# Kokoon Focus vs stac

The clearest difference is in-app purchases: Kokoon Focus at none against stac's 5. Kokoon Focus also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). stac's advantage is iOS requirement (15.0 vs 18.0). On price and device support there is nothing between them.

Both are free to download. stac sells 5 in-app purchases, starting at $2.99 per month. Kokoon Focus asks for nothing beyond the download.

Kokoon Focus ships an update every 3 weeks, stac every 2 months. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Kokoon Focus | stac |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/kokoon-focus/id6760953958/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 659 MB | 42 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [IGNACIO ANDRES VINKE FERNANDEZ](https://appshunter.io/developer/1886993813) | [Ai To Mobile](https://appshunter.io/developer/1475589426) |

## What reviewers say

### Kokoon Focus

[App page](https://appshunter.io/ios/app/kokoon-focus/id6760953958)

Enhance your concentration with timed focus sessions that reward you with unique collectible creatures. The longer you focus, the rarer the creatures you can hatch and evolve, encouraging consistent productivity.

**Highlights:** Timed focus sessions, Collectible creature hatching, Creature evolution and fusion, Streak tracking, Live Activity on Lock Screen, Unlockable regions and variants

**In-app purchases:** none


### stac

[App page](https://appshunter.io/ios/app/stac-focus-timer-build-world/id6764253760)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| STAC Plus Membership | $2.99 | per month |
| Streak Freeze | $0.99 | one-time |
| boost potion lite | $0.99 | one-time |
| boost potion pro | $1.19 | one-time |
| Demotion Shield | $1.99 | one-time |


## Frequently asked questions

### Is Kokoon Focus free?

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

### Is stac free?

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

### Do Kokoon Focus or stac have ads?

stac shows ads; Kokoon Focus does not.

### Which is updated more often, Kokoon Focus or stac?

Kokoon Focus ships an update every 3 weeks, and stac every 2 months. Most recently, Kokoon Focus was updated on October 7, 2026 and stac on October 25, 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.*