# Stack Master vs VRTX

The clearest difference is price: VRTX at Free against Stack Master's $24.99. VRTX also leads on rating (5.0 vs 3.8) and review sentiment (100% vs 83%). Stack Master's advantage is in-app purchases (none vs 23) and ratings volume (9 vs 1). On update cadence, ads and device support there is nothing between them.

VRTX is free to download; Stack Master costs $24.99 up front. VRTX sells 23 one-off in-app purchases. Stack Master asks for nothing beyond the download.

VRTX holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Stack Master has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 83% of Stack Master's written reviews are positive against 100% of VRTX's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 26, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Stack Master | VRTX |
| --- | --- | --- |
| Price | $24.99 | **Free** |
| Rating | [3.8 (9 ratings)](https://appshunter.io/ios/app/stack-master/id1272229335/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vrtx/id6738747388/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 36 MB | 99 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Devious-Monkey](https://appshunter.io/developer/388388527) | [Guillaume Bellut](https://appshunter.io/developer/817442888) |

## What reviewers say

### Stack Master

[App page](https://appshunter.io/ios/app/stack-master/id1272229335)

Master your favorite card stacks with this mobile training application. It offers multiple training modes and challenges to analyze your weaknesses and improve your learning curve. Supports various pre-set and custom stacks.

**Highlights:** Multiple training modes, 18 funny challenges, Supports pre-set stacks, Create custom stacks, Publish scores and compare with friends, Specialized training modules

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

**In-app purchases:** none


### VRTX

[App page](https://appshunter.io/ios/app/vrtx/id6738747388)

This tool instantly generates acrostics for any word, perfect for creating unique storytelling routines in magic tricks. It offers easy export options and integrates with other magic applications for advanced functionality.

**Highlights:** Instant acrostic generation, Creative storytelling routines, Easy export to notes or sharing, Seamless API integration with magic apps, Dice-controlled acrostic selection, Expanded dictionary options

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

**In-app purchases (23)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dizionario delle destinazioni | Free | one-time |
| Dicionário de Destino | Free | one-time |
| Reisezielwörterbuch | Free | one-time |
| Dictionnaire de destinations | Free | one-time |
| Destinations Dictionary | Free | one-time |
| Dizionario dei marchi | $4.99 | one-time |
| Dizionario degli animali | $4.99 | one-time |
| Dizionario degli oggetti | $4.99 | one-time |
| Dicionário de Objetos | $4.99 | one-time |
| Woordenboek van beroemdheden | $4.99 | one-time |
| Dicionário de Marcas | $4.99 | one-time |
| Dicionário de nomes | $4.99 | one-time |
| Dicionário de celebridades | $4.99 | one-time |
| Promi-Wörterbuch | $4.99 | one-time |
| Tierlexikon | $4.99 | one-time |
| Dictionnaire de prénoms | $4.99 | one-time |
| Dictionnaire d'objets | $4.99 | one-time |
| Animals Dictionary | $4.99 | one-time |
| Names Dictionary | $4.99 | one-time |
| Dictionnaire de marques | $4.99 | one-time |
| Celebrities Dictionary | $4.99 | one-time |
| Objects Dictionary | $4.99 | one-time |
| Full Version | $134.99 | one-time |


## Frequently asked questions

### Is Stack Master free?

Stack Master costs $24.99, with no in-app purchases.

### Is VRTX free?

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

### Which has better reviews, Stack Master or VRTX?

VRTX is rated higher. Stack Master averages 3.8 out of 5 from 9 ratings, while VRTX averages 5.0 from 1 ratings.

### Do Stack Master or VRTX have ads?

Neither Stack Master nor VRTX shows ads.

### Which is updated more often, Stack Master or VRTX?

Stack Master ships an update every 3 weeks, and VRTX every 3 weeks. Most recently, Stack Master was updated on October 26, 2026 and VRTX on October 14, 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.*