# Privacy Policy — Radiology Cannon
**Last updated:** May 26, 2026
Radiology Cannon (“the app”) is a free single-player and Game Center game published by Mark Jones. This policy explains, plainly, what the app does and does not do with your information.
## TL;DR
– I do not collect, store, or transmit any personal data from you.
– The app has no analytics, no advertising, no tracking SDKs, no in-app purchases, and no third-party data sharing.
– Optional: if you sign in to Apple Game Center, scores you achieve are submitted to Apple’s Game Center service so they can appear on the leaderboard. That part is governed by Apple’s policies, not mine.
## What the app stores
– **Your personal-best score** is saved locally on your device using `UserDefaults`. It never leaves your device unless you have signed in to Game Center.
– **Your gameplay preferences** (haptics on/off, sound on/off) are saved locally on your device. There is no remote account, no login, and no server operated by me.
## Game Center (optional)
If you choose to sign in to Apple Game Center inside the app:
– Your scores are submitted to Apple’s Game Center service so they can appear on the global “all-time” leaderboard and the recurring “weekly” leaderboard.
– Apple associates submitted scores with the Game Center display name that you control in iOS Settings. I receive no additional information about you.
– All Game Center features are operated by Apple under Apple’s Privacy Policy: https://www.apple.com/legal/privacy
You can play the entire game without signing in to Game Center. Refusing sign-in disables only the leaderboard features.
## What I do not do
– I do not collect device identifiers (IDFA, IDFV, advertising IDs, vendor IDs, etc.).
– I do not use analytics SDKs (Firebase, Mixpanel, Amplitude, etc.).
– I do not use advertising SDKs.
– I do not use third-party crash reporters.
– I do not have a server that the app contacts.
– I do not sell, rent, or share any data, because I do not have any.
## Children
The app is rated for all ages and does not knowingly collect data from anyone, including children under 13.
## Changes to this policy
If this policy ever changes, the new version will be posted here with an updated “Last updated” date. Material changes will also be reflected in the in-app privacy policy in the next app update.
## Contact
Privacy questions or concerns: [email protected]
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© 2026 Mark Jones. All rights reserved.