Stack Trainer

Train Mnemonica and other memorized deck recalls with fast daily drills, Awards, Personal Bests, Apple Watch practice, and a one-time Pro unlock.

Stack Trainer helps magicians learn, practice, and retain memorized deck stacks — also known as memdecks — including Mnemonica, Aronson, Redford, Particle System, Memorandum by Woody Aragón, Nikola Card System, and custom-built stacks.

Learning a stack is hard. Keeping it sharp is harder. Stack Trainer uses retrieval practice, spaced repetition, adaptive card prioritization, visual reinforcement, Awards, streaks, Personal Bests, and performance tracking to turn fragile recall into practical fluency.

Train daily with focused practice sections designed around how magicians actually build stack skill:

Practice Modes

Core Recall Build instant card and position recall.

• Recall: Position — train card-to-position and position-to-card recall
• Recall: Sequence — train next and previous card recall

Stack Fluency Strengthen speed, accuracy, and whole-stack confidence.

• Matchup — timed card-to-position memory game
• 4 of a Kind — match ranks to their stack positions
• Stack Segments — learn where cards generally live in the stack
• Rebuild Stack — move cards back into correct stack order

Practical Stack Work Apply your stack knowledge in performance-style scenarios.

• ACAAN — practise Any Card at Any Number thinking
• Improv — train flexible cut, count, and reveal thinking for memorized-deck performance (pro mode only)

Free Features

• Practice the Mnemonica stack at no cost
• Daily reminders, streaks, and habit tracking
• Earn Awards as you build consistency
• Track Personal Bests and recent sessions
• Train Core Recall and selected stack practice modes

Memory Support

• PAO: Person / Action / Object memory links
• Custom PAO entries
• In-game hints
• Notes and photos in Learn Stack mode with Pro
• Spaced-repetition-based training using Adaptive Card Prioritization with Pro

Performance Tracking

• Score, accuracy, recall time, and session stats
• Weak and strong cards
• Personal Best tracking with timestamps
• Awards across consistency and mastery
• Card Mastery Heat Map and performance trends
• Focus Cards showing recently missed and weak cards that need attention
• Adaptive practice insights with Pro to help identify cards needing more review

Apple Watch

• Practise quick recall on your wrist
• Use Recall Quiz and Learn the Stack
• Sync stats with iPhone

Pro Features — One-Time Unlock

• iCloud sync
• Additional stacks: Redford, Aronson, Particle System, Memorandum by Woody Aragón, Nikola Card System
• Custom stacks — build your own
• Matchup reshuffle mode for stronger speed and card placement training
• Full Stack Fluency practice modes
• Practical Stack Work modes including ACAAN and Improv
• Improv Random Starting Cut option for practising from different bottom-card positions
• Adaptive card prioritization and spaced-repetition-based training
• Notes and photos in Learn Stack mode
• Future Pro features

No ads in the free version.

Train daily. Beat your Personal Bests. Unlock Awards. Know your stack.