Privacy Policy

Version 2026-11-14 · Star Viewer by XRainier, a trade name of Rainier Studio LLC

Short version: looking at the sky needs no account, and your location never leaves your device. We keep only what an account and Pro need, we never sell data, and there are no ads or trackers.

Using Star Viewer without an account

The sky is computed in your browser. Your location (from a city you pick, numbers you type, or your device if you allow it) and your settings are stored only on your device (browser storage).
We do not use analytics cookies, advertising or third-party trackers. Our hosting provider (Cloudflare) processes standard request data such as IP addresses to deliver the site and protect it from abuse.

If you create an account (for Pro)

Sign-in: your email address and, if you use Google or Apple, the stable account identifier they give us. With Apple “Hide My Email” we receive a private relay address. For email codes, we store a one-way hash of the code for 10 minutes.
Your account: when it was created and last used, your Pro status and end date, keys you redeemed, your favourite stars, and each time you accepted these terms (date, version and country).
Approximate location: country, region and city derived by Cloudflare from your connection, rounded to about 50 km. We do not store IP addresses.
Payments are handled by Stripe. We receive a confirmation, the amount and the plan, never your card details.
Email sign-in codes are sent through Resend. We do not send newsletters or marketing.

How long we keep it, and your choices

Account data stays until you delete your account: Account → Delete my account in the app erases it immediately (payment records required for tax law are kept separately and are not linked to your favourites).
You can ask for a copy or a correction of your data at support@xrainier.com.
Star Viewer is not directed at children under 13, and accounts are for people 13 and older (or the age required where you live).

Changes

If this policy changes in a way that matters, the version date above changes and the app asks signed-in users to accept the new version.

Questions: support@xrainier.com · Rainier Studio LLC (XRainier), Washington, USA.