The Spare Tile Privacy Policy

Effective date: 4 November 2026.

The Spare Tile is operated by Twentytrends LLC. This policy describes how The Spare Tile handles information when you create a profile, discover or host mahjong games, and interact with other players.

Information The Spare Tile handles

You provide account, profile, game, and support information directly. The Spare Tile records participation, reports, blocks, and notification information when you use those features. Service providers may generate technical information while operating the service.

• Account information: your email address and account identifier, used to send sign-in codes and maintain your account.
• Profile information: your name, city, biography, mahjong styles and skill levels, interests, and optional profile photo.
• Game information: titles, notes, dates, times, city, neighborhood, venue information, exact addresses, visibility, seat capacity, and hosting information.
• Location information: The Spare Tile does not access your device's GPS location. You enter your profile city and game venue details, including exact addresses. These venue details can identify a precise home or meetup place; they are not measurements of a user's or device's position. Hosting and service providers may also infer an approximate location, such as a city, from your IP address while operating and securing the service.
• Participation information: join requests, host decisions, invitations and responses, and saved games.
• Safety information: reports, selected report reasons, reported accounts, associated games, and block relationships.
• Notifications: in-app notifications, whether they have been marked as read, and, if you enable push notifications, an Apple device token and a random app-installation identifier used to associate delivery with the signed-in account. The Spare Tile does not use these identifiers for advertising or cross-app tracking.
• Technical information: our hosting and service providers receive and retain operational records, which can include IP addresses, approximate location inferred from IP addresses, app/SDK and operating-system information, authentication/session and request metadata, request timings, and error information, to operate, troubleshoot, secure, and maintain the performance of The Spare Tile. Some records are associated with your account or session.

How information is used

The Spare Tile uses information to sign you in, maintain your profile, show relevant games, organize participation, notify you about game activity, process safety reports and blocks, answer support requests, and protect the service.

Discover uses the city on your profile and hides games from blocked hosts. Saved games appear in your personal list. Discover's style, skill, date, and seat-availability filters, player-name searches, and timezone searches run on your device. Search terms and temporary filter selections are not saved as a search history. Game scheduling values and profile preferences are saved when you submit them.

We also use information where reasonably necessary to comply with legal obligations and resolve disputes.

The Spare Tile does not sell personal information. The current app has no advertising, tracking, or analytics SDKs, and we do not currently use personal information for targeted advertising.

What other players can see

Other signed-in players can see profile information made available through The Spare Tile and public game details such as the host's name, game title, city, neighborhood, time, and notes. Private games are available to their hosts and relevant invited players.

For a home or private venue, the exact address is stored separately and is available to the host and appropriately approved or accepted players. Public-venue addresses may appear in public listings. Do not put a home address or other private information into a public title, note, or biography.

Reports are not available for regular app users to browse. Block information is restricted to the related accounts and authorized service administration.

Service providers

The Spare Tile uses these services to operate the relevant parts of the app and support:

• Supabase: authentication, database storage, optional profile-photo storage, and backend functions. Processing of The Spare Tile data through these services is subject to the applicable Supabase service terms and data-processing arrangements. See the Supabase Data Processing Addendum.
• Apple/APNs: delivery of push notifications when enabled. The Spare Tile sends device-token information and notification content to Apple Push Notification service for delivery, subject to Apple's applicable service terms and privacy practices. See Apple's APNs documentation.
• Support email: messages sent to our support address pass through Google's email services under the mailbox's current mail routing. These services handle the sender's address, message content, and any attachments as part of email delivery and correspondence, subject to the applicable email-service terms and privacy arrangements. See Google's Privacy Policy.

The information each provider handles, its processing role, and its permitted uses depend on the relevant service and applicable terms, data-processing arrangements, and privacy requirements. The Spare Tile remains responsible for its own handling and sharing of personal information under this policy and applicable requirements.

Third parties with whom The Spare Tile shares personal information are required to provide the same or equivalent protection of that information as described in this policy and as required by applicable privacy requirements. This requirement applies to the The Spare Tile personal information they receive and does not exclude necessary technical or operational processing permitted under their applicable terms and data-processing arrangements.

Information may be processed in the locations used by The Spare Tile and its service providers. The Spare Tile may also disclose information where required by law or necessary to investigate abuse, protect people, or defend legal rights.

Retention

We retain personal information for as long as reasonably necessary to provide and operate The Spare Tile, maintain safety and security, handle reports and support requests, comply with legal obligations, and resolve disputes. When information is no longer reasonably necessary for these purposes, we delete or anonymize it where appropriate.

A finished or cancelled game does not automatically erase its database record. Information in provider backups and operational logs is handled under the applicable retention settings, policies, and legal requirements. This policy does not specify a fixed backup-expiry period.

Your choices and deletion

You can edit your profile in the app. A profile photo is optional. You can manage notification permissions in iOS settings, block another player, and report a concern from a player's profile.

You can delete your account through Profile → Delete account. Deletion removes your account and associated active application records through the app's deletion process, including your profile photo, hosted games, requests, invitations, saved games, notifications, push registrations, and reports or block relationships associated with your account.

Account deletion does not automatically erase separate support correspondence. That correspondence, and any remaining backup or operational-log information, is handled under the retention approach above. Contact support if you need help deleting information or withdrawing optional processing; you can also turn off push notifications in iOS settings.

For questions about access, correction, deletion, or other privacy rights that apply where you live, contact hello@twentytrendsstudio.com.

Changes and contact

The Spare Tile may update this policy as the service changes. The published policy will show its effective date.

Twentytrends LLC hello@twentytrendsstudio.com