PRIVACY POLICY
Privacy
Privacy summary
The Japanese Privacy Policy is legally authoritative. This English summary is for convenience only.
- No account registration is required.
- Game records and settings are stored only in your browser’s localStorage—not on our servers.
- Contact form messages are delivered to the operator via Formspree.
- Optional analytics (Google Analytics & Microsoft Clarity) can be disabled in Settings.
- Optional tips are processed by Stripe Payment Link or OFUSE; this site does not collect or store card details.
- Third-party ads are not served yet. If we add them later, we will name the service and opt-out steps in this policy.
How we classify information
Main data types grouped by where they stay and whether they leave your browser.
Stored in your browser only
The following stays in localStorage on your device and is not sent to our servers.
| Item | Stored / sent to | Purpose |
|---|---|---|
| Player name (display) | Device localStorage | In-site display |
| Progress, records, medals | Device localStorage | Resume & records |
| Settings (theme, text size, etc.) | Device localStorage | Customization |
Sent to external services
The following may be sent for analytics, error reporting, or contact handling. It is usage information not collected to directly identify you.
| Item | Stored / sent to | Purpose |
|---|---|---|
| Pages viewed, device info, referrer | Google Analytics / Microsoft Clarity | Usage analytics (can disable in Settings) |
| Errors & technical logs | Sentry | Bug investigation |
| Contact form message | Formspree → operator | Reply & support |
| Payment details | Stripe / OFUSE | Optional tips (not collected by this site) |
Optional user input
The following is collected only when you choose to enter it.
| Item | Stored / sent to | Purpose |
|---|---|---|
| Contact name | Formspree → operator | Reply & support |
| Email address | Formspree → operator | Reply address (if provided) |
| Player name content | Device localStorage | Display only (avoid real names or contact info) |
Optional astronomical data in Moonlit Voyage
Only when you choose “Bring in today’s sky”, Moonlit Voyage requests sunset, the next sunrise and moon illumination from SunriseSunset.io. The request contains fixed Lisbon coordinates and the puzzle date, never your current location, player name, notes or game records. Standard connection information, including your IP address and browser information, reaches the provider. Requests omit cookies and the referring page URL.
Up to seven days of validated sky data are cached in this browser to avoid repeated requests. They are included in browser backups and removed by the site’s data-clear controls. There is no automatic fetching or communication during a voyage. Practice skies work without contacting this provider.