Active Learning in Every Page, Smart Document Workspace
LearnFlow transforms passive PDF reading into an interactive learning environment. Engineered with text-to-speech voice playback, voice notes, freehand canvas drawing, password-protected private documents, and real-time study analytics.
Beyond a Viewer: A Complete Learning Engine
Engineered in React as a production-grade, modular web application. LearnFlow combines client-side document processing, local persistence, real-time audio orchestration, and hardware-accelerated drawing canvas without server bottlenecks.
Engineered for Deep Focus, Retention & Privacy
Intelligent Document Library
Drag-and-drop ingestion with title, author, category, tag taxonomies, document search, and reading-progress persistence.
Private Document Security
Password protection for sensitive files, locked viewing mode, secure deletion guardrails, and last-page session memory.
Direct Canvas & Handwriting
Freehand sketching, multi-color ink palettes, margin annotations, and precision bookmarking directly over PDF pages.
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TTS Reading & Audio Notes
Synthetic voice reader with pitch/speed modulation alongside embedded microphone recording for contextual voice memos.
Study Telemetry & Quick Search
Session-duration tracking, highlight analytics, contextual note history, and one-click external knowledge lookup.
Built for Focused Learning
LearnFlow brings PDF study tools, OCR, annotations, voice features, canvas workspaces, and learning analytics into one privacy-focused ecosystem.
A Zentrovik Product Built by Madhavan Siva
LearnFlow is designed and authored by Madhavan Siva under Zentrovik. It is built to make digital learning more active, organized, accessible, and useful across everyday study workflows.