HeySis: Cycle & Period Tracker

HeySis is a period and cycle tracker with Mia, an AI companion you can talk to about your mood, PMS and wellbeing.

Talk with Mia, your AI companion, about your cycle and how you feel. She uses the information you choose to share and explains it in everyday language.

WHY WOMEN KEEP HEYSIS
• A daily check-in that takes just a few taps.
• Mia, an AI friend you can actually chat with about your period, mood, PMS and body.
• “This is normal” — honest reassurance, and a gentle nudge to see a doctor when something truly deserves a look.

Your diary stays on your device. Optional cloud sync encrypts diary content before upload; dates and sync metadata remain visible to the service. Online Mia and Circle sharing use the information you approve. See the Privacy Policy for details.

CYCLE & PREDICTIONS
• Period start, length, cycle history and regularity.
• Predictions for your next period, ovulation and the fertile window.
• Late days handled calmly — no panic.
• A phase calendar — menstrual, follicular, ovulation, luteal — so “off” days finally make sense.

LOG IN ONE TAP
• Period and flow — one tap from the home screen.
• Mood, energy and mood swings.
• Symptoms: cramps, headache, fatigue, acne and dozens more.
• Discharge, ovulation and pregnancy tests.
• 90+ options — and none of them required. Log only what matters to you.

Track birth-control pills and pregnancy. Add widgets, choose a pet and arrange your home screen. Import logged period days from a calendar screenshot and check the result before saving.

ASK MIA
• “Why is my period late?”, “Is this PMS?”, “Why do I get cramps?” — ask in everyday words.
• Mia answers around your own data: where you are in the cycle, what it may be, and what to watch next.
• Before any online AI is used, HeySis shows what limited summary would be sent and asks your consent — or keep Mia fully on-device.
• Mia never “chats through” alarming symptoms — she gently points you to a doctor instead.

GENTLE REMINDERS
• A heads-up before your period, on the expected day, and if it’s running late.
• Optional PMS and fertile-window reminders. Cycle reminders are limited to one per day. Pill and Circle notifications are separate; shared names or status may appear in Circle notifications.

SHARE WITH YOUR PARTNER — BUILT IN
• Invite your partner or a close friend with a simple code.
• They see your current phase, today’s mood and concrete “how to support her” tips — never your symptoms or raw logs.
• They can send warmth back with reaction stickers.
• Basic invitations and companion mode are free. Detailed Circle content and some other features require Premium.

A REPORT FOR YOUR DOCTOR
• One tap builds a clear PDF: last 6 cycles, regularity, key findings, symptom timing, 30-day diary.
• Made fully on your phone; it leaves only if you share it. Your chats with Mia are never included.

SELF-CHECKS & SHORT, HUMAN ARTICLES
• Gentle self-checks: late period, strong pain, heavy bleeding, unusual discharge and more.
• Quick reads on phases, PMS, pain, ovulation and discharge — backed by trusted sources (NHS and others).
• Plain guides to PCOS, endometriosis and PMDD.

SWITCHING FROM ANOTHER TRACKER?
• Import your history from Flo or Clue in a minute — your existing days are never overwritten.

HeySis is for anyone who wants to understand their cycle without the overwhelm — regular or all over the place, curious about your body, riding out PMS, or just tired of facing it alone.

Mia is not a doctor and doesn’t diagnose. HeySis is educational and not a medical device: predictions are approximate, are not contraception, and don’t replace professional medical advice.

Terms of Use (EULA): https://heysiss.vercel.app/terms