# Brain Grid vs Stone Zen

The clearest difference is in-app purchases: Stone Zen at none against Brain Grid's 9. Brain Grid's advantage is ads (none vs shown) and update cadence (every 11 days vs every 3 weeks). On price and device support there is nothing between them.

Both are free to download. Brain Grid sells 9 in-app purchases, starting at $1.99 per month. Stone Zen asks for nothing beyond the download.

Brain Grid ships an update every 11 days, Stone Zen every 3 weeks. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Brain Grid | Stone Zen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 11 days** | Every 3 weeks |
| Size | 8 MB | 138 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wolf Technologies Ltd](https://appshunter.io/developer/1893245521) | [Artem Kalmykov](https://appshunter.io/developer/1477211781) |

## What reviewers say

### Brain Grid

[App page](https://appshunter.io/ios/app/brain-grid/id6787909351)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium+ Monthly | $3.99 | per month |
| Premium Annual | $14.99 | per year |
| Premium+ Annual | $29.99 | per year |
| Starter Pack | $0.99 | one-time |
| 10 Undos | $0.99 | one-time |
| 10 Bombs | $0.99 | one-time |
| 25 Undos | $1.99 | one-time |
| 25 Bombs | $1.99 | one-time |


### Stone Zen

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

**In-app purchases:** none


## Frequently asked questions

### Is Brain Grid free?

Brain Grid 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 Brain Grid or Stone Zen have ads?

Stone Zen shows ads; Brain Grid does not.

### Which is updated more often, Brain Grid or Stone Zen?

Brain Grid ships an update every 11 days, and Stone Zen every 3 weeks. Most recently, Brain Grid was updated on October 31, 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.*