Privacy Policy

Summary

• No account, email, or social login is required.
• A nickname is required before a game starts. That nickname is the public name on the leaderboards.
• The phone keeps an install id, the nickname, sound and haptics settings, a Math Cross board in progress, and the last leaderboard it loaded.
• Each game played is stored on our server: install id, nickname, game, UTC day, start and finish times, duration, wrong-answer count, and whether the player finished or left. The server times the game itself instead of trusting the phone. The puzzles and answers stay on the server; the phone receives a puzzle only after that day’s attempt has started.
• Daily boards keep each player’s time in each game for that UTC day. All-time boards keep each player’s fastest time in each game.
• We do not sell this information. We do not ask for your name, contacts, or location for the leaderboards. Nicknames are 3–16 letters or numbers. Don’t use your real name if you don’t want it on the board.
• On iPhone the app signs in to Game Center. On Android it can sign in to Google Play Games once that project id is set. Friends can see that you’re playing. Scores are not posted to either service. Declining sign-in does not block play.
• A finished game can show one full-screen ad from Google AdMob. The ad is rated G and requested as non-personalized. The ad request does not include the nickname or the score. The app does not ask for tracking permission. Leaving a game does not show an ad.
• AdMob can still receive an IP address, a device advertising identifier, ad interactions, and diagnostics, and it may use the device identifier for advertising. Non-personalized ads do not make that “data not collected.”
• Premium is a one-time in-app purchase sold by Apple or Google. The store handles the payment. We do not receive a card number, and we do not send the receipt to the score server. Premium turns ads off and opens past days in the Archive. Restore is in Settings.
• Email to contact@stealthlaunch.com includes your address and the message, so we can reply.
• Visits to stealthlaunch.com may be recorded in ordinary host logs (IP address, browser, pages). We do not add a marketing pixel on these pages.