# Zento vs Stone Zen

The clearest difference is in-app purchases: Stone Zen at none against Zento's 1. Zento's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Zento sells 1 one-off in-app purchase. Stone Zen asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Zento | Stone Zen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 33 MB | 138 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Not Another Studio LTD](https://appshunter.io/developer/1896729562) | [Artem Kalmykov](https://appshunter.io/developer/1477211781) |

## What reviewers say

### Zento

[App page](https://appshunter.io/ios/app/zento-zen-loop-puzzle/id6770275298)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock the full game | $0.99 | one-time |


### Stone Zen

[App page](https://appshunter.io/ios/app/stone-zen/id6791721923)

**In-app purchases:** none


## Frequently asked questions

### Is Zento free?

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

### Is Stone Zen free?

Stone Zen is free to download, with no in-app purchases.

### Do Zento or Stone Zen have ads?

Stone Zen shows ads; Zento does not.

### Which is updated more often, Zento or Stone Zen?

Zento ships an update every 3 weeks, and Stone Zen every 3 weeks. Most recently, Zento was updated on November 9, 2026 and Stone Zen on November 10, 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.*