# Stack Master vs AC2PHONE

The clearest difference is price: Stack Master at $24.99 against AC2PHONE's $29.99. Stack Master also leads on device support (3 vs 1) and iOS requirement (11.0 vs 18.6). AC2PHONE's advantage is update cadence (every 4 days vs every 3 weeks) and chart position (#194 vs unranked). On ads and in-app purchases there is nothing between them.

Stack Master costs $24.99 and AC2PHONE $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stack Master ships an update every 3 weeks, AC2PHONE every 4 days. The most recent releases landed on October 8, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Stack Master | AC2PHONE |
| --- | --- | --- |
| Price | **$24.99** | $29.99 |
| Rating | **[3.8 (9 ratings)](https://appshunter.io/ios/app/stack-master/id1272229335/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Paid | — |
| Best chart rank | — | **#194** |
| Size | 36 MB | 18 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Devious-Monkey](https://appshunter.io/developer/388388527) | [sebastien macak](https://appshunter.io/developer/1330334721) |

## 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


### AC2PHONE

[App page](https://appshunter.io/ios/app/ac2phone/id1334253650)

**Currently charting:** #194 Top Paid · Entertainment (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stack Master free?

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

### Is AC2PHONE free?

AC2PHONE costs $29.99, with no in-app purchases.

### Do Stack Master or AC2PHONE have ads?

Neither Stack Master nor AC2PHONE shows ads.

### Which is updated more often, Stack Master or AC2PHONE?

Stack Master ships an update every 3 weeks, and AC2PHONE every 4 days. Most recently, Stack Master was updated on October 8, 2026 and AC2PHONE on September 26, 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.*