A Note From Our Founder
Hi, I'm the solo developer behind MyLunarPhase. I built this app because I'm passionate about women's health and believe every woman deserves tools that honor her body's natural rhythms.
I only collect the information the app needs to work for you — never to sell it, and never to profit from it. Your health data is yours.
This policy explains exactly what data we collect, why, who it is shared with, and the control you have over it. It describes the MyLunarPhase iOS app.
What We Collect & Why
We only collect what is necessary for the app to work for you:
- -Account details — Your name and email address, so you can create an account and sign in. If you use Sign in with Apple, we receive only your name and email.
- -Cycle & period data — Your period dates, cycle length, symptoms, and life stage. This is kept on your device to power the app. If you use Partner Sharing, the cycle information you choose to share is stored on our servers so your partner can see it.
- -Mood & journal entries — Saved to your account so they sync to your sign-in and power your personalized insights.
- -Subscription status — Whether you have an active subscription or free trial, so we can unlock premium features.
- -Notification token — If you enable reminders, a device token so we can send the notifications you asked for.
- -Partner sharing — If you connect a partner, the cycle information you choose to share is stored so it can be shown to them. Partner sharing only happens if you explicitly opt in, and you can revoke access anytime.
AI-Powered Features
When you use Luna AI or request journal insights, the entries you submit are sent to our AI provider, Anthropic (Claude), to generate a response. This content is processed to give you a reply and is not used to train AI models. Your chat history is stored in your account so you can revisit it.
What We Do NOT Do
- -We do not sell your data. Ever.
- -We do not share your data with advertisers or data brokers.
- -We do not track you across other websites or apps.
- -We do not use your health data for marketing purposes.
- -We do not run advertising or third-party analytics tracking in the app.
Third-Party Services We Use
To make the app work, we rely on a small number of trusted services. Here's exactly what each one does and what data it touches:
Apple (Sign In & Payments)
If you use Sign in with Apple, we receive only your name and email. Subscriptions are purchased and billed through the Apple App Store — we never see or store your payment card details.
RevenueCat (Subscriptions)
Helps us manage and verify your App Store subscription status so we can unlock premium features. It receives your subscription and purchase information, not your health data.
Anthropic (Luna AI)
Powers Luna AI chat and journal insights. When you use these features, your message is sent to Anthropic (Claude) to generate a response. Conversations are not used to train AI models.
Railway (Hosting & Database)
Hosts our backend and stores your account and wellness data on secure servers in the United States. Data is encrypted in transit and at rest at the infrastructure level.
Resend (Email)
Sends transactional emails like password resets. Your email address is shared with Resend solely for delivery. They do not use it for marketing.
Data Security
Your health data deserves strong protection. We use the following safeguards:
- -Encrypted in transit — All data between your device and our servers is protected with HTTPS/TLS.
- -Encrypted at rest — Our hosting provider encrypts stored data at the infrastructure level.
- -Passwords are securely hashed — We store only a one-way hash of your password and cannot view or recover it.
- -Payment security — All purchases are handled by the Apple App Store; payment card details never touch our servers.
- -On-device data — Much of your day-to-day cycle data stays on your device and is only sent to our servers for features you use, such as partner sharing or AI insights.
Your Rights & Control
You are always in control of your data:
- -Delete your account — Anytime from Settings → Delete Account. This permanently removes your personal data from our servers within 30 days.
- -Request a copy of your data — Email us and we'll provide the information associated with your account.
- -Revoke partner sharing — Disconnect your partner at any time from Partner settings.
- -Cancel subscription — Cancel anytime in your Apple Account subscription settings. Your data stays until you choose to delete it.
Children's Privacy
MyLunarPhase is not intended for anyone under 13, and we do not knowingly collect personal data from children under 13. If you believe a child has provided us information, please contact us and we will delete it.
Changes to This Policy
If we ever update this policy, we'll post the changes here with a new date. We will never quietly change how we handle your data.
Questions?
I believe in transparency. If you have any questions about your privacy or how your data is handled, please reach out at mylunarphase@pm.me.