Privacy Policy

What stays on your device

Your supplement stack, your medication list, your intake history, your daily check-ins and anything read from Apple Health are stored locally on your iPhone and are never transmitted to us or anyone else. We cannot see them. If you delete the app, that data is gone.

Apple Health

If you connect Apple Health, Stackwise reads sleep, workouts, heart rate variability and resting heart rate. It never writes to Health. Health data is used only inside the app, to correlate what you take against how you recover. It is never used for advertising, never shared with third parties, never used for data mining, and never stored in iCloud. You can revoke access at any time in the Health app under Sharing → Apps.

The network requests the app makes

When you search for or scan a product, Stackwise queries the NIH Dietary Supplement Label Database, a public US government database. If a barcode is not recorded there, it asks Open Food Facts — a community-run open database — which product that barcode belongs to, so it can search the NIH database by name instead. Each request contains a search term or a barcode number and nothing that identifies you — no account, no device ID, no health information.

Product identification data from Open Food Facts, used under the Open Database License. Supplement label data from the NIH Office of Dietary Supplements.

Payments

Subscriptions are handled entirely by Apple. We never see your payment details. We receive only Apple's anonymous confirmation that a subscription is active.

This website

The interaction checker on this site runs entirely in your browser. The supplements and medications you select are never sent to a server.

Children

Stackwise is not directed at children under 13 and we do not knowingly collect information from them.

Changes and contact

If this policy changes materially we will note it in the app. Questions: info@stackwiseapp.net.