# Stack Tower vs Zen Stack Masters

The clearest difference is in-app purchases: Stack Tower at none against Zen Stack Masters's 4. Stack Tower also leads on iOS requirement (12.0 vs 18.6). Zen Stack Masters's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Zen Stack Masters sells 4 one-off in-app purchases. Stack Tower asks for nothing beyond the download.

Stack Tower ships an update every 2 days, Zen Stack Masters every 4 days. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Stack Tower | Zen Stack Masters |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 4 days |
| Size | 57 MB | 27 MB |
| Requires iOS | **12.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Naoya Itoi](https://appshunter.io/developer/1723494033) | [Gal Itach](https://appshunter.io/developer/1867158254) |

## What reviewers say

### Stack Tower

[App page](https://appshunter.io/ios/app/stack-tower-balance-game/id6741504664)

**Features:** macOS Compatibility

**In-app purchases:** none


### Zen Stack Masters

[App page](https://appshunter.io/ios/app/zen-stack-masters/id6758891728)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zen Master | Free | one-time |
| Second Chance Tokens | $0.99 | one-time |
| Infinite Zen Mode | $5.99 | one-time |
| 1000 Tokens Deal | $99.99 | one-time |


## Frequently asked questions

### Is Stack Tower free?

Stack Tower is free to download, with no in-app purchases.

### Is Zen Stack Masters free?

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

### Do Stack Tower or Zen Stack Masters have ads?

Stack Tower shows ads; Zen Stack Masters does not.

### Which is updated more often, Stack Tower or Zen Stack Masters?

Stack Tower ships an update every 2 days, and Zen Stack Masters every 4 days. Most recently, Stack Tower was updated on September 17, 2026 and Zen Stack Masters on September 21, 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.*