# Mnemo Major System Trainer vs Master Any Stack

The clearest difference is rating: Mnemo Major System Trainer at 4.4 against Master Any Stack's 3.0. Mnemo Major System Trainer also leads on review sentiment (88% vs 67%) and price ($12.99 vs $14.99). Master Any Stack's advantage is chart position (#185 vs unranked) and update cadence (every 3 weeks vs every 2 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Mnemo Major System Trainer costs $12.99 and Master Any Stack $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mnemo Major System Trainer holds the better App Store score, 4.4 against 3.0. Both are backed by a comparable volume of ratings — 18 and 4 respectively. Written reviews point the same way: 88% of Mnemo Major System Trainer's written reviews are positive against 67% of Master Any Stack's.

Mnemo Major System Trainer ships an update every 2 months, Master Any Stack every 3 weeks. The most recent releases landed on September 19, 2026 and August 23, 2026 respectively.

## The numbers

| Metric | Mnemo Major System Trainer | Master Any Stack |
| --- | --- | --- |
| Price | **$12.99** | $14.99 |
| Rating | **[4.4 (18 ratings)](https://appshunter.io/ios/app/mnemo-major-system-trainer/id649905769/reviews)** | [3.0 (4 ratings)](https://appshunter.io/ios/app/master-any-stack/id1639475883/reviews) |
| Number of ratings | **18** | 4 |
| Positive reviews | **88.1% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#185** |
| Size | 54 MB | 22 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [Gerald Reindl](https://appshunter.io/developer/649905772) | [The Daily Magician Ltd.](https://appshunter.io/developer/1650401526) |

## What reviewers say

### Mnemo Major System Trainer

[App page](https://appshunter.io/ios/app/mnemo-major-system-trainer/id649905769)

Learn and master the Major System, a powerful mnemonic technique for remembering numbers. This app offers an integrated training program with visual aids and statistics to help you create and optimize your personalized number-to-image encoding system.

**Highlights:** Personalized Major System creation, Integrated training program, Reaction time analysis, Number sequence to image generator, Pre-installed Major System (0-99), Customizable terms and images, CSV Import/Export

**Features:** Vision Pro support

**In-app purchases:** none


### Master Any Stack

[App page](https://appshunter.io/ios/app/master-any-stack/id1639475883)

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

Learn to memorize the order of a deck of cards with this user-friendly app. It offers video and text training on a unique memorization method, allows customization of stacks, and provides various practice modes to help you master card sequences.

**Highlights:** Learn memorization method via video and text, Create and practice custom card stacks, Practice specific sections of the deck, Utilize P.A.O. (Person, Action, Object) method, Timed and free play practice modes, Track daily practice streaks

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

**In-app purchases:** none


## Frequently asked questions

### Is Mnemo Major System Trainer free?

Mnemo Major System Trainer costs $12.99, with no in-app purchases.

### Is Master Any Stack free?

Master Any Stack costs $14.99, with no in-app purchases.

### Which has better reviews, Mnemo Major System Trainer or Master Any Stack?

Mnemo Major System Trainer is rated higher. Mnemo Major System Trainer averages 4.4 out of 5 from 18 ratings, while Master Any Stack averages 3.0 from 4 ratings.

### Do Mnemo Major System Trainer or Master Any Stack have ads?

Neither Mnemo Major System Trainer nor Master Any Stack shows ads.

### Which is updated more often, Mnemo Major System Trainer or Master Any Stack?

Mnemo Major System Trainer ships an update every 2 months, and Master Any Stack every 3 weeks. Most recently, Mnemo Major System Trainer was updated on September 19, 2026 and Master Any Stack on August 23, 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.*