RYTEX: Period & Cycle Tracker

Know Your Rhythm.

RYTEX is a private, ad-free period and cycle tracker. Your health data lives on your device — always.

TRACK YOUR CYCLE • Period & ovulation predictions • Symptom tracking (mood, cramps, energy, sleep and more) • Daily & monthly cycle insights • Irregular cycle support

PLAN AHEAD See your predicted period dates for the next 3 and 6 months. Plan your vacation, your important days, your life — without surprises.

PARTNER SHARING • Share your cycle privately with your partner • Sharing starts only with your invitation and their explicit acceptance • End-to-end encrypted — no one can read it, not even us • You control what they see, and you can stop sharing anytime

TRULY PRIVATE • Your health data stays on your device • Anything you share is end-to-end encrypted • No ads. Ever. • No data selling. Ever. • No account required to start

HEALTH INSIGHTS • Science-based cycle analysis • PMS & ovulation pattern detection • Doctor report export (PDF)

SPARK Something your partner can send you. Something you can send back. Only visible when you open the app. No notification. No trace.

Some things don't need words.

DISCREET BY DESIGN All notifications are private. No period dates. No symptom details. No cycle info. Just a gentle nudge — nothing more.

Your health is yours alone.

Apple Health: RYTEX can import your past Menstrual Flow records from the Health app (read-only) so you keep your history when switching from another period tracker. Settings → Data Transfer → Import from Health. — MEDICAL DISCLAIMER RYTEX is not a medical device and does not provide medical advice, diagnosis, or treatment. It is not a diagnostic tool and must not be used as contraception. Predictions and insights are for informational purposes only. Always seek the advice of a qualified healthcare professional in addition to using this app, and before making any medical decisions or changing your treatment.

Terms of Use (EULA): https://rytex.app/terms Privacy Policy: https://rytex.app/privacy