Synapse PDF
Power your documents with neural connections.
Synapse PDF launched on June 13, 2026.
What it does
Synapse PDF is a complete study and knowledge workspace for macOS. Instead of paying for multiple apps, it combines advanced PDF annotation, study session tracking, and 19+ built-in utilities (merge, split, OCR) into one native app. Standout features include "Link It" to build knowledge maps across documents, and "Sum It" to export all highlights instantly. Say goodbye to expensive subscriptions—available with a 7-day free trial and a Lifetime license!
The most powerful, AI-integrated PDF assistant designed exclusively for macOS. Professional tools meet intelligent study analytics. Every tool you need to study smarter, not harder — in one beautifully crafted macOS app. High-speed PDF and PowerPoint engine with advanced annotation tools — pen, highlight, textbox, shapes, laser pointer, and image insertion. Tracks study time per page, generates a heatmap of your focus, and provides detailed analytics on your learning progress across all documents. Embedded NotebookLM-style AI assistant in the left sidebar for deep document understanding. Generate audio overviews, mind maps, quizzes, and flashcards instantly. All your highlights collected in…from synapsepdf.com
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