Privacy policy

Effective [launch date of accounts] · previous version November 10, 2026

Who we are

Luba is an iPhone app that suggests meals for each phase of the menstrual cycle. In this policy, "Luba", "we" and "us" mean the operator of the app and of this website. You can reach us at support@luba.health.

What Luba stores

To work, Luba saves the information you choose to enter:

• Your cycle settings and the dates of your periods, and the flow you log
• Symptoms and "feeling good" check-ins
• Health conditions, diet and allergy choices you select during setup (used to filter recipes and show safety notes)
• Meals you mark as eaten, water, saved recipes, your meal plan, grocery list and the ingredients in your kitchen
• Your reminder settings

All recommendations, predictions and insights are worked out on your iPhone, and once you're signed in the app keeps working without an internet connection.

Your account

Luba uses Sign in with Apple. When you sign in, we receive from Apple a private identifier for you, and, only if you choose to share them the first time, your name and your email address (which can be a private relay address that hides your real one). The information listed above is kept on your iPhone and saved to your account on our servers, so it stays in sync between your devices and you can get it back on a new phone. If you use iCloud Backup, Apple also includes the copy on your iPhone in that backup.

• Who can see it: only you, when signed in. Access is restricted per account in our database. We don't look at your data, except when you ask us for help or the law requires it.
• Where it's kept: with our database provider, Supabase, on servers in the United States. It's encrypted in transit and at rest.
• Why: only to save and sync your data and run your account. This is health information, and we use it only with your consent, which you give when you sign in and can withdraw at any time by deleting your account.
• How long: until you delete it or delete your account.

What we don't do

• We don't sell, rent, share or disclose your data, including consumer health data, to anyone, and we never use it for advertising.
• We don't use advertising, analytics, crash-reporting or tracking tools, and we don't track you across apps or websites.
• We don't use your data to train AI models or for any purpose other than showing it back to you in the app.

We use a few service providers only to run Luba: Apple (Sign in with Apple and the App Store), Supabase (accounts and storage) and Cloudflare (this website). They process data only on our behalf.

Apple Health

If you connect Apple Health (Settings → Apple Health, off until you turn it on), Luba asks iOS for permission and you choose what to allow:

• Read: menstrual flow and period dates, symptoms (such as cramps, bloating, headache, fatigue, mood and sleep changes, lower back pain, nausea and appetite changes), basal body temperature and Apple Watch sleeping wrist temperature.
• Write: the periods, flow and symptoms you log in Luba, so your other health apps see them too.

Luba uses Health data only to keep your cycle history complete, to show your logs and to confirm ovulation from your temperature, all worked out on your iPhone. Periods, flow and symptoms brought in from Health become part of your Luba logs and are saved to your account like anything else you log. Temperature readings stay on your iPhone. We never use Health data for advertising or marketing, never sell it, and never share it with third parties. You can change what Luba can access at any time in the Health app → your profile → Apps → Luba, or stop syncing in Luba's settings.

Sharing with a partner (coming later)

A future version will let you share parts of your cycle with a partner. It will be off unless you turn it on, you'll choose exactly what they see, and you can stop sharing at any time. We'll update this policy before it's available.

Notifications

Reminders, such as "Period due in 2 days", are scheduled on your iPhone by the app itself. Nothing is sent from a server. You can turn each reminder off, and "Discreet notifications" (in Reminders) hides what a notification is about on your lock screen.

Files you create

Luba can create a backup file, a spreadsheet of your logs and a doctor report. These files are made on your phone and go only where you send them, for example to Files, iCloud Drive, email or a printer. Keep them somewhere safe: they contain your health information.

Your choices and rights

• See and export your data: Settings → Your data → Save backup or Export CSV.
• Delete your account: Settings → Account → Delete account. This permanently erases your account and all its data, on our servers and on your iPhone, and revokes Luba's access to your Apple ID.
• Start over: Settings → Reset and set up again erases your Luba data from your iPhone and your account but keeps the account.
• Sign out: removes your data from that iPhone; it stays in your account.
• Notifications: turn them off in the app's Reminders, or in iPhone Settings → Apps → Luba → Notifications.

Depending on where you live (for example under US state health-privacy laws or Mexico's data-protection law), you may have rights to access, correct, delete or move your data, and to withdraw consent. You can do most of this in the app; for anything else, write to us and we'll respond within 30 days.

This website

luba.health uses no cookies, analytics or trackers, and loads nothing from other sites. Like any website, our hosting provider may keep standard server logs (such as IP address and pages requested) for a short time to keep the site secure and running.

Children

Luba is not directed to children under 13, and we do not knowingly collect information from children under 13. If you believe a child has created an account, contact us and we'll delete it.

Changes to this policy

If we change how Luba handles data, we'll update this page and the date at the top, and explain significant changes in the app's release notes. We'll ask for your permission before any new use of your data.

Contact

Questions or requests: support@luba.health