# 潮位アラート vs タイドスコープ

The clearest difference is update cadence: タイドスコープ at weekly against 潮位アラート's every 6 weeks. 潮位アラート's advantage is iOS requirement (15.0 vs 26.2). On ads, in-app purchases and device support there is nothing between them.

潮位アラート ships an update every 6 weeks, タイドスコープ weekly. The most recent releases landed on October 18, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 潮位アラート | タイドスコープ |
| --- | --- | --- |
| Price | **Free** | — |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tidescope/id6760695853/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | — | Free |
| Size | 255 MB | 11 MB |
| Requires iOS | **15.0** | 26.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [OSD LLC](https://appshunter.io/developer/542270544) | [Masahiko Shirai](https://appshunter.io/developer/1885782363) |

## What reviewers say

### 潮位アラート

[App page](https://appshunter.io/ios/app/id6756205355)

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

**In-app purchases:** none


### タイドスコープ

[App page](https://appshunter.io/ios/app/tidescope/id6760695853)

This app provides easy-to-understand tide forecasts based on real-time data from 238 observation stations nationwide. It displays current tide levels, high and low tide times, and tide cycles, along with weather and wave information.

**Highlights:** Real-time tide level display, High/low tide times and heights, Tide cycle display, Tide level graphs with weather, Weather, wave, and wind data, GPS for nearest station, Widget and Apple Watch support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 潮位アラート free?

潮位アラート is free to download, with no in-app purchases.

### Is タイドスコープ free?

Pricing for タイドスコープ is not currently listed on the App Store.

### Do 潮位アラート or タイドスコープ have ads?

Neither 潮位アラート nor タイドスコープ shows ads.

### Which is updated more often, 潮位アラート or タイドスコープ?

潮位アラート ships an update every 6 weeks, and タイドスコープ weekly. Most recently, 潮位アラート was updated on October 18, 2026 and タイドスコープ 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.*