Free and no ads! Let Gaaiho PDF handle your mobile PDF needs.

Let Gaaiho PDF handle your mobile PDF needs.

Gaaiho PDF is a free PDF app with flat-design UI. You can choose from 3 display modes that best suit your needs: list, thumbnail and cover flow, taking mobile PDF reading to a whole new level. With over 25 years in the PDF business, ZEON’s Gaaiho PDF will give you a high-quality mobile PDF reading experience with a rich array of functions.

PDF Viewing
-Industry-leading document open speed
-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 bookmark.
-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 available), 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
-Use “open in” to share PDF files with other applications
-Auto-memorize the point you quitted reading last time
-You may set up an open password for Gaaiho PDF app
-Print document

What’s New

Version 2.0.0

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

Ratings and Reviews

4.5 out of 5
4 Ratings

4 Ratings

ineedthewholewirld ,

you are my hero

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

Underratedtoxic12 ,

Love it

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

Boooooooooooooooo1111 ,


Real awesome and useful, AND it's free!

App Privacy

The developer, ZEON Corp, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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