LingRoll lite

LingRoll brings reading and listening together with flexible ebook layouts, rich TTS tools, and practical file management.

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
• 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

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
• Portrait and landscape layouts, rotation controls, and a page-curl option

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
• Browse WebDAV folders; upload from your library or iCloud; download to a chosen folder
• Batch download/delete, rename, and move remote items

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

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
• Add multiple WebDAV accounts and choose the active account
• Sync the latest 100 reading records; choose a sync frequency or manual sync
• Prompt to jump to a newer reading position from another device
• Reading sync excludes books; transfer them with WebDAV file management

Lite vs. Pro: The following features require Pro:
• Microsoft Azure/Edge and MiMo TTS
• Narration/dialogue detection and separate voices
• Language-aware voice selection
• TTS audio export
• Offline TTS duration stats
• Optimized long-paragraph playback
• Automatic trailing-silence skip
• Custom listening background music
• Line-by-line highlights and sentence underlines
• Font import and installation
• TXT-to-EPUB conversion
• Chinese conversion (Simplified, Traditional, Hong Kong, Taiwan)
• Text translation and Tencent Translation
• Reading statistics
• Password and Touch ID/Face ID protection
• WebDAV sync and file management
• Backup/import of reading history, personal settings, theme colors