# Rocket Memo vs ZattaMemo

The clearest difference is update cadence: Rocket Memo at every 10 days against ZattaMemo's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Rocket Memo sells 5 in-app purchases, starting at $0.99 per month and ZattaMemo sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Rocket Memo ships an update every 10 days, ZattaMemo every 3 weeks. The most recent releases landed on September 3, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | Rocket Memo | ZattaMemo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Size | 6 MB | 3 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yoshinori Kasaya](https://appshunter.io/developer/1460652803) | [Tatsuyoshi Sasaki](https://appshunter.io/developer/1888368184) |

## What reviewers say

### Rocket Memo

[App page](https://appshunter.io/ios/app/rocket-memo/id1472141702)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rocket Pro Monthly | $0.99 | per month |
| Rocket Pro Yearly | $5.99 | per year |
| Small Coffee | $0.99 | one-time |
| Croissant & Coffee | $3.99 | one-time |
| Cake & Coffee | $9.99 | one-time |


### 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 Rocket Memo free?

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

### Is ZattaMemo free?

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

### Do Rocket Memo or ZattaMemo have ads?

Neither Rocket Memo nor ZattaMemo shows ads.

### Which is updated more often, Rocket Memo or ZattaMemo?

Rocket Memo ships an update every 10 days, and ZattaMemo every 3 weeks. Most recently, Rocket Memo was updated on September 3, 2026 and ZattaMemo on August 24, 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.*