LingRoll - TTS Audio Reader

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