# Stack Trainer — Mnemonica Stack Practice > Gamified app for memorized deck recall training for magicians. (iPhone/iPad app by Wayne Borcher.) - Source: https://appshunter.io/ios/app/stack-trainer/id6760936559 (this page in markdown: same URL + `.md`) - Developer: [Wayne Borcher](https://appshunter.io/developer/1886925894) - Category: Education, Utilities - Price: Free with in-app purchases - Rating: 4.50/5 from 4 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 109 MB - Languages: American English, European Spanish - Released: 2026-03-27 - Data updated: 2026-09-02 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/stack-trainer/id6760936559/reviews.md ## What is Stack Trainer? Train your recall of Mnemonica and other memorized decks with Focused Daily Drills, Awards, Personal Bests, Apple Watch practice, and a one-time Pro unlock. Now you can also learn the Mnemonica Stack with the same one-time Pro unlock. Stack Trainer is the memorized-deck training app for magicians who want to build genuine, performance-ready stack fluency. Start by learning Mnemonica through an interactive PAO Peg course, then sharpen recall, speed and confidence with focused daily practice. The new PAO Peg Training teaches the stack card by card using vivid Person, Action and Object memory links, visual reinforcement, guided questions and active recall. Free users can experience the first five Mnemonica cards; unlock Pro to continue the complete course and turn your training into a full-stack skill. Whether you are learning your first memdeck or keeping an established stack sharp, Stack Trainer gives you a structured path from knowing a card to using it under pressure. Train the Skills That Matter Learn Mnemonica - Guided PAO Peg lessons that build card-to-position and position-to-card recall - Visual memory links, hints and progressive practice - First five cards free; complete training course with Pro Core Recall - Instantly recall a card from its position — and its position from the card - Train next-card and previous-card recall - Focus on small card groups, then expand toward the full stack Stack Fluency - Matchup, 4 of a Kind, Stack Segments and Rebuild Stack - Build speed, accuracy and whole-stack confidence Practical Stack Work - ACAAN practice for Any Card at Any Number thinking - Improv scenarios for flexible cut, count and reveal work Train Smarter Build the habit with daily reminders, streaks, Awards, Personal Bests and session statistics. Track your accuracy, recall time, weak cards and progress, then return to the cards that need more work. PAO memory links, notes, photos and focused repetition help turn fragile recall into practical fluency. Apple Watch - Keep your recall sharp anywhere with quick wrist-based practice. Your stats sync with iPhone. Pro — One-Time Unlock Unlock the complete Mnemonica PAO Peg training course, adaptive practice tools and the full Stack Trainer experience: - Full Mnemonica PAO Peg Training beyond the first five free cards - Adaptive card prioritization and spaced-repetition-based training - Additional stacks: Aronson, Redford, Particle System, Memorandum, Nikola Card System and Joyal - Create and train your own custom stacks - Full practical modes, including Improv with random starting-cut practice - Notes and photos in Learn Stack - Cloud sync for backup and restore - Future Pro features No ads. One purchase. A stack you can actually use. Train daily. Build fluency. Know your stack. ## Key features - Gamified daily drills - Memorized deck recall training - Multiple practice modes - Performance tracking - Awards and personal bests - Apple Watch practice ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Stack Trainer Pro | $9.99 | one-time | ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/stack-trainer/id6760936559/reviews.md ### 5/5 — Perfectly simple app *2026-08-15* Perfect for training mnemonic stacks ### 3/5 — Not for memorizing!! *2026-06-06* This is a great trainer for practicing; however, as a complete beginner, you can't learn the stack through comprehensive studying. The practice is meant for people who have already memorized the stack. **Developer response:** Thanks for the thoughtful feedback. We have been working on and have now released Stack Trainer Version 2, which now has a Mnemonica training course built in, available to Pro users. Thanks again for the feedback. ### 5/5 — Absolutely love it!!! *2026-05-18* Absolutely love this app, it is just what I needed to learn Mnemonica and then practice it daily!!! Such a wonderfully made app. Strengthen your recall with fun gamification. ## Frequently asked questions about Stack Trainer ### What is Stack Trainer? Stack Trainer is a memorized deck practice and recall trainer for magicians. It helps users build, practice, and retain memorized deck stacks like Mnemonica, Aronson, and others through focused daily drills. ### What memorized deck stacks can I practice with Stack Trainer? Stack Trainer supports Mnemonica, Aronson, Redford, Particle System, Memorandum by Woody Aragón, Nikola Card System, Joyal, and custom-built stacks. The Mnemonica stack can be practiced for free. ### What are the different practice modes in Stack Trainer? Stack Trainer offers Core Recall for instant card and position recall, Stack Fluency for speed and accuracy, and Practical Stack Work for performance-style scenarios like ACAAN. Some modes require a Pro unlock. ### Does Stack Trainer have ads? No, Stack Trainer does not contain advertisements. It is a free app with an optional one-time Pro unlock for additional features. ### What features are available in the free version of Stack Trainer? The free version allows practice of the Mnemonica stack, daily reminders, habit tracking, awards, personal bests, trends, recent sessions, Core Recall, and selected stack practice modes. Filters are available to practice small groups of cards. ### What is the Pro unlock in Stack Trainer? The Pro unlock provides access to advanced memory support features such as custom PAO entries, in-game hints linked to PAO entries, notes and photos in Learn Stack mode, and spaced-repetition-based training with Adaptive Card Prioritization. ### How does Stack Trainer help with long-term retention? 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 for long-term retention. ### What devices is Stack Trainer available on? Stack Trainer is currently supported on iPhone devices. It also offers Apple Watch practice for on-the-go training. ## Version history (last 5 releases) ### 2.0.6 — 2026-08-26 General UI refinements and usability improvements ### 2.0.5 — 2026-08-20 General UI refinements and usability improvements ### 2.0.4 — 2026-08-18 - General UI refinements and usability improvements - Core Recall & ACAAN now lets you choose between multiple-choice answers and manual entry for more focused stack practice - change this in the options section of the practice mode - Version 2 now introduces PAO Peg Training for Pro users. Master Mnemonica using the Person-Action-Object method, the technique memory athletes use to lock in long sequences ### 2.0.3 — 2026-08-14 - General UI refinements and usability improvements - PAO Peg training video playback issue fixed ### 2.0.2 — 2026-08-10 Welcome to Stack Trainer 2.0! Discover a new guided course for learning the Mnemonica Stack, available with Pro Unlock. We’ve also refreshed Home, enhanced Focus Cards, and added clear summaries of your Course and Practice progress. Plus, enjoy further refinements and improvements throughout the app. Happy learning! ## More apps by Wayne Borcher - [PepTalk: Peptide Calculator](https://appshunter.io/ios/app/peptalk-peptide-calculator/id6762527721) All apps by Wayne Borcher: https://appshunter.io/developer/1886925894 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-02.*