# Stack Trainer vs Chartlotse

The clearest difference is in-app purchases: Chartlotse at none against Stack Trainer's 1. Chartlotse also leads on iOS requirement (15.1 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Stack Trainer sells 1 one-off in-app purchase. Chartlotse asks for nothing beyond the download.

Stack Trainer ships an update every 5 days, Chartlotse weekly. The most recent releases landed on October 2, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Stack Trainer | Chartlotse |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/stack-trainer/id6760936559/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 115 MB | 30 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wayne Borcher](https://appshunter.io/developer/1886925894) | [Benjamin Adami](https://appshunter.io/developer/6800387525) |

## What reviewers say

### Stack Trainer

[App page](https://appshunter.io/ios/app/stack-trainer/id6760936559)

This app helps magicians memorize and recall card stacks with gamified drills and performance scenarios. It offers various practice modes to build speed, accuracy, and long-term retention of memorized decks.

**Highlights:** Gamified daily drills, Memorized deck recall training, Multiple practice modes, Performance tracking, Awards and personal bests, Apple Watch practice

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack Trainer Pro | $9.99 | one-time |


### Chartlotse

[App page](https://appshunter.io/ios/app/chartlotse-learn-trading/id6800387373)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Stack Trainer free?

Stack Trainer is free to download, with in-app purchases available.

### Is Chartlotse free?

Chartlotse is free to download, with no in-app purchases.

### Do Stack Trainer or Chartlotse have ads?

Neither Stack Trainer nor Chartlotse shows ads.

### Which is updated more often, Stack Trainer or Chartlotse?

Stack Trainer ships an update every 5 days, and Chartlotse weekly. Most recently, Stack Trainer was updated on October 2, 2026 and Chartlotse on October 11, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*