remains compatible with the latest operating systems and includes new features or bug fixes.

### What is the age rating for Right PDF Reader?

Right PDF Reader has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

### Can I organize my PDFs with Right PDF Reader?

Yes, Right PDF Reader allows you to create folders to organize your PDFs better. You can also move, copy, and delete multiple documents at once.

### Does Right PDF Reader have ads?

No, Right PDF Reader does not contain advertisements. It offers an ad-free experience for users.

### How can I share documents using Right PDF Reader?

You can share documents by attaching PDFs to emails, uploading them to cloud services like Dropbox or WebDAV, or using the 'open in' feature to share with other applications.

### What annotation tools are available in Right PDF Reader?

Right PDF Reader offers a variety of annotation tools including highlighting, cross-out, underlining, and drawing with customizable colors and opacity. You can also add text comments.

### What do users think of Right PDF Reader?

Users generally have a positive experience with Right PDF Reader, as reflected in its high rating of 4.6 stars from 5 ratings.

## Version history (last 5 releases)

### 4.2.0 — 2025-10-10

1. Updated Dropbox SDK to improve integration security.
2. Adapted to the windowing system of iPadOS 26.
3. Various bug fixes.

### 4.1.0 — 2024-03-05

OneDrive support: you can now open PDF files in linked accounts and keep the changes in sync.
Improved sync for Dropbox and WebDAV file .
Fixed crash issue when clicking "Pencil" tool in iPadOS 16.1.

### 4.0.0 — 2022-12-27

1. Added Scan feature: you can now scan documents/pictures directly or select images, and use edit tools to create high-quality PDF files.
2. Added OCR feature: you can now run OCR on scanned documents so as to search and reuse its contents.
3. Various bug fixes

### 3.0.0 — 2022-05-23

**Rebranding: “Gaaiho” has been changed to “Right PDF” starting from version 3.0.

1.	Added handwritten signature.
2.	Added form filling feature.
3.	Redesigned color palette and line thickness UI.
4.	Added Browse to Document tab for you to view documents in the device or iCloud.
5.	Added thumbnail feature.
6.	Improved Bookmarks: (1) Outlines renamed as Bookmarks. Bookmarks created in the Windows version will be shown here, but are read-only; (2) Bookmarks renamed as Marks. Marks created on the device will be shown here, and you can edit or delete them. Also note that Mark data are stored in the device instead of PDF. 
7.	iOS 15 compatible.
8.	Various bug fixes.

### 2.0.0 — 2021-02-05

1. Updated installer to make it compatible with both iPhone and iPad.
2. Added Handwritten signature.
3. Supported iPhone 12.

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## More apps by ZEON Corp

- [Teampel](https://appshunter.io/ios/app/teampel/id943696067)

All apps by ZEON Corp: https://appshunter.io/developer/528554283

## Related topics

[zeon corp](https://appshunter.io/ios/topics/zeon-corp)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-07.*