# Postnote vs kaerumemo

The clearest difference is in-app purchases: kaerumemo at none against Postnote's 1. kaerumemo also leads on iOS requirement (14.0.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Postnote sells 1 one-off in-app purchase. kaerumemo asks for nothing beyond the download.

Postnote ships an update every 6 weeks, kaerumemo every 3 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Postnote | kaerumemo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Size | 20 MB | 29 MB |
| Requires iOS | 17.0 | **14.0.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [dai kawaguchi](https://appshunter.io/developer/1329440953) | [Shu Matsui](https://appshunter.io/developer/1862815931) |

## What reviewers say

### Postnote

[App page](https://appshunter.io/ios/app/postnote-simple-notes-and-lists/id6505044485)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock note posting limit | $1.99 | one-time |


### kaerumemo

[App page](https://appshunter.io/ios/app/kaerumemo/id6756788644)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Postnote free?

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

### Is kaerumemo free?

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

### Do Postnote or kaerumemo have ads?

Neither Postnote nor kaerumemo shows ads.

### Which is updated more often, Postnote or kaerumemo?

Postnote ships an update every 6 weeks, and kaerumemo every 3 months. Most recently, Postnote was updated on October 30, 2026 and kaerumemo on October 28, 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.*