Maré - Period tracker

Content rating
Everyone
1+
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Content rating
Everyone
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About this app

Maré is a simple, private-by-default period tracker.

Your data stays on your device. If you want to sync across devices, you create an account — and even then your entries are encrypted before they leave your phone. Add a secret phrase for an extra layer, and choose whether support can help you recover it: turn recovery off and the encryption is end-to-end, so not even we can read your entries.

WHAT MARÉ DOES
• Visual calendar with real, predicted, and estimated fertile days
• Next-period prediction from your history
• Quick logging of flow, symptoms, and mood
• Cycle history with average and range
• Reminders for upcoming and late periods

REAL PRIVACY
• Your data stays on your device; cloud sync is optional
• Encrypted sync, always — with optional end-to-end protection you control
• Sign in with Apple or Google only to sync
• We don't sell or share your data, and we use no trackers
• Export or delete everything anytime

HONEST ABOUT WHAT IT DOES
Predictions are estimates based on your history. Maré is not a contraceptive method and does not confirm ovulation or pregnancy.

SUBSCRIPTION
Maré Plus unlocks the app after a 30-day free trial. It's an auto-renewing subscription, monthly or yearly, billed to your Google Play account; the price is shown on the subscription screen and you can cancel anytime in your Google Play subscriptions.

Terms of Use: https://ccsrasec.github.io/Mare-iOS/termos-de-uso/
Privacy Policy: https://ccsrasec.github.io/Mare-iOS/privacy-policy/
Maré is a simple, private-by-default period tracker.
Updated on
Sep 5, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

You can now ask for help without leaving Maré. The Help Center, in Settings, has ready answers for the most common questions, works offline and has search.

If that doesn't solve it, start a conversation with us right there — you get a notification when we reply, on any device signed in to your account.

Deleting your account now removes everything at once, including conversations and Maré Together.
Content rating
Everyone
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App support

About the developer
CHRYSTIAN CESAR DOS SANTOS
chrystian.cesar.santos@gmail.com
Rua CAMBARA 100 CASA VERMELHA PORTAO PRETO LAVAPES CÁCERES - MT 78210-792 Brazil
+55 65 99674-5165

More by @CCS-Cesar Santos Consulting