# Mnemonica vs Stack Trainer

The clearest difference is price: Stack Trainer at Free against Mnemonica's $6.99. Stack Trainer also leads on update cadence (every 4 days vs every 9 days). Mnemonica's advantage is in-app purchases (none vs 1) and chart position (#185 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Stack Trainer is free to download; Mnemonica costs $6.99 up front. Stack Trainer sells 1 one-off in-app purchase. Mnemonica asks for nothing beyond the download.

Mnemonica ships an update every 9 days, Stack Trainer every 4 days. The most recent releases landed on September 18, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Mnemonica | Stack Trainer |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | — | **[4.5 (4 ratings)](https://appshunter.io/ios/app/stack-trainer/id6760936559/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Best chart rank | **#185** | — |
| Size | 8 MB | 109 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Javier Orbe](https://appshunter.io/developer/1816805650) | [Wayne Borcher](https://appshunter.io/developer/1886925894) |

## What reviewers say

### Mnemonica

[App page](https://appshunter.io/ios/app/mnemonica-stack-trainer/id6746422559)

**Currently charting:** #185 Top Paid · Education (US App Store)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Mnemonica free?

Mnemonica costs $6.99, with no in-app purchases.

### Is Stack Trainer free?

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

### Do Mnemonica or Stack Trainer have ads?

Neither Mnemonica nor Stack Trainer shows ads.

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

Mnemonica ships an update every 9 days, and Stack Trainer every 4 days. Most recently, Mnemonica was updated on September 18, 2026 and Stack Trainer on September 2, 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.*