RefStack: Technical PDF Reader
Jump from Contents or Index
Free · In‑App Purchases
iPad
Reference technical PDFs faster.
View the table of contents or index in a pop-up while reading, then jump directly to the page you need.
Turn pages. Reference. Jump.
RefStack is a PDF reader for iPad designed not only for reading technical books and reference materials, but also for quickly finding and accessing the information you need.
Technical books are not always read from beginning to end.
“I want to check that explanation again.”
“I want to find the page where this term appears.”
“I want to move to another chapter while checking the table of contents.”
RefStack helps you move quickly to the page you need using the table of contents and index.
■ Read PDFs while checking the table of contents and index
While reading, you can display the table of contents or index pages in a pop-up.
You can check them without leaving the page you are currently reading, then quickly jump to the page you need.
■ Manage PDFs as a bookshelf
Use folders on your iPad or in iCloud Drive as bookshelves.
Organize technical books, manuals, reference materials, and other PDF files in one place.
■ Reading history and completion tracking
Keep track of PDFs you have opened and mark books as finished.
Even if you have a large technical book collection, you can easily see which books you are currently reading or referring to.
【Main Features】
・PDF viewer
・Use folders on iPad or iCloud Drive as bookshelves
・Reading history
・Reading completion tracking
【Subscription】
With a subscription, you can use the following features:
・Display table of contents pages in a pop-up
・Display index pages in a pop-up
The subscription automatically renews every month.
Privacy Policy
https://www.cloudsquare.jp/product/ios/privacy.html
Terms of Use
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Built with the latest OS SDK
- Improved the timing of the initial save of reading information
The developer, SHIN INABA, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- SHIN INABA
- Size
- 15.8 MB
- Category
- Books
- Compatibility
Requires iPadOS 26.0 or later.
- iPad
Requires iPadOS 26.0 or later.
- iPad
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Full features $0.99
- Copyright
- © 2026 cloudsquare.jp