# メモ帳 vs Quantify 4

The clearest difference is ads: Quantify 4 at none against メモ帳's shown. Quantify 4 also leads on device support (3 vs 1). メモ帳's advantage is update cadence (every 8 days vs every 21 months). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. メモ帳 sells 1 in-app purchase, starting at $1.49 per month and Quantify 4 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

メモ帳 ships an update every 8 days, Quantify 4 every 21 months. Both last shipped on October 27, 2026.

## The numbers

| Metric | メモ帳 | Quantify 4 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 21 months |
| Size | 34 MB | 89 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Seiya Iwasaki](https://appshunter.io/developer/1192742456) | [KENJI KANEMOTO](https://appshunter.io/developer/402720982) |

## What reviewers say

### メモ帳

[App page](https://appshunter.io/ios/app/id1501022196)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $1.49 | per month |


### Quantify 4

[App page](https://appshunter.io/ios/app/quantify-4/id6448651638)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.49 | one-time |


## Frequently asked questions

### Is メモ帳 free?

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

### Is Quantify 4 free?

Quantify 4 is free to download, with in-app purchases available.

### Do メモ帳 or Quantify 4 have ads?

メモ帳 shows ads; Quantify 4 does not.

### Which is updated more often, メモ帳 or Quantify 4?

メモ帳 ships an update every 8 days, and Quantify 4 every 21 months. Most recently, メモ帳 was updated on October 27, 2026 and Quantify 4 on October 27, 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.*