LEGAL
Last updated: August 2026
Simmer Sleep ("Simmer", "we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains what information we collect, how we use it, and your rights regarding your data.
Simmer Sleep is operated by Zenworks, based in the Netherlands.
Contact: privacy@simmer.now
You can manage or permanently delete your SIMMER account directly within the app. For complete instructions, visit our account deletion page.
Account information: When you create a Simmer account, we collect your email address and account credentials to authenticate you and deliver the service.
Health and sleep data: With your explicit permission, Simmer reads sleep data from Apple Health (iOS) and Google Health Connect (Android). This includes:
This data is used exclusively to provide SIMMER's sleep tracking, Sleep Journal, sleep insights, personalised recommendations, and other sleep-related features within the app.
Simmer compares sleep outcomes with the stories, soundscapes, and rituals used the night before. Over time, this allows Simmer to identify which content and routines appear to be associated with better sleep and provide more relevant recommendations.
Health and sleep data is never sold, shared with advertisers, or used for advertising purposes. It is used exclusively to provide SIMMER's sleep tracking, sleep insights, personalised recommendations, and related in-app features.
Usage data: We collect limited usage analytics — for example, which content types are played and how rituals are configured — to improve the reliability, usability, and performance of SIMMER. This information is never used for advertising and is not sold to third parties.
Device tokens: If you enable bedtime reminders, we store a device notification token to deliver those reminders. This token is used only to send the reminders you have requested.
Subscription data: If you subscribe to Simmer Plus, your purchase is processed by Apple App Store or Google Play. We receive confirmation of your subscription status but never receive or store your payment card details.
Home automation:When you activate a scene through a supported home automation platform (such as Apple Home), the command is executed locally on your device through the platform's native framework. SIMMER does not receive, collect, store, or upload any information about your home configuration — including room names, accessory names, scenes, or automation definitions. Home automation in SIMMER operates entirely locally on your device.
We use your information to:
We do not sell personal information or health data.
We do not use health data for advertising, marketing, profiling unrelated to sleep improvement, or any purpose outside Simmer's sleep features.
Under the GDPR we rely on different grounds depending on what the data is used for:
Simmer accesses health and sleep data only after you grant explicit permission through Apple Health (iOS) or Google Health Connect (Android).
You may revoke these permissions at any time through your device's health settings.
Revoking access prevents Simmer from importing new health data but does not automatically delete health data previously stored in your account. Previously stored data may be deleted at any time — see our account deletion page for full instructions.
To provide sleep history, sleep insights, and personalised recommendations, Simmer securely stores health and sleep data associated with your account. This allows you to review historical trends, track long-term sleep patterns, and maintain continuity across devices.
Simmer does not sell, license, share, or transfer health data to advertisers, data brokers, or other third parties, and never uses it for advertising purposes.
Sleep Together lets you share a listening session with one other person. Sharing is always explicit: nothing is shared automatically, and simply opening the app or playing something never notifies anyone.
When you pair with a partner and start a shared session, that person can see your display name, what is currently playing, and whether you are present in the session. They cannot see your email address, your sleep data, your Sleep Archive, your subscription status, or anything else in your account.
Either of you can end the pairing at any time, from the Sleep Partner screen. Ending it — or signing out, or deleting your account — stops all future sharing immediately and removes your name from your former partner's device.
We retain your account and associated data for as long as your account remains active. Your Sleep Archive belongs to you — SIMMER holds it in trust, not ownership.
You may permanently delete your SIMMER account and your SIMMER Sleep Archive at any time. Our dedicated account deletion page is the canonical source for full instructions, including how to delete directly inside the app, how to submit a deletion request by email, and what data is and is not removed.
All associated personal data, sleep data, preferences, and usage history will be permanently removed. We aim to complete deletion requests within 30 days, or sooner where possible, in accordance with applicable law. Once deleted, data cannot be recovered.
You may also request deletion of specific data categories — such as your sleep history — without deleting your entire SIMMER account. Contact privacy@simmer.now to make this request.
Some data is removed automatically, without you needing to ask:
Where data has been combined into overall statistics that no longer identify anyone, those combined statistics cannot be separated back out and are not removed by a deletion request.
We apply technical and organisational measures to protect your personal and health data. These include encryption in transit (TLS), encryption at rest by our cloud infrastructure where applicable, access controls restricting data to systems and personnel necessary to operate the service, and regular security reviews.
Simmer uses the following third-party services:
Each third party processes data according to their own privacy policies. We do not permit these services to use your data for their own advertising purposes.
Your account, your Sleep Journal, and the content you create are stored in the European Union (Google Cloud, Netherlands region).
Some processing takes place in the United States. This includes parts of our server-side infrastructure, and services provided by Google, Apple, RevenueCat, Resend, Upstash, Cloudflare and Vercel.
These transfers rely on the EU–US Data Privacy Framework, an adequacy decision adopted by the European Commission, under which our providers are certified. Where a provider is not covered by that framework, or if it ceases to apply, transfers are made under the European Commission's Standard Contractual Clauses, which our agreements with these providers already incorporate.
You may request a copy of the safeguards we rely on by contacting privacy@simmer.now.
Simmer is intended for users aged 16 years and older. We do not knowingly collect personal information from individuals under the age of 16.
If you believe that someone under the age of 16 has provided personal information through Simmer, please contact privacy@simmer.now. We will investigate the report and, where appropriate, delete the information promptly in accordance with applicable law.
Depending on your location, you may have the right to:
To exercise any of these rights, contact privacy@simmer.now. We will respond within 30 days. To delete your SIMMER account specifically, see our dedicated account deletion page.
We may update this Privacy Policy from time to time. We will notify you of material changes through the app or by email. The date at the top of this page reflects when the policy was last updated.
Simmer Sleep is operated by Zenworks, based in the Netherlands.
For privacy questions or requests:
Email: privacy@simmer.now
Support: support@simmer.now