Privacy Policy

Overview

Mellem is a meditation app for macOS that helps you find calm moments in your workday. We designed it with privacy at the core. Your meditation history stays on your device, we never record your audio, and we only collect what we need to run the service.

What we collect

Account information. When you sign in with Google or a magic link, we store your email address and a unique account identifier. This is held in our database (hosted by Supabase) and used to manage your account and subscription.

Subscription and billing. If you subscribe, payment is handled entirely by Stripe. We never see or store your card details. We do store your Stripe customer ID, subscription status, plan type, and billing period dates so the app knows whether your subscription is active.

That's it for cloud data. We do not collect analytics, behavioural data, usage telemetry, or any other tracking information.

What stays on your device

The following data is stored locally on your Mac and never sent to our servers:

Meditation sessions. Timestamps, durations, and mood selections from your meditations. This powers your weekly statistics.
Preferences. Voice choice, meditation duration, ambient sound, notification settings, and other configuration.
Google Calendar tokens. If you connect your calendar, the OAuth tokens are stored locally. Calendar event data is processed in memory for notification timing and is never stored or transmitted.

Google Calendar access

If you choose to connect your Google Calendar, Mellem requests read-only access to your calendar events. It uses this to:

Detect gaps between meetings where a meditation might fit
Know when a meeting ends so it can suggest a pause at the right moment
Show you context about your upcoming schedule

Calendar data is fetched periodically, processed locally in memory, and never stored permanently or sent to any third party. You can disconnect your calendar at any time from the account screen, which immediately deletes all stored tokens.

Microphone detection

Mellem can detect whether your microphone is currently in use. This is the same indicator macOS shows as the orange privacy dot in your menu bar. It uses this to know when you're on a call, so it doesn't interrupt you mid-meeting.

No audio is ever recorded, captured, or transmitted. The app only checks a binary active/inactive status from the macOS audio system. It requires a one-time microphone permission prompt from macOS, but this permission is used solely to query the microphone's in-use state.

Third-party services

Supabase hosts our authentication and database. Their infrastructure is hosted on AWS in the EU. Supabase privacy policy.
Stripe handles all payment processing. They are PCI DSS Level 1 certified. Stripe privacy policy.
Google provides OAuth sign-in and calendar access. Google privacy policy.

We do not use any analytics, advertising, or tracking services.

Data retention

Your account data (email, subscription status) is retained for as long as you have an account. If you sign out, your local session is cleared immediately. Local data (meditation history, preferences) remains on your device until you delete the app or its data.

Your rights

You can:

Disconnect your Google Calendar at any time, which deletes all stored tokens
Sign out, which clears your local session data
Request deletion of your account and all associated data by contacting us at hello@mellem.ai
Export your data by contacting us at the same address

If you're in the EU or UK, you have additional rights under GDPR including the right to access, rectify, and erase your personal data. Contact us to exercise these rights.

Children

Mellem is not directed at children under 16. We do not knowingly collect personal data from children.

Changes to this policy

We may update this policy from time to time. If we make significant changes, we'll let you know through the app or by email. The date at the top of this page always reflects the latest version.

Contact

Questions about this policy? Reach us at hello@mellem.ai.