Your game stays on your device
The game works offline and does not require an account. Puzzle progress, notes, undo history and preferences are stored locally. The app does not include advertising or third-party analytics SDKs, and does not send gameplay records to a studio server.
Backups are your choice
Import and export are initiated by you through the system file picker. A backup contains game progress and settings. If you choose iCloud Drive or another storage provider, that provider handles the file under its own terms. Clearing app data does not remove copies you exported elsewhere.
When you contact us
If you email support, we receive your email address, message and any attachments you choose to send. We use them to answer your request and investigate the issue. Email is handled by our email provider, Google. Do not include passwords or other sensitive information. You can contact us to request deletion of support correspondence; necessary records may be retained where required by law.
TestFlight and Apple services
When you test through TestFlight, Apple automatically collects crash logs and usage information and shares them with the developer. This collection cannot be opted out of within TestFlight. Submitted feedback may also include your name, email address and device information. We use this information to investigate issues and improve the app, retain it only as needed for those purposes, and do not share it with third parties. Contact us with access or deletion requests. This is separate from local game progress.
This website
These pages do not use analytics scripts, advertising, cookies, browser storage, contact forms or third-party fonts. When the website is hosted, its hosting provider processes connection information such as your IP address and requested page to deliver it. Opening an external link or sending email uses the relevant provider’s services.
Changes and contact
We will update this page when relevant practices change. For privacy questions or requests, contact tosymmetry studio at yxiaohan@gmail.com. This policy describes the current version; future features may require changes.