Red Sheet / Red Filter
Memorize notes, text and PDFs
Free · In‑App Purchases · Designed for iPad
Import PDFs exported from note apps like GoodNotes and use them for memorization.
Hide colored text or cover any area with blocks to create your own study sheets and switch visibility
with a single tap. Designed for simple, fast, and flexible memorizing on your phone or tablet.
PDF memorization
- Import PDFs from note apps or cloud storage
- Hide red, blue, orange, or other colored text for red-sheet style study
- Use adjustable blocks to mask any area even when colors are not available
- Scroll vertically across pages for smooth review
Photo and image memorization
- Add notebook photos, handouts, or whiteboard shots
- Hide words or formulas just like placing a sheet over the page
- Tap to show or hide only the parts you want to memorize
Flashcards and word lists
- Create simple vocabulary lists
- Hide definitions or words for quick self-testing
Study tools
- One-tap show and hide for efficient review
- Create multiple blocks quickly for consecutive items
- Auto-align blocks for clean organization
- Zoom without shifting your hidden areas
- Swipe between pages and images
Great for:
- Test prep and school study
- Language learning and vocabulary practice
- Certification exams
- Any subject that requires memorization
How to use:
1. Import a PDF or add photos
2. Hide text by color or place blocks on the parts you want to memorize
3. Tap to show or hide while reviewing
4. Repeat and study at your own pace
Terms of Service
https://hidevoicy.com/en/tos
Privacy Policy
https://hidevoicy.com/en/privacy
We’ve enhanced iPad & PDF memorization features!
Import the PDFs you want to study into this memorization app to memorize colored text like red highlights, hide content to test yourself, or turn them into flashcards.
If you take notes with apps like GoodNotes or Notability, try exporting your notes as PDFs and memorizing them—it’s a great way to study more effectively!
Of course, our flashcard and photo memorization features are also super handy, so be sure to try them too.
The developer, Foodmenu.world Inc., 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Foodmenu.world Inc.
- Size
- 141.1 MB
- Category
- Education
- Compatibility
Requires iOS 15.5 or later.
- iPhone
Requires iOS 15.5 or later. - iPad
Requires iPadOS 15.5 or later. - iPod touch
Requires iOS 15.5 or later. - Mac
Requires macOS 12.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
English and 6 more
- English, German, Hindi, Indonesian, Japanese, Korean, Spanish
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Basic Plan $5.99
- Monthly Value Plan $4.99
- Monthly Super Saver Plan $2.99
- Monthly Special plan $2.99
- 3 Month Plan - V 3.1.5 needed $9.99
- Half year plan (Sale) $17.99
- Half year plan - V2.9.0 needed $22.99
- Copyright
- 赤シートアプリ ©︎2026 Foodmenu.world Inc.