# 福岡県PM2.5・大気環境速報 vs かつラッパ

The clearest difference is ads: かつラッパ at none against 福岡県PM2.5・大気環境速報's shown. 福岡県PM2.5・大気環境速報's advantage is update cadence (every 7 months vs every 33 months) and iOS requirement (15.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

福岡県PM2.5・大気環境速報 ships an update every 7 months, かつラッパ every 33 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 福岡県PM2.5・大気環境速報 | かつラッパ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 7 months** | Every 33 months |
| Size | 13 MB | 2 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NISHI TAKASHI](https://appshunter.io/developer/837194947) | [葛飾区](https://appshunter.io/developer/1532060290) |

## What reviewers say

### 福岡県PM2.5・大気環境速報

[App page](https://appshunter.io/ios/app/pm25/id1257641427)

**Features:** macOS Compatibility

**In-app purchases:** none


### かつラッパ

[App page](https://appshunter.io/ios/app/id1532060288)

**In-app purchases:** none


## Frequently asked questions

### Is 福岡県PM2.5・大気環境速報 free?

福岡県PM2.5・大気環境速報 is free to download, with no in-app purchases.

### Is かつラッパ free?

かつラッパ is free to download, with no in-app purchases.

### Do 福岡県PM2.5・大気環境速報 or かつラッパ have ads?

福岡県PM2.5・大気環境速報 shows ads; かつラッパ does not.

### Which is updated more often, 福岡県PM2.5・大気環境速報 or かつラッパ?

福岡県PM2.5・大気環境速報 ships an update every 7 months, and かつラッパ every 33 months. Most recently, 福岡県PM2.5・大気環境速報 was updated on October 24, 2026 and かつラッパ on October 27, 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.*