Personalized AI 100% Private HealthKit

Your cycle, your rhythm.
Powered by AI.

Rythia understands your body through artificial intelligence. Accurate predictions, personalized briefings, and optimized well-being at every phase.

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Free. No credit card required.

10K+ users
4.8★ App Store
GDPR 100%
Rythia app screenshot showing the dashboard with cycle tracking
💬 Personalized AI
★ 4.8

Everything you need

Features designed for you, powered by artificial intelligence

AI Predictions

Our AI analyzes your data for increasingly accurate predictions. The more you use it, the better it understands you.

Daily Briefings

Every morning, a personalized briefing tailored to your phase. Nutrition, exercise, mood — it's all covered.

Partner Sharing

Share your cycle with your partner discreetly. You choose what's visible.

Apple Health

Sync sleep, steps, and heart rate via HealthKit. A complete view of your health.

How does it work?

3 steps to take control of your cycle

1

Enter your data

Last period date, cycle length, symptoms. Onboarding takes less than 2 minutes.

2

The AI learns your rhythm

Our algorithm analyzes your habits and refines its predictions day after day.

3

Live in harmony

Receive your daily briefings, track your insights, and optimize every phase of your cycle.

They love Rythia

Join thousands of women who have taken back control

★★★★★

"Rythia has changed the way I understand my body. The AI briefings are incredible!"

Emma
Emma28 years old
★★★★★

"Finally an app that respects my data. And the partner feature is amazing!"

Sophie
Sophie32 years old
★★★★★

"The predictions are incredibly accurate. I couldn't live without it now."

Your privacy, our priority

Your health data is precious. That's why Rythia never sells it to third parties. Your information stays yours.

  • GDPR compliant — European servers
  • End-to-end encryption
  • No data sold to third parties
  • Full deletion on request

Simple, fair pricing

Start for free, upgrade to Premium or Pro whenever you want

Free

$0forever
  • Basic cycle tracking
  • Daily journal
  • Menstrual calendar
  • Simple predictions
Coming Soon
Popular

Premium

$4.99/ month
  • Everything in Free, plus:
  • Personalized AI briefings
  • Advanced insights
  • Detailed cycle reports
  • Partner sharing
  • HealthKit integration
  • Priority support
Coming Soon

Cancel anytime

Most complete

Pro

$9.99/ month
  • Everything in Premium, plus:
  • 200 AI messages/day
  • Most powerful AI (Claude)
  • Personalized skin & beauty
  • Intimacy & libido
  • Deep AI analysis
Coming Soon

Cancel anytime

See all details

Frequently asked questions

Is Rythia free?

Yes, Rythia offers a free version with basic cycle tracking, daily journal, and calendar. The Premium version at $4.99/month unlocks personalized AI briefings, advanced insights, and partner sharing.

Is my health data protected?

Absolutely. Rythia is GDPR compliant, your data is encrypted and stored on European servers. We never sell your data to third parties.

How does Rythia's AI work?

Our AI analyzes your cycle data, symptoms, and habits to generate increasingly accurate predictions and personalized briefings tailored to each phase of your cycle.

Can I share my cycle with my partner?

Yes! The Partner Sharing feature lets you share selected information about your cycle discreetly. You maintain full control over what is shared.

Is Rythia available on Android?

Rythia is currently available on iOS. The Android version is under development and will be available soon.

The Rythia Blog

Understand your cycle, your health, and your well-being

The complete guide to the menstrual cycle
Guide

The complete guide to the menstrual cycle

Discover the 4 phases, the hormones at play, and how to optimize every moment.

8 min read
Ovulation and fertility: planning a pregnancy
Fertility

Ovulation and fertility: planning a pregnancy

Learn to identify your fertile window and maximize your chances.

7 min read
Wellness and your cycle: optimizing every phase
Wellness

Wellness and your cycle: optimizing every phase

Nutrition, exercise, and self-care synchronized with your cycle.

6 min read
View all articles

Ready to understand your body?

Join thousands of women living in harmony with their cycle.

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App Store — Coming Soon Google Play — Coming Soon