Privacy Policy
Last updated November 9, 2026
Hush is a stress monitoring app for iPhone and Apple Watch, operated by OneClick Commerce LLC ("we"). This policy explains what we collect, why, and the choices you have.
The short version
- Most of your health data stays on your iPhone and Apple Watch.
- We never sell your data, and your health data is never used for advertising.
- If you allow tracking, we measure which of our ads brought you to Hush. That uses device, app activity and subscription information, never health data.
- Health data leaves your device only when you share with friends or choose to chat with Posy.
- You can delete your account and server data in the app at any time.
Health data from Apple Health
With your permission, Hush reads heart rate, heart rate variability, resting heart rate, respiratory rate, blood oxygen, sleep, steps, energy, distance, VO2 max, workouts, and menstrual flow from Apple Health. With your permission, it writes workouts, mindful minutes, water and caffeine back to Apple Health.
Hush uses this data on your device to calculate your stress score, Bio Age and insights. Your birth year and sex at birth, if you add them, stay on your device and are used only for Bio Age. We do not use Apple Health data for advertising or marketing, and we do not sell it or use it to build profiles for third parties.
Chatting with Posy
Posy is an AI. Before your first chat, Hush asks your permission. If you agree, your messages, first name, current stress score and what is driving it, HRV, resting heart rate, last night's sleep, cycle phase if you track it, recent check-ins and the answers you gave during setup are sent to our servers and to Anthropic, the AI company that provides Posy, so a reply can be written. Your conversation is stored on our servers so Posy can keep context. You can turn this off anytime in the app under Settings, Chat with Posy.
Friends and Circles
Hush asks your permission the first time you connect with a friend. If you agree, Hush stores the items you choose to share, such as your daily stress score, sleep and activity, so that friends can see them. You control each category and can pause all sharing in the app. Turning a category off erases what friends could see. Hush never shares cycle details with friends.
Account information
Hush creates an anonymous account the first time you chat with Posy or connect with a friend. We then store your display name, avatar choice and sharing settings. If you use Sign in with Apple, we receive an identifier from Apple and your email address or Apple's private relay address.
Subscriptions and analytics
Apple processes all payments, and we never see your payment details. We use Superwall to manage paywalls, which receives purchase events, device information and an app-specific user identifier.
Measuring our ads
We advertise Hush on Meta platforms such as Facebook and Instagram, and we use Appstack to learn which ad led to an install and how well our ads work. Hush asks your permission with Apple's tracking question after you tap Get started.
If you tap Allow, Appstack receives your device and network information (including IP address, device model, operating system, time zone and device identifiers), an identifier for this install, your Hush account identifier if you sign in with Apple, and activity such as installing the app, reaching the subscription screen and finishing setup. Superwall also sends Appstack your trial, subscription and renewal events, including price. If you tapped one of our ads, Appstack matches this information to that tap and shares those events with Meta, so Meta can report on and improve our ads.
If you decline, Appstack does not run on your device and nothing is matched to an ad. Superwall still sends Appstack your trial, subscription and renewal events with a random identifier created on your device, which lets us count total sales but cannot connect you to an ad. You can change your answer anytime in Settings, Privacy & Security, Tracking.
We never send Appstack or Meta your Apple Health data, stress scores, check-ins, cycle details, chat messages or the answers you gave during setup.
Who processes your data
- Supabase hosts our database and authentication.
- Anthropic generates Posy's replies, only if you allow it.
- Superwall manages paywalls and subscription analytics.
- Appstack measures which ads lead to installs and subscriptions.
- Apple provides Apple Health, Sign in with Apple and payments. Each of these providers handles your data only to deliver its service to us, and we require them to give it the same or equal protection as this policy.
Meta receives ad results as described above and handles them under its own privacy policy.
How long we keep it
We keep your account data until you delete your account. Deleting it in the app, under Settings, Delete my account, permanently removes your profile, friends, shared updates and chat history from our servers and, if you allowed tracking, asks Appstack to delete the data it holds for this install. Data in Apple Health stays there and is controlled by you.
Your rights
You can access, correct or delete your data, and depending on where you live you may have additional rights under laws such as the GDPR and CCPA. You can withdraw consent at any time: turn off Chat with Posy or friend sharing in Settings, remove Hush's access in the Health app, or delete your account. Email us to make any other request.
Children
Hush is for adults 18 and over. We do not knowingly collect data from anyone under 18.
Changes
If we change this policy, we will update this page and the date above.