Postnote vs kaerumemo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Postnote
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Postnote is a simple, intuitive note manager built for unmatched speed. Capture your thoughts the moment they arise, with zero friction. With seamless iCloud sync, your ideas stay organized and accessible across all your devices, making it effortless to jot down and review your notes anytime, anywhere.
kaerumemo
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A simple app for quick notes. Great for ideas, to-do lists, and everyday notes.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Postnote | kaerumemo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 14.0.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | dai kawaguchi | Shu Matsui |
In-app purchases
Postnote
- Unlock note posting limit$1.99
kaerumemo
No in-app purchases
