Completed levels, the last level, the current board, undo history, sound and language preferences are stored locally by the app.

Updating the same app preserves these records. Deleting the app may remove them. An app update is not a backup to another device.

Levels, the mechanism guide and sound effects are included in the app. They do not require a developer account or online game service.

The app uses no advertising, analytics or cross-app tracking services and does not upload game saves to a developer server. Whether system backups include app data depends on your device and Apple account settings.

If you email support@codeverything.cn, we receive the information you choose to send so we can help with your issue.

Include the app version, level and a short description. Remove unrelated personal information from screenshots, and do not send passwords or verification codes. To ask about or request deletion of support information you sent, contact the same address.

The product website is static. It has no game account sign-in or game-save upload feature.

The hosting service may process technical information such as IP addresses and request paths for delivery and security. These statements do not mean server access logs do not exist.

Codeverything maintains these product and support pages. This policy will be updated if the product data flow changes.

Privacy and support: support@codeverything.cn.