Support

Support

Check our Terms and Privacy Policy, browse FAQs, and reach out — all in one place. You can also share ideas anonymously on the community board.

Terms of Service

Well Rhythm is a self-care app and is not intended for medical diagnosis or treatment (its predictions and tips are for reference only). Your health, cycle, basal body temperature, and diary data are encrypted and stored on your device — never sent to our servers. Sharing happens only when you explicitly turn it on, relaying an encrypted "overview" only. Billing, cancellation, and refunds follow the App Store / Google Play store terms. The minimum age is 13 (under 18 requires a guardian's consent). Governing law is Japanese law.

Last Updated: 2026-06-15 / Effective: 2026-06-30 / Version 1.0

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Privacy Policy

We put first your ability to entrust your most sensitive information with peace of mind. Your sensitive data — body condition, cycle, basal body temperature, diary — is encrypted and stored on your device, and our servers never read or store it. Our servers only handle contact details like your email, your subscription status, and encrypted shared data. Health integrations and ads are optional and can be turned off, and you can delete all your data anytime.

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Frequently Asked Questions
QIs it free to use?
Yes. Every feature except AI — logging, daily message, correlation analysis, calendar, widgets, smartwatch, and partner sharing — is free. Premium (paid) adds AI features and removes ads, and the Family plan can extend Premium to your partner too.
QIs my health data safe?
Yes. Health data is encrypted and stored on your device only — our servers cannot read it. Partner sharing is limited to an encrypted "overview" message. You can delete all data at any time.
QDo I have to track my period?
Not at all. Period tracking is entirely optional — you can leave it off and still enjoy the barometric pressure & weather log and the daily message.
QCan I transfer data to a new phone?
Yes. If you create an optional account, you can carry your data across a same-OS device change or an iOS↔Android move (a migration passphrase is used for encryption). Health data isn't linked to your account and stays encrypted on your device.
QWhich devices are supported?
Both iOS and Android are supported. Home screen widgets and Apple Watch / Wear OS are supported too.
QAre AI features available?
AI features — such as gently rephrasing the daily message and AI search in your diary — run on your device (offline). iOS is supported today. On Android, we'll roll them out as Google's on-device AI support expands (templates are used until then).
QCan I connect to health apps?
On iOS you can sync with Apple Health to import basal temperature and period records. On Android, Health Connect integration is not yet supported (you can log everything in the app, and all other features work as usual). You can turn the connection off anytime.
QCan I use it for medical diagnosis?
No. Well Rhythm is a self-care app and is not intended for diagnosis, treatment, or prevention (it is not a medical device). Use predictions and the daily message as a gentle guide, and consult a medical professional if you feel unwell.
Contact & Feedback

Feedback, feature requests, and bug reports can be sent from the app (an account is required to post). Submissions may be posted anonymously on the Community Board after the admin approves them.

Please use “Settings” > “Feedback” in the app. Contact details are never published. See our Privacy Policy for details.

For any other inquiries, please email us at support@well-rhythm.com.

Delete your account & data

You can delete your account and associated data anytime from the app: Settings › Account › Delete account / Settings › Privacy & data › Delete all data. If you can't use the app, request deletion from the dedicated page.

Go to account & data deletion →