STACKLEAF™ Privacy Policy

Last updated: September 16, 2026 · Publisher: Cyaniz Labs, LLC

Study library — health & wellness reference. STACKLEAF™ shows sourced herbal teaching cards as attributed stacks. It is not a diagnosis, prescription, medical device, or substitute for emergency care. Study library only.

Information we collect

v1 is designed to collect nothing by default. Situations and cards ship on-device as static content. Optional later: email only if an account gate is added — not required for core free situations. We do not sell health data (including ailment browsing or card views).

How we use it

Any data you enter (if ever) is used only to operate STACKLEAF™ for you. Library unlock state may be stored on-device (for example local storage or Play Billing purchase status). We do not sell your personal information.

Third parties

If you buy Library access (subscription or lifetime), payment is processed by Google Play Billing. Google handles payment details; Cyaniz Labs, LLC receives purchase status needed to unlock Library features, not your full card number. This build does not include advertising or analytics SDKs on this privacy page.

Children

STACKLEAF™ is not directed at children under 13. Pediatric study cards (when present) are attributed teacher notes with hard stops and are not a collection of children’s personal data.

Medical disclaimer

Study library. Not a diagnosis or prescription. Not a substitute for emergency care. Never invent doses; never merge teachers into one proprietary blend as medical advice.

Changes

If this policy changes, we will update the date at the top of this page.

Contact

Questions or deletion requests: cyanizlabs@gmail.com.