Privacy Policy

Stacksy helps you organize a personal peptide protocol. This policy explains what we collect, why, and the choices you have. Stacksy is intended for adults (18+).

We keep data collection to the minimum needed to run the app. Most of what you create stays on your phone.

Account information

To create an account we collect your email address, a password, and the display name you enter at sign-up. Your password is stored only in hashed form by our authentication provider; we never see it. Your display name is stored with your account so we can greet you. We also store your account's referral code, and a referral code you enter at sign-up if you were invited by someone.

Data you create in the app

Your stacks, the compounds you add and their settings, your dose logs, saved calculator results, your goal, and reminder preferences are stored only on your device. This information is not uploaded to our servers.

What we do not collect

Stacksy contains no analytics or advertising SDKs, and we do not track you across other companies' apps or websites. We do not collect your location, contacts, or device identifiers for advertising.

We use your email and password to create and secure your account and to sign you in. We send transactional emails — a verification code at sign-up and a code if you reset your password. Referral codes are used only to attribute invites.

We do not sell your data, share it with advertisers or data brokers, or use it to train AI models. There are no ads in Stacksy.

We rely on a small number of providers who process data on our behalf:

• Supabase — hosts authentication and the database that stores your account email, display name, and referral codes.

• Resend — delivers our verification and password-reset emails (receives your email address to send them).

• RevenueCat — manages subscription purchases. It receives a random app-specific ID and your App Store purchase status so we can unlock premium features. It does not receive your email, name, or any health data.

• Apple — processes subscription payments and distributes the app through the App Store.

These providers may store data on servers outside your country. We only share what each provider needs to perform its function.

You can delete your account at any time from the Profile screen. This permanently removes your account and its data (including your email and referral codes) from our authentication provider and database.

Data stored on your device — your stacks, dose logs, and saved calculations — is removed when you delete it in the app or uninstall Stacksy. Because that data lives only on your phone, uninstalling without exporting will erase it.

Account data is protected in transit and at rest by our providers, and passwords are hashed. On-device data is stored in your device's app storage. No system is perfectly secure, so please keep your device and login credentials protected.

Stacksy is not intended for anyone under 18 and we do not knowingly collect information from children. If you believe a minor has created an account, contact us and we will remove it.

If we make a meaningful change to this policy we will update the date above and, where appropriate, notify you in the app. Continuing to use Stacksy after a change means you accept the updated policy.

Questions about privacy? Email us at support@joinstacksy.com.