# MemDeck

> MemDeck is a free, open-source memorized deck trainer for magicians and memory enthusiasts. It helps users master famous memorized deck systems through flashcard exercises, spot checks, ACAAN practice, and deck utilities. Available as a PWA that works offline, in 7 languages, with no account required.

Last updated: 2026-04-05

MemDeck is designed for card magicians who use memorized stacks (also known as memorized decks or mem-decks). A memorized stack is a specific, pre-arranged order of all 52 cards that a magician commits to memory, enabling powerful card effects. MemDeck provides interactive training tools to help memorize and maintain recall of these systems.

All training data stays on the user's device via localStorage. No server, no sign-up. Uses Google Analytics for anonymous usage metrics.

## Stack Range

A global per-stack setting lets users focus training on a specific range of positions (e.g., 1–20) instead of the full 52-card deck. Accessible via the navigation bar next to the stack picker. This supports progressive learning — start with a small range and expand as you memorize more cards. Applies to Flashcard Training, Spot Check, Stack Lookup, and Card Spelling. ACAAN, Faro Shuffle, and Stay Stack always use the full deck.

## Features

- [Flashcard Training](https://memdeck.org/flashcard/): Practice recalling cards by position, position by card, or both. Includes neighbor mode for learning adjacent cards in the stack. Respects the stack range setting.
- [Spot Check](https://memdeck.org/spot-check/): Test your knowledge by identifying missing, swapped, or moved cards in the deck. Respects the stack range setting.
- [ACAAN Calculator](https://memdeck.org/acaan/): Practice Any Card At Any Number calculations with your memorized stack. Always uses the full deck.
- [Toolbox](https://memdeck.org/toolbox/): Stack lookup, faro shuffle simulator, card spelling tool, and stay stack sequence finder. Stack lookup and card spelling respect the stack range; faro shuffle and stay stack use the full deck.
- [Stats](https://memdeck.org/stats/): Track session history, accuracy, and progress over time.
- [Guide](https://memdeck.org/guide/): Getting started instructions and training tips.
- [FAQ](https://memdeck.org/faq/): Frequently asked questions about memorized decks and MemDeck.
- [Resources](https://memdeck.org/resources/): Curated books, PDFs, and links for memorized deck study.

## Supported Stacks

- Tamariz (Mnemonica) by Juan Tamariz
- Aronson by Simon Aronson
- Memorandum by Woody Aragon
- Redford Stack by Patrick Redford
- Particle System by Joshua Jay
- Elephant by Pierre Boc & Yves Meret
- Infinity by Tim Conover

## Technical Details

- Progressive Web App (PWA) with full offline support
- No backend or account required - runs entirely in the browser
- Data persisted in localStorage on the user's device
- Built with React, TypeScript, Mantine UI, and Vite
- Open source: https://github.com/julienroussel/memdeck.org

## Languages

English, French (Francais), Spanish (Espanol), German (Deutsch), Italian (Italiano), Dutch (Nederlands), Portuguese (Portugues)

## Optional

- [GitHub Repository](https://github.com/julienroussel/memdeck.org)
- [Resources & Recommended Reading](https://memdeck.org/resources/)
- [llms-full.txt](https://memdeck.org/llms-full.txt): Expanded version of this file with full details