Privacy Policy

Effective August 7, 2026

Tenfold is a card game. It is designed to work without accounts, sign-ups, or tracking. This policy describes the little information the game does handle, and what happens to it.

Information the game handles

• Display name. The name you type on the home screen is shown to the other players in your game. It can be anything — it does not need to identify you, and we suggest it doesn't.
• Game state. While you play online, our server holds the state of your game (cards, scores, turns) and a random session token that lets you rejoin if you disconnect. Game data is deleted automatically when the game ends or is abandoned — typically within minutes, at most a few hours.
• Notifications, if you allow them. When you join an online game the app asks whether it may send notifications. If you agree, your device gives us a push token — an address for that one app on that one device — so we can tell you when it's your turn while you're away from the app. It is stored with the game you're in and deleted with it, on the same schedule as everything else above. It is not an advertising identifier, is never linked to a name, and is not used to recognise you across games. If you decline, everything works exactly as before; the only difference is that a turn you leave unattended passes to the computer sooner.
• Connection data. Like every internet service, our hosting provider (Fly.io) processes your IP address to deliver the connection, and it may appear briefly in routine server logs. Our server also keeps bounded, in-memory IP-based counters to limit abuse. We do not use this information to identify or profile you.
• On your device. The app stores your display name, preferences, and your latest unfinished solo game locally. During online play it also stores a room code and session token so you can resume. Solo progress stays on your device and is replaced when you start a new solo game or cleared when you finish it. Deleting the app deletes these local records.
• Feedback you send. If you use the in-app "Send feedback" form, we store the message you write (plus the display name and app version, to make sense of it). It's used only to improve the game. We keep it for as long as it's useful for that, and you can ask us to delete yours at any time — see Deleting your data.

Crash and performance reports

If the app crashes or misbehaves, a diagnostic report may be sent to Sentry, our error monitoring service. These reports contain technical details (device model, operating system version, how the app was performing and what it was doing at the time) and a random installation identifier that Sentry generates so repeated reports from the same install can be grouped together. That identifier is not tied to your name, is not an advertising identifier, and is not used to follow you across other apps or websites. Reports are used only to find and fix bugs, and are retained by Sentry for 90 days.

What we don't do

• No accounts, emails, or phone numbers.
• No advertising, ad identifiers, or cross-app tracking.
• No analytics profiles; no sale or sharing of data with anyone.
• No precise location, contacts, photos, or microphone access.

Deleting your data

There are no accounts, so there is nothing to close. Game data — including any push token — deletes itself when the room ends, and the display name, saved solo game, preferences, room code and session token go when you delete the app. You can also turn notifications off at any time in your device's settings. The only thing that persists on our side is feedback you chose to send — email us at the address below and we'll delete it. Crash and performance reports age out of Sentry automatically after 90 days.

Children

Tenfold is suitable for general audiences and collects no personal information from anyone, including children. Display names are free-text; players should not enter real names or personal details.

Changes

If this policy changes, the new version will be posted at this address with an updated effective date.

Contact

Questions? Email support@tenfold.cards.