# Brain spa(N3) vs unfog

The clearest difference is update cadence: Brain spa(N3) at every 6 weeks against unfog's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Brain spa(N3) ships an update every 6 weeks, unfog every 7 months. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Brain spa(N3) | unfog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 7 months |
| Size | 12 MB | 54 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [N.CER Co., Limited](https://appshunter.io/developer/1537925998) | [Timo Hegnauer](https://appshunter.io/developer/1513815057) |

## What reviewers say

### Brain spa(N3)

[App page](https://appshunter.io/ios/app/brain-span3/id6478898385)

**Features:** macOS Compatibility

**In-app purchases:** none


### unfog

[App page](https://appshunter.io/ios/app/unfog-stop-mental-clutter/id6749512426)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Brain spa(N3) free?

Brain spa(N3) is free to download, with no in-app purchases.

### Is unfog free?

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

### Do Brain spa(N3) or unfog have ads?

Neither Brain spa(N3) nor unfog shows ads.

### Which is updated more often, Brain spa(N3) or unfog?

Brain spa(N3) ships an update every 6 weeks, and unfog every 7 months. Most recently, Brain spa(N3) was updated on October 12, 2026 and unfog on October 9, 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.*