DoCube - Your Knowledge base

DoCube – Smart Document Browser & Personal Knowledge Management Tool

Explore, Annotate, Connect – Redefine your reading and knowledge management with DoCube. In an era of information overload, efficient reading, deep annotation, and lasting retention are essential. DoCube helps you build a personal knowledge base, ensuring every piece of reading leaves a trace, every annotation transforms into lasting memory, and every text can be quickly retrieved.

Browser-like Reading Experience

Instant search across your entire document library, with results ranked by relevance.
Unique deep links for every document location—navigate seamlessly between documents.
Tab-based browsing with full history support (back/forward navigation).

Multi-Format Document Support

Import PDFs & EPUBs from local storage.
Save web pages from Safari for offline reading.
Create and edit Markdown documents.
Tagging system — organize documents with unlimited custom tags for smart filtering.

Unified Annotation System

Six annotation types: highlight, underline, strikethrough, link, Markdown notes, and quote.
Text-bound annotations — search results prioritize annotated content.
Works across PDFs, EPUBs, and web pages — consistent experience.
Six customizable colors for visual categorization.
Auto-convert annotations into flashcards based on color&type.
Deep linking — connect annotations across documents.

Built-in Flashcard Templates

Flip cards (Q&A format) & Mask cards (hide/reveal key content).
Full Markdown support — formulas, images, videos, and more.
Context-aware — cards remain tied to their source text.

Reading & Review Planner

Weekly planning—set daily goals (weekends optional).
Progress tracking — documents split into sections for granular insights.
Daily completion stats — stay motivated.

AI-Powered Enhancements

Smarter search — AI summarizes results and pinpoints key excerpts.
AI-generated flashcards — custom prompts refine card creation.
Semantic Search — you can easily find the content you need, Even if you can't remember the exact original text

Cross-Device Sync

One purchase, three platforms — iPhone, iPad, and Mac
iCloud sync — have full control over your document data
Conflict-free merging — offline edits sync seamlessly.

Home Screen Widgets

Quote widget — random flashcards for serendipitous review.
Daily planner widget — track progress at a glance.

The free version supports all functions, with a limit only on the number of documents that can be imported or created. The free version allows a maximum of 10 documents. You can unlock the limit on the number of documents by purchasing the professional version within the app.