Red Sheet / Red Filter app analytics for January 23

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