These Terms of Service ("Terms") govern your use of "Namiyomi — Boat Race Tide & Weather" (the "App"). Please read these Terms carefully before using the App.
1. Service Description
The App provides tide and weather information for boat racing venues, along with bet combination calculators. Tide and weather data is fetched from external APIs.
2. Requirements
An iPhone running iOS 17.0 or later is required.
An internet connection is required for fetching weather and tide data.
3. Age Restriction
The App is intended for users aged 17 and older. It provides information related to public boat racing (kyotei) but does not encourage or promote betting by minors. Purchasing boat race tickets is restricted to persons aged 20 or older under Japanese law (Motorboat Racing Act).
Tide and weather information and calculation results are provided for reference only.
Betting decisions are made at your own judgment and risk.
The developer assumes no responsibility for any financial losses resulting from the use of the App.
The accuracy, completeness, and timeliness of data is not guaranteed. External API outages or delays may result in inaccurate information.
5. Responsible Gambling
Please enjoy public racing responsibly. If you are concerned about gambling addiction, please contact the appropriate support services in your country.
6. In-App Purchases
All App features are available for free.
In-app purchases ("Buy the Dev a Coffee") are optional tips to support the developer, not feature unlocks.
Purchases are consumable. Refunds follow Apple's policies.
7. Data Handling
User preferences (selected venues, themes, etc.) are stored only on your device.
Weather and tide data is fetched from Open-Meteo API and tide736.net. These requests do not include personally identifiable information.
8. Disclaimer
The developer is not liable for any damages arising from the use of the App.
The App is provided "as is" without warranty of fitness for a particular purpose.
The service may be interrupted, modified, or terminated without prior notice.
Some features may become unavailable due to changes or discontinuation of external APIs.
9. Intellectual Property
All intellectual property rights related to the App belong to the developer.
10. Changes to These Terms
These Terms may be updated without prior notice. Changes become effective when posted on this page.
11. Governing Law
These Terms are governed by the laws of Japan. The courts of Japan shall have exclusive jurisdiction.
12. Contact
For questions about these Terms, please contact us at: