# Koza vs Kissa

The clearest difference is in-app purchases: Koza at none against Kissa's 5. Koza also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Kissa sells 5 in-app purchases, starting at $9.99 per 3 months. Koza asks for nothing beyond the download.

Koza ships an update every 8 days, Kissa fortnightly. The most recent releases landed on October 18, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Koza | Kissa |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Fortnightly |
| Size | 80 MB | 232 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KOZA LLC](https://appshunter.io/developer/1845715206) | [Christian Andrade](https://appshunter.io/developer/1462755823) |

## What reviewers say

### Koza

[App page](https://appshunter.io/ios/app/koza-find-your-study-buddy/id6754465784)

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

**In-app purchases:** none


### Kissa

[App page](https://appshunter.io/ios/app/kissa-cozy-focus-timer/id6808445372)

**Features:** macOS Compatibility, Family Sharing, iPhone Duo support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kissa Pro Quarterly | $9.99 | per 3 months |
| Kissa Pro Annual | $19.99 | per year |
| PRO Annualy Family | $24.99 | per year |
| PRO - Lifetime | $29.99 | one-time |
| PRO Family Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is Koza free?

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

### Is Kissa free?

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

### Do Koza or Kissa have ads?

Neither Koza nor Kissa shows ads.

### Which is updated more often, Koza or Kissa?

Koza ships an update every 8 days, and Kissa fortnightly. Most recently, Koza was updated on October 18, 2026 and Kissa on October 29, 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.*