Privacy Policy

Last updated: May 2026

ByteCube, developed by Bytecove Software ("we," "our," or "us"), is a 3D take on the 2048 merge puzzle, available to play free in your web browser and as an iPhone app. We care about your privacy and keep the data we handle to a minimum. This policy explains what is collected and why.

Information stored on your device

By default, ByteCube keeps your data locally — there is no account to create.

• Best scores & progress: your high scores per cube size, levels unlocked, and "times beaten" are stored on your device (in browser local storage on the web, and in app storage on iPhone).
• Daily streak: your daily-challenge completion history and current streak.
• Settings: preferences such as sound, reduced motion, and see-through tiles.

Information sent to the leaderboard

The worldwide leaderboard is optional. Information is sent to our leaderboard server only when you choose to post a score:

• A display name you choose yourself (you are never required to use your real name);
• Your score, the cube size, and the day it was played;
• A random per-device identifier so your own entries can be updated and kept unique.

This data is used solely to display the leaderboard (an app-functionality purpose). It is not used for advertising or cross-app tracking, and it is not linked to your real-world identity.

Advertising (iPhone app)

The iPhone app shows ads through Google AdMob unless you remove ads (see below). AdMob may process device identifiers, approximate location derived from IP address, and ad-interaction data to serve and measure ads. In the EEA and UK we present Google's consent (UMP) form, and on iOS we request permission through Apple's App Tracking Transparency prompt before any tracking occurs. The free browser demo does not show AdMob ads.

• See Google's Privacy Policy and Google's Advertising policies.

Sign in with Apple (optional)

On iPhone you may optionally use Sign in with Apple. It provides a user identifier and the name you choose to share, used only to attribute your leaderboard entries. We do not receive your password, and you can use a private relay email.

Remove Ads subscription

The optional Remove Ads subscription is processed by Apple through StoreKit. We verify your subscription status through Apple to grant the ad-free benefit; we never see or store your payment details. A 7-day daily-challenge streak also grants 7 days ad-free at no cost.

Data retention & your choices

• On-device data persists until you clear your browser data or delete the app.
• You may play entirely offline and never post to the leaderboard, in which case no data leaves your device.
• In the iPhone app you can permanently delete your account and all of your leaderboard data (display name, scores, and any medals) at any time from Settings → Account → Delete Account. You can also report or block other players' names.
• To remove a leaderboard entry or ask what is stored for your device identifier, contact us below.
• You can change ad-tracking permission anytime in iOS Settings → Privacy & Security → Tracking.

Children's privacy

ByteCube is rated for ages 4+ and is not directed at children under 13 for data-collection purposes. The iPhone app may display ads via AdMob as described above. We do not knowingly collect personal information from children under 13.

Changes to this policy

We may update this policy from time to time. Changes are posted on this page with a new "Last updated" date.