LingRoll is an all-in-one reading app built for people who love both reading and listening. It supports multiple ebook formats and advanced TTS features, giving you a smooth, flexible, and detailed reading experience.
Core Features
• Format support: TXT, DOC, DOCX, EPUB, MOBI, AZW3, PDF
• Smart listening: System TTS, Azure/Edge TTS, and MiMo TTS
• Professional layout: Fully customizable reading interface
• File management: Folder-based library, sorting, search, and recent imports
• Statistics: Track reading and listening habits
Detailed Features
1. File Support
• Supports TXT, DOC, DOCX, EPUB, MOBI, AZW3, PDF. DRM-protected files are not supported
• Auto-detects text encoding and supports manual encoding selection
• Extracts encrypted or unencrypted RAR, ZIP, and 7Z archives
• PDF text extraction and OCR for scanned documents
• Import via iTunes File Sharing, iCloud Drive, or WiFi transfer
2. Listening
• Built-in iOS TTS voices
• Azure/Edge TTS and MiMo TTS neural voices
• Natural language recognition with voice matching for Azure/Edge TTS
• Narration and dialogue detection with separate voices
• TTS text replacement for pronunciation, terms, and symbols
• Long-paragraph optimization for smoother playback
• Auto skip trailing silence
• Custom background music, speed, pitch, and volume
• Sleep timer
• Listen while reading, scroll freely, or follow the playing paragraph
• Home screen display during background playback
• Progress styles: highlight, underline, line-by-line highlight, sentence underline
• Headphone controls and custom lock screen display
• Pre-download full-book audio
• Offline TTS audio duration statistics
3. Reading
• System fonts and custom font installation
• Adjustable spacing, margins, first-line indent, hanging indent, and more
• Custom background image with optional scroll-follow effect
• Custom themes with RGBA colors
• Chinese conversion between Simplified, Traditional, Hong Kong Traditional, and Taiwan Traditional
• Tencent Translation API support
• Auto scroll/auto page turn with adjustable speed
• Auto reading modes: pixel scroll, line-by-line display, sentence underline
• TOC parsing for TXT, EPUB, MOBI, and AZW3
• Original annotation display for EPUB/MOBI/AZW3
4. Bookmarks and Notes
• Categorized bookmarks
• Notes with underline, wavy line, dashed line, double strikethrough, redaction line, border, and background color
• Custom color for each note
• Tap bookmarks or notes to jump
• Export notes as Markdown or TXT
5. File Management
• Real folder-based book management
• Sort by name, size, date, type, or reading duration
• Pin files and set folders to top, bottom, or hidden
• Read covers from EPUB/MOBI/AZW3, or update via web search/photos
• Rename files using built-in book titles
• Search files, folders, and full text while reading
• Recent imports for quick access
6. Format Conversion
• Convert EPUB/MOBI/AZW3/PDF to TXT
• Convert TXT to EPUB
• Supports Chinese conversion and encoding selection
• Preserves original TOC structure
7. Statistics
• Daily reading/listening duration
• Reading heatmap
• Book progress
• Offline TTS audio duration
8. Security
• Password and Touch ID/Face ID protection
9. Migration and Sync
• Export/import reading history and personal settings
• Export single or multiple themes
