# タイドと気象情報 vs 海天気.jp

The clearest difference is review sentiment: 海天気.jp at 85% against タイドと気象情報's 0%. 海天気.jp also leads on in-app purchases (none vs 4). タイドと気象情報's advantage is update cadence (fortnightly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. タイドと気象情報 sells 4 in-app purchases, starting at $0.49 per month. 海天気.jp asks for nothing beyond the download.

タイドと気象情報 ships an update fortnightly, 海天気.jp every 4 months. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | タイドと気象情報 | 海天気.jp |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **85.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 31 MB | 37 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mitsuhiro Shirai](https://appshunter.io/developer/602643484) | [Risesystem, inc.](https://appshunter.io/developer/427437064) |

## What reviewers say

### タイドと気象情報

[App page](https://appshunter.io/ios/app/surftidex/id1637360116)

This app provides tide graphs, wave information, and weather forecasts for marine sports like surfing and fishing. It displays information in customizable cards, offering detailed insights into tides, weather patterns, and news. Supports widgets and Apple Watch for convenient access.

**Highlights:** Tide graphs and forecasts, Wave and weather information, Customizable information cards, Weather map and nowcasting, Keyword-based news aggregation, Web link saving, Widget and Apple Watch support

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ブロンズ | $0.49 | per month |
| シルバー | $1.99 | per 3 months |
| ゴールド | $2.99 | per 6 months |
| プラチナ | $3.99 | per year |


### 海天気.jp

[App page](https://appshunter.io/ios/app/jp/id1641843175)

Get detailed, hourly weather forecasts for over 8,000 marine spots, including wind, temperature, and wave height. Visualize precipitation with clear icons and access 14-day outlooks for planning. Also provides city-level forecasts and rain cloud movement.

**Highlights:** Hourly forecasts for 8,000+ marine spots, Up to 84-hour pinpoint weather predictions, 14-day weather outlooks, Rain cloud and lightning movement visualization, Tide graphs and sea temperature maps, City-level weather forecasts, Favorite spot bookmarking

**In-app purchases:** none


## Frequently asked questions

### Is タイドと気象情報 free?

タイドと気象情報 is free to download, with in-app purchases available.

### Is 海天気.jp free?

海天気.jp is free to download, with no in-app purchases.

### Do タイドと気象情報 or 海天気.jp have ads?

Both タイドと気象情報 and 海天気.jp show ads.

### Which is updated more often, タイドと気象情報 or 海天気.jp?

タイドと気象情報 ships an update fortnightly, and 海天気.jp every 4 months. Most recently, タイドと気象情報 was updated on October 8, 2026 and 海天気.jp on October 15, 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.*