# AItheaOS vs Mozaic

The clearest difference is update cadence: Mozaic at weekly against AItheaOS's every 6 months. On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. AItheaOS sells 3 in-app purchases, starting at $14.99 per month and Mozaic sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

AItheaOS ships an update every 6 months, Mozaic weekly. The most recent releases landed on September 28, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | AItheaOS | Mozaic |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | Every 6 months | **Weekly** |
| Size | 47 MB | 76 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Erzhidian Technology Co., Ltd.](https://appshunter.io/developer/1865610265) | [Mozaic Day LLC](https://appshunter.io/developer/6776249261) |

## What reviewers say

### AItheaOS

[App page](https://appshunter.io/ios/app/aitheaos/id6757254857)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AItheaOS Pro (1 Month) | $14.99 | per month |
| AItheaOS Pro (1 Year) | $119.99 | per year |
| Full Report Access | $2.99 | one-time |


### Mozaic

[App page](https://appshunter.io/ios/app/mozaic-visual-diary/id6776249259)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Everyday | $2.99 | per month |
| Everyday Plus | $4.99 | per month |


## Frequently asked questions

### Is AItheaOS free?

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

### Is Mozaic free?

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

### Which is updated more often, AItheaOS or Mozaic?

AItheaOS ships an update every 6 months, and Mozaic weekly. Most recently, AItheaOS was updated on September 28, 2026 and Mozaic on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*