# NoteAtlas vs ZattaMemo

The clearest difference is update cadence: NoteAtlas at every 6 days against ZattaMemo's every 3 weeks. NoteAtlas also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. NoteAtlas sells 2 in-app purchases, starting at $1.99 per month and ZattaMemo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

NoteAtlas ships an update every 6 days, ZattaMemo every 3 weeks. The most recent releases landed on October 7, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | NoteAtlas | ZattaMemo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Size | 50 MB | 3 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tirin](https://appshunter.io/developer/1665717789) | [Tatsuyoshi Sasaki](https://appshunter.io/developer/1888368184) |

## What reviewers say

### NoteAtlas

[App page](https://appshunter.io/ios/app/noteatlas-chat-style-notes/id6751585745)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| NoteAtlas Monthly | $1.99 | per month |
| NoteAtlas Annual | $79.99 | per year |


### ZattaMemo

[App page](https://appshunter.io/ios/app/zattamemo/id6761243555)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZattaMemo Upgrade | $3.99 | one-time |


## Frequently asked questions

### Is NoteAtlas free?

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

### Is ZattaMemo free?

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

### Do NoteAtlas or ZattaMemo have ads?

Neither NoteAtlas nor ZattaMemo shows ads.

### Which is updated more often, NoteAtlas or ZattaMemo?

NoteAtlas ships an update every 6 days, and ZattaMemo every 3 weeks. Most recently, NoteAtlas was updated on October 7, 2026 and ZattaMemo on October 13, 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.*