# Stack Trainer

> Mnemonic card stack training tool for close-up magicians. (iPhone/iPad app by Ralph Cos.)

- Source: https://appshunter.io/ios/app/stack-trainer/id646458442 (this page in markdown: same URL + `.md`)
- Developer: [Ralph Cos](https://appshunter.io/developer/573505028)
- Category: Utilities, Entertainment
- Price: $3.99 with in-app purchases
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 6 MB
- Languages: American English
- Released: 2013-05-15
- Data updated: 2026-08-28
- Monetization: subscription
- User reviews in markdown: https://appshunter.io/ios/app/stack-trainer/id646458442/reviews.md

## What is Stack Trainer?

Stack Trainer forms part of a comprehensive suite of apps that dedicate to technical learning tools for Close-up magicians. Stack Trainer addresses those who are familiar with the concepts related to Aronson, Tamariz, Nikolas. If you know what these names relate to, and you apply the according techniques, then this app will help you stay tuned and inspired. 

Stack Trainer provides a most realistic card deck experience.

It sets the golden standard for mnemonic deck training. 

A radical slim design. 

Cycle through the logical phases of the challenges at hand. Name it the "virtual spectator" concept.

Approaches:
- Next Card: Sequentially displayed, name the next card
- Each Card: Name each card's position in a shuffled stack
- Each Position: Name each position's card in a shuffled stack
- Get Position: Name the position of a given card
- Get Card: Name the card at a given position
- Next Suit: Name the distance to the next of the same suit
- Wrong Card: Identify the one card that is displaced in the face-up spread stack
- Missing Card: Find the missing card in the face-up spread stack
- Spot: Spot a specific card in the face-up spread stack
- Highest Card: Identify the high and low cards of a random sub-stack
- Four of a Kind: Name the distance to the next of the same kind

Filters:
Filters can be set to reduce the actual stack to a substack of lower size addressing and supporting the gradual progress during the early learning phase of a stack. Filters also provide different perspectives onto a stack to inspire and engage expert users. These filters, applied to the chosen approach, can be set:
- ranges 1-13, 14-26, 27-39, 40-52, and a custom range
- pair and impair positions
- red and black cards
- any of the four suits
- court and number cards

Some Features:
- Aronson, Tamariz and user defined stacks
- Lorrayne's peg words for the 52 cards and 52 positions, plus 3 user defined sets
- display and whisper modes
- includes the quick-touch interactive analyser visualising the solution path and allowing for self imposed problem statements with decadic and tridecadic layouts
- feedback driven development
- feels almost like a true deck of cards. Practicing card magic you don't want no complicated, overloaded and distracting user interface. Less is more. 
- probably the most complete, and straightforward solution available. 

A card, the one downwards (or upwards), maybe its mates, maybe the next one of the same suit. Either on random walk, or deliberate choices on the complete map. Touch swipe, swipe. Swipe and again.

To experience the look and feel of 'Stack Trainer' load the free 'Random Input' app available by this developer.

Additional information:
- License agreement - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
- Privacy policy - https://yeahgic.com/pge_PrivacyStack.htm

## Key features

- Realistic card deck simulation
- Multiple mnemonic training approaches
- Customizable stack filters
- Lorrayne's peg words integration
- Interactive quick-touch analyzer
- Display and whisper modes

## Pricing and in-app purchases

Base price: $3.99.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Annual Subscription | $2.99 | per year |
| 3 Months Subscription | $1.99 | per 3 months |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/stack-trainer/id646458442/reviews.md

### 1/5 — Scam. Doesn’t Work.

*2026-04-13*

Stay away from this app. It is a scam.

First of all, it is hands-down the worst designed app I have ever used, even including free ones. This app not only looks ugly, but its functionality is hilariously difficult. It's as if the developed intentionally tried to make the user experience as frustrating as possible. Do you want to memorize a stack? Okay, first open up a text file and manually type in all the cards, then upload the text file to the app. That is not a joke. There is a menu bar at the bottom of the screen. Do you want to hit any of those menu bar buttons? Good luck. They're incredibly tiny and you'll be trying to hit them over and over and over, hitting the wrong buttons many times in the process.

Oh, and did I mention that the app is buggy as hell and glitches out all the time?

And now for the best part. The developer, Ralph Cos is a thief. I paid for this app. It was a one-time purchase price. Yet now I go open the app to find that it no longer works. Ralph changed it to a subscription. Not for additional, new features. No, he locked it down for even the basic functions I already paid for.

It was already a garbage app to begin with, so I'm not even upset that he stole my money. But stay away from this terrible app and its scam artist developer.

## Frequently asked questions about Stack Trainer

### What is Stack Trainer?

Stack Trainer is a mobile application designed to help close-up magicians practice and memorize card stacks. It offers a realistic card deck experience with various training modes and filters to enhance learning.

### What are the subscription plans for Stack Trainer?

Stack Trainer offers a 3-month subscription for $1.99 per 3 months with a 7-day free trial, and an annual subscription for $2.99 per year.

### What devices does Stack Trainer support?

Stack Trainer is available for iPhone, iPad, and iPod devices.

### How often is Stack Trainer updated?

The latest version of Stack Trainer is 2026.5, and it was last updated on August 24, 2026. This indicates frequent updates to improve the application.

### What is the age rating for Stack Trainer?

Stack Trainer has an age rating of 4+, making it suitable for a wide range of users.

### Does Stack Trainer have ads?

No, Stack Trainer does not contain advertisements, providing an uninterrupted user experience.

### What are the different training approaches in Stack Trainer?

Stack Trainer offers approaches like naming the next card, naming each card's position, naming each position's card, getting a card's position, getting a card at a position, identifying the next card of the same suit, identifying displaced or missing cards, spotting specific cards, and identifying high/low cards in sub-stacks.

### Can I customize the stacks in Stack Trainer?

Yes, Stack Trainer supports Aronson, Tamariz, and user-defined stacks. It also includes Lorrayne's peg words for cards and positions, with options for user-defined sets.

## Version history (last 5 releases)

### 2026.5 — 2026-08-24

1. The app is now offered for purchase
2. Subscribers automatically own the app and will no longer need to renew subscriptions

### 2026.4 — 2026-02-25

1. Code maintenance

### 2026.3 — 2026-02-25

1. Code maintenance

### 2026.2 — 2026-02-14

1. Refinements to the subscription logic. In case you run into any issues please do not hesitate to contact me

### 2026.1 — 2026-01-20

1. 'Stack Trainer' is moved to a subscription model supporting a 3 months subscription and an annual subscription. Existing users will continue as purchased users and will not notice the change. A big thank you to all early adopters who enabled this important milestone towards a sustainable future for 'Stack Trainer'!
2. Code maintenance

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## More apps by Ralph Cos

- [ACAAN Trainer](https://appshunter.io/ios/app/acaan-trainer/id573505025)
- [Twice As Hard Trainer](https://appshunter.io/ios/app/twice-as-hard-trainer/id577559904)
- [Serial-Sum Trainer](https://appshunter.io/ios/app/serial-sum-trainer/id577884595)
- [Random Input](https://appshunter.io/ios/app/random-input/id578071417)
- [Random Sound Recorder](https://appshunter.io/ios/app/random-sound-recorder/id608045136)

All apps by Ralph Cos: https://appshunter.io/developer/573505028

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*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 2026-08-28.*