One Workspace Per Project. Everything You Need Inside.

Create a deck for each subject, project, or goal. Inside: AI chat, notes, tasks, flashcards, journals, and more—all without app-switching.

AI Study Assistant

Full ChatGPT built into your decks with three specialized AI modes

* AI features require your own OpenAI API key. Built-in AI subscriptions coming soon.

AI Study Mode with tool calling
AI generated study materials
Generate flashcards with AI

Full ChatGPT Built In

Complete ChatGPT interface with GPT-5 and GPT-4o support. Chat, ask questions, and get instant explanations while you study.

Three AI Modes

Study Mode generates flashcards and notes. Feynman Mode identifies knowledge gaps. Conversational for Q&A.

Review Before Importing

AI creates study materials automatically, but you have full control. Accept, inspect, edit, or decline suggestions.

Smart Flashcards

Science-backed spaced repetition with rich media support

Flashcard editor
Generate flashcards with AI

Spaced Repetition Algorithm

Science-backed spaced repetition maximizes long-term retention by reviewing cards at the perfect moment before you forget them.

Rich Content & Media

Embed YouTube videos, images, and rich text formatting directly in your flashcards. Perfect for visual learners.

AI-Powered Generation

Generate 1-30 flashcards instantly on any topic using GPT-4o. Review, customize, and import only the cards you want.

Professional Notes

Full-featured rich text editor with multimedia support

Rich note editor

Rich Text Editor

Full-featured editor with headers, lists, bold, italic, links, code blocks, and more. Powered by Slate.js for a professional writing experience.

Embed Videos & Images

Add multimedia content directly into your notes. Perfect for creating comprehensive study guides with visual aids.

AI Can Generate Notes

In Study Mode, AI automatically creates detailed notecards for concepts that need explanation alongside flashcards.

Video Library

Curate educational videos with YouTube integration

Video viewer

Curate Educational Videos

Build your own video library with YouTube integration. Search and add videos without leaving the app.

Attach Notes & Flashcards

Add notes directly to videos with timestamps. Create flashcards for important points you don't want to forget.

Smart Metadata

Titles and descriptions auto-populate from YouTube. Organize with tags and categorize your video library.

Kanban Task Board

Visual drag-and-drop task management per deck

Kanban board

Visual Task Management

Track study goals, content creation, and project tasks with a drag-and-drop Kanban board. Organize by subject/course.

To Do → In Progress → Done

Three-column workflow with instant drag-and-drop. Move tasks between columns and reorder with smooth animations.

Rich Task Details

Add detailed notes to any task. Track creation and update dates. Bulk delete completed tasks with one click.

Quick-Capture Sticky Notes

Fastest way to capture ideas with color-coded organization

Sticky notes grid

Press Enter to Create

Fastest way to capture ideas. Type a note and press Enter— done. Perfect for brainstorming and quick reminders.

Color-Coded Organization

Four colors (yellow, pink, blue, green) for visual organization. Change colors to categorize by priority.

Drag & Drop + Inline Editing

Arrange notes exactly how you want. Click to edit inline with auto-save. Copy to clipboard with one click.

Timeline Journal

Social-media-style journaling with image support

Journal timeline feed

Social-Media-Style

Timeline-based feed with markdown support. Document your learning journey, project progress, or daily reflections.

Add Up to 4 Images

Drag, drop, or paste images directly. Smart layouts automatically adapt to 1-4+ images with lightbox viewing.

Multiple Journal Books

Create separate journals for different topics, projects, or time periods. Each deck can have multiple journal books.

Tables & Databases

Structured data tables with 13 column types and smart aggregations

Table creation
Table view with data

13 Column Types

Text, number, date, select, multi-select, currency, percentage, rating, URL, email, phone, boolean, and datetime.

Inline Editing & Aggregations

Click any cell to edit with type-specific inputs. Auto-calculate sums, averages, min/max in column headers.

Templates & Search/Sort

Save table structures as templates. Search across columns and sort by any field with type-aware comparison.

Powerful Organization

Decks, collections, tags, search, and filters

Library and collections
Deck organization

Decks & Collections

Group related content into decks (one per subject/project). Organize decks into collections by topic or category.

All 8 Tools in Every Deck

Each deck contains AI Chat, Flashcards, Videos, Rich Notes, Kanban Board, Sticky Notes, Journal, and Tables.

Tags, Search, & Filters

Tag content across all types. Powerful search finds anything instantly. Filter by content type or view everything together.

Stop Juggling Apps. Start Making Progress.

Most productivity tools force you to choose: simple but limited, or powerful but overwhelming. Decks gives you both—eight tools that work together without the complexity.

Why Decks?

  • One workspace per project—everything in one place
  • Simple, clean UI—no complexity overload
  • Eight powerful tools that actually work together
  • AI chat, notes, tasks, flashcards, journal, videos, tables
  • Lifetime access after one purchase
  • $20/year for updates—optional renewal
  • All data stored locally on your device

Common Alternatives

  • Complex UI requires hours to learn
  • Tools scattered across multiple apps
  • Generic productivity tools, not purpose-built
  • Endless configuration and setup time
  • Monthly fees that add up fast ($10-20/mo)
  • Locked into subscriptions forever
  • Data stored on remote servers

Own Your Second Brain Forever

One purchase. Lifetime access. No subscription trap.

  • All features included from day one
  • All updates free for the first year
  • Optional $20/year renewal for continued updates
  • Keep your current version forever if you don't renew