# 避難所 vs AquaTide

The clearest difference is iOS requirement: 避難所 at 15.6 against AquaTide's 26.2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 避難所 sells 4 one-off in-app purchases and AquaTide sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 避難所 | AquaTide |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 93 MB | 8 MB |
| Requires iOS | **15.6** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [hidehiko aihara](https://appshunter.io/developer/1178520609) | [MASAHIRO IINUMA](https://appshunter.io/developer/1891196056) |

## What reviewers say

### 避難所

[App page](https://appshunter.io/ios/app/id6466737359)

This app helps you find shelters, check weather radar, and view hazard maps during disasters. It allows you to search for shelters by region or type, track rainfall, and identify dangerous areas. You can also save your favorite locations for quick access.

**Highlights:** Shelter search by region and type, Real-time rain cloud information, Hazard map display (flood, tsunami, etc.), Shelters categorized by disaster type, Favorite location registration

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee (Regular) | $0.49 | one-time |
| Coffee (Large) | $1.99 | one-time |
| アプリケーション開発者への応援募金 | $1.99 | one-time |
| Cake Set | $5.99 | one-time |


### AquaTide

[App page](https://appshunter.io/ios/app/aquatide/id6761738336)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Apple Watch Features | $2.99 | one-time |


## Frequently asked questions

### Is 避難所 free?

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

### Is AquaTide free?

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

### Do 避難所 or AquaTide have ads?

Both 避難所 and AquaTide show ads.

### Which is updated more often, 避難所 or AquaTide?

避難所 ships an update fortnightly, and AquaTide fortnightly. Most recently, 避難所 was updated on November 3, 2026 and AquaTide on October 31, 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.*