1. Overview

The App does not collect, store, or share personal information. All features operate on-device.

2. On‑Device Processing and Storage

All app data, including your focus history, preferences, and selected pets, is stored locally on your device. These data are not sent to our servers.

3. Contacting Support

If you contact us by email, your email address and message content are used solely to respond to your inquiry and are not shared with third parties.

Contact: support@ystk.app

4. Sharing and Disclosure

We do not sell, share, or disclose personal information to third parties.

5. Children's Privacy

The App does not knowingly collect personal information from children.

6. Changes to This Policy

We may update this policy to reflect changes in law or App functionality. Material changes will be announced on this page.

Owner/Operator: Yuhei Yasutake

Last updated: June 24, 2026