Privacy Policy

What we collect

Conversation content. What you type or say to Zen is sent to our server to generate a response, and to our voice provider if you have spoken replies turned on.

Creating an account is optional -- you can use Zen fully without one. If you don’t sign in, your conversation is saved locally in your browser (on your device only) so it survives an accidental reload; it is never uploaded to us or anyone else for storage, and stays only on the device and browser you used. You can clear it anytime with the “New conversation” button, the delete icon next to any conversation, or by clearing your browser’s site data.

If you do create an account, we store your email address and a securely hashed password (we never see or store your password itself -- our authentication provider, Supabase, handles this). While signed in, your conversations are stored on our server (a Postgres database via Supabase) instead of only your device, so they sync across your devices.

Payment information.If you subscribe to a paid plan, payment is handled entirely by Stripe -- we never see or store your card details. We store which plan you’re on, your subscription status, and a Stripe-issued customer/subscription reference so we can keep your account in sync with your billing status.

Usage counts.If you’re signed in, we track how many messages you’ve sent today and how many voice characters you’ve used this month, purely to apply your plan’s limits. This is a count only -- it is separate from, and does not include, the content of your conversations.

Cookies. If you never create an account, Zen uses no cookies. If you do sign in, we use one essential cookie solely to keep you signed in -- not for tracking or advertising, and not shared with any third-party ad or analytics network.

Technical data. Our server temporarily processes your IP address to apply basic rate limiting (preventing abuse of the service). We do not log or store IP addresses beyond this short-lived use.

Anonymous usage analytics. We use privacy-friendly analytics (Vercel Analytics) to understand how the app is used in aggregate -- for example, page visits and whether a feature like voice mode or a particular language was used. This does not use cookies or track you across other sites, and is not tied to your identity or the content of your conversations.

Who we share it with

To generate a response, your message is sent to:

• Anthropic (which operates the Claude AI model that powers Zen’s responses)
• ElevenLabs (which converts text replies to spoken audio, only if you turn on voice mode)

If you create an account, we also use Supabase to handle authentication and to store your account and conversation data.

If you subscribe to a paid plan, we use Stripe to process payment and manage your subscription.

These providers process your message to return a response; we do not sell your data to anyone, and we do not use your conversations for advertising.

Age requirement

Zen is intended for users 18 years of age or older. It is not designed for children, and we do not knowingly collect information from anyone under 18.

Not a substitute for professional care

Zen is an AI coaching tool, not a therapist, doctor, or crisis service. It cannot diagnose conditions or provide emergency help. If you are in crisis, please contact a local emergency service or a crisis hotline directly -- see the notice in the app footer for examples.

Your choices

If you don’t have an account, there is no server-side data on our end to request or delete -- your locally-saved conversation can be cleared anytime via the “New conversation” button, the delete icon next to any conversation, or by clearing your browser’s site data. If you do have an account, contact us (below) to have it and its data deleted. You can turn voice mode off at any time to stop sending messages to our voice provider.

Changes to this policy

If we materially change how we handle your data (for example, introducing accounts or saved history), we will update this page and its “last updated” date, and where required, ask for your consent.

Contact

Questions about this policy: hello@helixaistudio.com