Lychi AB is the controller for RosaCue.
What we collect
Everything you log — daily severity, symptoms, triggers, flares, notes, products, treatment events, and photos — is stored only on your device (AsyncStorage and the app Documents directory). There is no user account, no email, and no advertising identifier.
What leaves the device
Nothing you log is sent to a server. Raw logs, notes, photos, and derived insight statistics stay on the device.
Photos
Photos stay in the app’s private Documents storage. They are not added to your camera roll and are not uploaded. A flare close-up is stored separately from the day’s reference photo.
Export and delete
You can export a CSV of your logs from Settings at any time (photo filenames are included; image bytes are not packaged in the MVP export). You can delete all data on the device; that wipe is permanent on this phone.
Backup
There is no cloud sync. Whether iCloud backup includes AsyncStorage and the photos directory has not been verified on every iOS version — treat Export my data as the intentional backup path.
Not a medical device
This app does not diagnose, treat, or prevent any condition. Patterns it shows are associations in your own log, not proof of cause. Decisions about treatment belong with a qualified clinician.
Contact
Privacy questions can be sent to hello@lychi.se.