# Memorize Fast vs Stack Trainer

The clearest difference is rating: Memorize Fast at 5.0 against Stack Trainer's 4.6. Memorize Fast also leads on iOS requirement (15.0 vs 17.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Memorize Fast sells 1 one-off in-app purchase and Stack Trainer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Memorize Fast holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 2 and 5 respectively.

Memorize Fast ships an update every 9 days, Stack Trainer every 5 days. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Memorize Fast | Stack Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/memorize-fast-nummnemonic/id6757535911/reviews)** | [4.6 (5 ratings)](https://appshunter.io/ios/app/stack-trainer/id6760936559/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 45 MB | 115 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Yevhen Murzik](https://appshunter.io/developer/1533055951) | [Wayne Borcher](https://appshunter.io/developer/1886925894) |

## What reviewers say

### Memorize Fast

[App page](https://appshunter.io/ios/app/memorize-fast-nummnemonic/id6757535911)

This app uses mnemonic techniques to help you memorize numbers like phone numbers, PINs, and passcodes. It transforms digits into vivid images for natural recall, requiring minimal daily practice. Unlock advanced features with custom mappings.

**Highlights:** Memorize phone numbers and passcodes, Remember long number sequences, Learn Major and PAO systems, Improve recall accuracy, Daily practice under a minute, Create custom number mappings (Pro)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro Access | $4.99 | one-time |


### 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 Memorize Fast free?

Memorize Fast is free to download, with in-app purchases available.

### Is Stack Trainer free?

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

### Which has better reviews, Memorize Fast or Stack Trainer?

Memorize Fast is rated higher. Memorize Fast averages 5.0 out of 5 from 2 ratings, while Stack Trainer averages 4.6 from 5 ratings.

### Do Memorize Fast or Stack Trainer have ads?

Neither Memorize Fast nor Stack Trainer shows ads.

### Which is updated more often, Memorize Fast or Stack Trainer?

Memorize Fast ships an update every 9 days, and Stack Trainer every 5 days. Most recently, Memorize Fast was updated on September 29, 2026 and Stack Trainer on October 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.*