# キーワードメモー忘れる、を価値に変える vs Second Brain Vault

The clearest difference is iOS requirement: キーワードメモー忘れる、を価値に変える at 18.5 against Second Brain Vault's 26.0. On price and in-app purchases there is nothing between them.

Both are free to download. キーワードメモー忘れる、を価値に変える sells 3 in-app purchases, starting at $1.99 per month and Second Brain Vault sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | キーワードメモー忘れる、を価値に変える | Second Brain Vault |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Size | 4 MB | 2 MB |
| Requires iOS | **18.5** | 26.0 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [atsuko imai](https://appshunter.io/developer/1830783417) | [Byoungho Kim](https://appshunter.io/developer/1888452963) |

## What reviewers say

### キーワードメモー忘れる、を価値に変える

[App page](https://appshunter.io/ios/app/id6749497390)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月額プレミアム | $1.99 | per month |
| 年額プレミアム | $9.99 | per year |
| プレミアム3日間パス | $6.99 | one-time |


### Second Brain Vault

[App page](https://appshunter.io/ios/app/second-brain-vault/id6782200821)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Second Brain Vault (Lifetime) | $17.99 | one-time |


## Frequently asked questions

### Is キーワードメモー忘れる、を価値に変える free?

キーワードメモー忘れる、を価値に変える is free to download, with in-app purchases available.

### Is Second Brain Vault free?

Second Brain Vault is free to download, with in-app purchases available.

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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.*