# kaerumemo vs When Again?

The clearest difference is in-app purchases: kaerumemo at none against When Again?'s 1. kaerumemo also leads on ads (none vs shown) and device support (3 vs 1). When Again?'s advantage is update cadence (daily vs every 3 months). On price there is nothing between them.

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

kaerumemo ships an update every 3 months, When Again? daily. The most recent releases landed on October 9, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | kaerumemo | When Again? |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Daily** |
| Size | 29 MB | 59 MB |
| Requires iOS | **14.0.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shu Matsui](https://appshunter.io/developer/1862815931) | [Masamune Hiroiwa](https://appshunter.io/developer/1882916292) |

## What reviewers say

### kaerumemo

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

**Features:** macOS Compatibility

**In-app purchases:** none


### When Again?

[App page](https://appshunter.io/ios/app/when-again/id6772761503)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム（買い切り） | $4.99 | one-time |


## Frequently asked questions

### Is kaerumemo free?

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

### Is When Again? free?

When Again? is free to download, with in-app purchases available.

### Do kaerumemo or When Again? have ads?

When Again? shows ads; kaerumemo does not.

### Which is updated more often, kaerumemo or When Again??

kaerumemo ships an update every 3 months, and When Again? daily. Most recently, kaerumemo was updated on October 9, 2026 and When Again? on October 25, 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.*