Privacy Policy

Last updated 25 August 2026

MarbleCraft lets you build marble tracks, play them, and share them with the world. This page describes what the app collects, why, and how you can manage your data.

1. What We Collect

• Account Information — When you sign in with Google or Apple, we store the unique account identifier and email address provided by those authentication services. We never see or store your password.
• Your Nickname — Chosen by you, displayed publicly next to your published maps and leaderboard records.
• Maps You Publish — The track layout, title, and generated preview thumbnail. These are public to all players.
• Play Records & Leaderboards — Your best completion times on each track, displayed publicly on global leaderboards.
• Ratings, Reports & Blocklists — Star ratings you give, violation reports you submit, and creators you choose to block.

We do not collect your contacts, photos, microphone, exact location, or local files. There are no third-party analytics trackers embedded in the app.

2. Advertising

MarbleCraft displays advertisements through Google AdMob. AdMob may use device advertising identifiers (ADID/IDFA) to serve relevant ads and measure performance, governed by Google's Privacy Policy.

On iOS, you can opt out via the App Tracking Transparency prompt. On Android, you can reset or delete your Advertising ID in device system settings.

3. Data Storage & Security

All data is securely stored and processed on Cloudflare global infrastructure (D1 database and R2 object storage).

4. Deleting Your Account

You can permanently delete your account and all associated data at any time directly in the app under Profile → Delete account. This immediately removes your account record, published maps, files, ratings, and leaderboard times.

If you cannot access the app, you may email us at jd00556@naver.com from your registered email address and we will process the deletion for you.

5. Children's Privacy

MarbleCraft is not directed at children under the age of 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please contact us and we will promptly delete it.

6. Contact Us

For any privacy questions or requests, please contact us at:
Email: jd00556@naver.com