# TASS kun vs ZattaMemo

The clearest difference is in-app purchases: TASS kun at none against ZattaMemo's 1. TASS kun also leads on update cadence (every 11 days vs every 3 weeks) and device support (3 vs 1). ZattaMemo's advantage is ads (none vs shown). On price there is nothing between them.

Both are free to download. ZattaMemo sells 1 one-off in-app purchase. TASS kun asks for nothing beyond the download.

TASS kun ships an update every 11 days, ZattaMemo every 3 weeks. The most recent releases landed on October 25, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | TASS kun | ZattaMemo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 3 weeks |
| Size | 5 MB | 3 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [koyo kuze](https://appshunter.io/developer/1862339457) | [Tatsuyoshi Sasaki](https://appshunter.io/developer/1888368184) |

## What reviewers say

### TASS kun

[App page](https://appshunter.io/ios/app/tass-kun/id6756688086)

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

**In-app purchases:** none


### 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 TASS kun free?

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

### Is ZattaMemo free?

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

### Do TASS kun or ZattaMemo have ads?

TASS kun shows ads; ZattaMemo does not.

### Which is updated more often, TASS kun or ZattaMemo?

TASS kun ships an update every 11 days, and ZattaMemo every 3 weeks. Most recently, TASS kun was updated on October 25, 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.*