# Zen Stack Masters vs Screen Protector Bubble Game

The clearest difference is price: Zen Stack Masters at Free against Screen Protector Bubble Game's $1.29. Zen Stack Masters also leads on iOS requirement (18.6 vs 26.0). Screen Protector Bubble Game's advantage is in-app purchases (none vs 4). On ads and device support there is nothing between them.

Zen Stack Masters is free to download; Screen Protector Bubble Game costs $1.29 up front. Zen Stack Masters sells 4 one-off in-app purchases. Screen Protector Bubble Game asks for nothing beyond the download.

## The numbers

| Metric | Zen Stack Masters | Screen Protector Bubble Game |
| --- | --- | --- |
| Price | **Free** | $1.29 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 days | — |
| Size | 27 MB | 3 MB |
| Requires iOS | **18.6** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Gal Itach](https://appshunter.io/developer/1867158254) | [Ryota Kando](https://appshunter.io/developer/1813194957) |

## What reviewers say

### 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 |


### Screen Protector Bubble Game

[App page](https://appshunter.io/ios/app/screen-protector-bubble-game/id6766319232)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zen Stack Masters free?

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

### Is Screen Protector Bubble Game free?

Screen Protector Bubble Game costs $1.29, with no in-app purchases.

### Do Zen Stack Masters or Screen Protector Bubble Game have ads?

Neither Zen Stack Masters nor Screen Protector Bubble Game shows ads.

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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.*