# TidalWatch vs SurfTideWatch (Tide graph)

The clearest difference is in-app purchases: SurfTideWatch (Tide graph) at none against TidalWatch's 20. SurfTideWatch (Tide graph) also leads on review sentiment (24% vs 0%). TidalWatch's advantage is ads (none vs shown) and iOS requirement (9.0 vs 13.2). On price, update cadence and device support there is nothing between them.

Both are free to download. TidalWatch sells 20 in-app purchases, starting at $0.99 per year. SurfTideWatch (Tide graph) asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 12, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | TidalWatch | SurfTideWatch (Tide graph) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.6 (8 ratings)](https://appshunter.io/ios/app/surftidewatch-tide-graph/id1507871573/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | 0.0% of reviews | **24.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 53 MB | 27 MB |
| Requires iOS | **9.0** | 13.2 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Shinichi HISAMATSU](https://appshunter.io/developer/398895004) | [Mitsuhiro Shirai](https://appshunter.io/developer/602643484) |

## What reviewers say

### TidalWatch

[App page](https://appshunter.io/ios/app/tidalwatch/id1092875095)

This app provides tide charts and barometric pressure forecasts for over 300 locations in Japan. Quickly check tide times and conditions directly on your Apple Watch, ideal for fishing, surfing, or shellfish gathering without needing your iPhone.

**Highlights:** Apple Watch tide charts, Barometric pressure forecasts, Over 300 Japanese locations, Tide and high/low tide times, Quick access on Apple Watch

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

**In-app purchases (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 福島県 年間ライセンス | $0.99 | per year |
| 千葉県 年間ライセンス | $0.99 | per year |
| 福岡県 年間ライセンス | $0.99 | per year |
| 佐賀県 年間ライセンス | $0.99 | per year |
| 長崎県 年間ライセンス | $0.99 | per year |
| 熊本県 年間ライセンス | $0.99 | per year |
| 大分県 年間ライセンス | $0.99 | per year |
| 宮崎県 年間ライセンス | $0.99 | per year |
| 鹿児島県 年間ライセンス | $0.99 | per year |
| 沖縄県 年間ライセンス | $0.99 | per year |
| 年間ライセンス 北海道 | $0.99 | per year |
| 北海道地方 年間ライセンス | $1.99 | per year |
| 北海道・東北地方 年間ライセンス | $1.99 | per year |
| 関東・信越地方 年間ライセンス | $1.99 | per year |
| 北陸・東海地方 年間ライセンス | $1.99 | per year |
| 近畿地方 年間ライセンス | $1.99 | per year |
| 四国地方 年間ライセンス | $1.99 | per year |
| 中国地方 年間ライセンス | $1.99 | per year |
| 九州・沖縄地方 年間ライセンス | $1.99 | per year |
| 年間ライセンス 全国 | $4.99 | per year |


### SurfTideWatch (Tide graph)

[App page](https://appshunter.io/ios/app/surftidewatch-tide-graph/id1507871573)

Visualize tide graphs and astronomical events for marine sports. Select from thousands of global tide points and synchronize data to your Apple Watch. Customize place names and utilize complications for quick access to tide information.

**Highlights:** Tide graph visualization, Global tide point selection (10,000+), Synchronization with Apple Watch, Customizable place names, Astronomical event display (sunrise, sunset), Apple Watch complications support

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

**In-app purchases:** none


## Frequently asked questions

### Is TidalWatch free?

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

### Is SurfTideWatch (Tide graph) free?

SurfTideWatch (Tide graph) is free to download, with no in-app purchases.

### Do TidalWatch or SurfTideWatch (Tide graph) have ads?

SurfTideWatch (Tide graph) shows ads; TidalWatch does not.

### Which is updated more often, TidalWatch or SurfTideWatch (Tide graph)?

TidalWatch ships an update every 3 weeks, and SurfTideWatch (Tide graph) every 3 weeks. Most recently, TidalWatch was updated on October 12, 2026 and SurfTideWatch (Tide graph) on October 20, 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.*