Linestone Privacy Policy

Last updated 1 November 2026. Covers the Linestone app on iPhone, iPad and Android. Linestone was called Blocktide until October 2026, and on iPhone it still shows that name until its next update.

What is collected

Gameplay analytics (Google Firebase Analytics). Anonymous events about how the game is used, such as games started and finished, scores, whether the tutorial was completed and which buttons were pressed. They carry a random identifier for the app install, not your identity.

Crash reports (Google Firebase Crashlytics). If the game crashes, or something goes wrong that it recovers from (a sync with friends that fails, music that won't load), a report is sent so we can fix it. It holds the error, your device model and OS version, the screen, mode and level you were on, and the game's recent analytics events (the same anonymous events described above).

Leaderboards and achievements (Apple Game Center, Google Play Games). If you're signed in to Game Center on iOS or Google Play Games on Android, your scores and achievements are sent to Apple or Google under your player profile so they can appear on leaderboards. That profile, meaning your player ID and the name you chose, belongs to your Apple or Google account and is covered by their privacy policies. Linestone never receives your email address or account details. Our analytics only record whether signing in, sending a score or unlocking an achievement worked, not who you are. Signing in is optional. The game works fully without it, and you can sign out in Game Center settings on iOS or in the Google Play Games app on Android.

Challenges. When you challenge a friend, the game makes a link holding the game's starting number, the mode, your score and how it grew as you played (so your friend can race it), a random number made by the app so your friend's game can keep your head-to-head record apart from other friends', and, if you typed one, your name. The random number is not linked to you, your account or your device. The link goes only where you send it, and is not stored by us. Our website reads it in the browser to show the challenge; its analytics record that a challenge page was opened, not the link. The game's analytics count challenges sent and played, never the name. Results against friends are kept on your device. You can change or clear the name in Settings.

Playing friends. When you send or open a challenge, the game signs you in to an anonymous account on Google Firebase, which we use as our server. It has no email, phone number or password, only a random ID made by Firebase. So friends can keep playing each other without sending links, the server keeps: the name you chose, if any, and the app's random player number; which friends you are connected with (two players are connected when one opens the other's challenge); and the games between you, meaning the mode, the game's starting number, each side's score, how the sender's score grew, and when they were played. Only you and that friend can see a game between you, and nobody can look you up. On Android, if you allow notifications, the server also keeps this phone's notification address (a token from Google's messaging service) and the app's language, so it can tell you when a friend sends you a game, passes your score or finishes your game; no app can read it. Settings → Delete my online account (Delete my friends data in older versions) removes all of it from the server, along with the account. The game itself plays fully offline; the account exists only for playing friends. Google stores it in the United States.

Reporting a problem. Settings → Report a problem opens an email in your own email app, addressed to us, with your app version, OS version, the app's random player number and the level and starting number of any game in progress. Nothing is sent unless you send that email yourself, and you can read and change all of it first. We use it only to look into your problem and reply.

Advertising (Android only). On Android you can choose to watch a short video ad for an extra power-up. Ads only play when you ask for one. They are served by Google AdMob, which uses your device's advertising ID, an approximate location worked out from your IP address, and device and ad-interaction data to show and measure ads and to prevent fraud. In the EU, UK and Switzerland you are asked for consent first. You can reset or delete your advertising ID in Android's settings. Our analytics never collect it. Linestone on iPhone and iPad has no ads and no advertising SDK, and never asks to track you.

What is not collected

No name other than the optional one you show friends, and no email address (unless you email us), phone number, contacts, photos, precise location or health data. You can play the whole game offline.

Children

Linestone is not directed at children under 13, and we don't knowingly collect data from them.

Your choices

• Deleting the app deletes every score, streak and setting stored on your device.
• If you have played friends, Settings → Delete my online account deletes your anonymous account and everything about you on our server. Deleting the app alone doesn't, so do that first, or email us.
• Settings → Reset all progress clears the same data without uninstalling.

Third parties

Google Firebase and Google Play Games, Google AdMob on Android, and Apple Game Center on iOS. See Apple's and Google's privacy policies.

What the app stores show

Changes

If this policy changes, we'll post the new version on this page with a new date.

Contact

Questions about this policy: hello@playpenstudios.in, or see support. The terms of use cover everything else about playing Linestone.