PopZen

PopZen is a stress-relief bubble-popping and mindfulness breathing app. It is described as suitable for all ages, including children, and it is intended for entertainment and relaxation rather than medical use.

The app stores data locally on the device using SwiftData. That local data includes session records with bubble-pop counts and durations, mood records from before and after sessions, achievement progress, and preferences such as haptic intensity, sound volume, and a voice guidance toggle. PopZen also provides a My Data section for viewing stored information, a Reset All Data option in Settings, and removal of local data when the app is uninstalled.

Its privacy policy states that PopZen does not collect, transmit, or upload personal information to its servers, runs entirely on the device, and uses no accounts, cloud services, tracking, analytics tools, advertising SDKs, social sharing features, or user tracking. The app is protected by iOS system security mechanisms, and the policy recommends using a device passcode or Face ID/Touch ID and backing up the device regularly. The policy also says PopZen is GDPR compliant and COPPA compliant, and notes that updates to the policy are delivered through in-app notifications when the app is updated.

PopZen is offered as a one-time purchase and is presented as having no ads. The policy lists a contact path through Settings, About, and Contact Us for privacy questions.