Privacy Policy
Effective September 5, 2026
Sharp Sparrow is an American Mahjong app made by Holland Lane LLC. This page explains, in plain language, what information we handle when you use the app or this website, why we handle it, and the choices you have. The short version: we collect what we need to run the game, we don't show ads, and we don't sell your information.
What we collect
Your account. When you sign up we collect your name and email address (or the private relay address Apple provides if you use Sign in with Apple and choose to hide your email). Sign-in is handled by our authentication provider.
Your games. We store the games you play — who's at the table, tiles, moves, and results — so your matches can continue across days and devices. That's the heart of the product: mahjong a few turns at a time.
Notifications. If you turn on notifications, we store a device push token so we can tell you when it's your turn.
Usage information. We use an analytics service to understand how the app and website are used — things like which screens are visited and where people get stuck — so we can make Sharp Sparrow better. This is tied to your account, not shared with advertisers.
Waitlist. If you join the waitlist on this website, we store the email address you give us and use it only to tell you about Sharp Sparrow.
What other players can see
Mahjong is a game you play with people. Players at your table see your display name and your visible game actions — discards, exposed tiles, and results — the same things they'd see at a real table. They don't see your email address, your concealed rack, or your saved cards.
What we don't do
We don't sell or rent your personal information. We don't show ads or share your data with ad networks.
Who helps us run Sharp Sparrow
Like most small teams, we rely on a few trusted service providers to operate: sign-in, game hosting, image storage, app updates and push notifications, usage analytics, and website hosting. Each provider receives only what it needs to do its job, and none of them may use your information for their own purposes. We're happy to share the current list of providers if you email us.
Your choices
You can turn notifications off at any time in your device settings. You can delete your account right in the app (Profile → Delete account); that permanently removes your account and profile, while finished games keep an anonymous record so your former tablemates' histories still make sense. You can also email us to request deletion or a copy of your data.
How long we keep things
We keep your information while your account is active. When you delete your account (in the app or by email), we remove your account and profile; finished games keep an anonymous record so your former tablemates' histories still make sense. Waitlist emails are kept until you ask off the list.
For players outside the United States
Holland Lane LLC, a U.S. company, is the data controller for Sharp Sparrow, and your information is processed in the United States. Where safeguards for international transfers are required, we rely on our providers' standard contractual protections. We process your information to provide the service you signed up for (your account and games), for our legitimate interests in keeping Sharp Sparrow working, safe, and improving (analytics, security), and with your consent where the law requires it (like notifications). If you're in the EEA, the UK, or a place with similar laws, you have the right to access, correct, delete, restrict, or receive a copy of your personal data, to object to certain processing, and to complain to your local data protection authority. Email us and we'll honor these rights.
Children
Sharp Sparrow is not directed at children under 13 — or the higher minimum age your country may set for services like ours — and we don't knowingly collect information from them.
Changes
If we change this policy, we'll update this page and the date at the top. Meaningful changes will be called out in the app.
Contact
Questions, requests, or concerns: support@sharpsparrow.com.
Sharp Sparrow is made by Holland Lane LLC.