# Kidney Note vs きこえの森

The clearest difference is in-app purchases: きこえの森 at none against Kidney Note's 1. きこえの森 also leads on iOS requirement (15.0 vs 26.6). Kidney Note's advantage is update cadence (every 9 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Kidney Note sells 1 in-app purchase, starting at $0.99 per month. きこえの森 asks for nothing beyond the download.

Kidney Note ships an update every 9 days, きこえの森 monthly. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Kidney Note | きこえの森 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 9 days** | Monthly |
| Size | 18 MB | 121 MB |
| Requires iOS | 26.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [shinichi tanimoto](https://appshunter.io/developer/338978015) | [Takayuki Tsuji](https://appshunter.io/developer/1690024081) |

## What reviewers say

### Kidney Note

[App page](https://appshunter.io/ios/app/kidney-note/id6745475185)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Multiple User Registration | $0.99 | per month |


### きこえの森

[App page](https://appshunter.io/ios/app/id6769210825)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kidney Note free?

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

### Is きこえの森 free?

きこえの森 is free to download, with no in-app purchases.

### Do Kidney Note or きこえの森 have ads?

Both Kidney Note and きこえの森 show ads.

### Which is updated more often, Kidney Note or きこえの森?

Kidney Note ships an update every 9 days, and きこえの森 monthly. Most recently, Kidney Note was updated on October 16, 2026 and きこえの森 on October 10, 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.*