# Koza vs Mossy

The clearest difference is iOS requirement: Koza at 15.1 against Mossy's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Koza sells 1 in-app purchase, starting at $29.99 per year and Mossy sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Koza | Mossy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Size | 72 MB | 212 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) | [Claudiu Valentin Sararu](https://appshunter.io/developer/1884891322) |

## What reviewers say

### Koza

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

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Koza Pro Yıllık | $29.99 | per year |


### Mossy

[App page](https://appshunter.io/ios/app/mossy-adhd-focus-timer/id6806260579)

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mossy Pro Weekly | $1.99 | per 7 days |
| Mossy Pro Yearly | $14.99 | per year |
| Mossy Pro Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is Koza free?

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

### Is Mossy free?

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

### Do Koza or Mossy have ads?

Neither Koza nor Mossy shows ads.

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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.*