Your cycle, beautifully clear.
Log periods, symptoms, and moods in seconds, and see the full picture at a glance.
PCOS care, in your rhythm
Care that listens to your whole story.
Cyster brings your cycle, symptoms, nourishment, movement, rest, and reflections together, so you can notice patterns without reducing yourself to a number.
Private by design · Your logs stay on your phone
Daily balance
Your whole day, together.
Cycle, meals, movement, rest, and medication live side by side, so nothing about your care gets lost between apps.
Nourishment, not rules.
PCOS-friendly recipes with gentle AI feedback on your plate, never judgment.
Move with confidence.
Gentle, PCOS-friendly movement that meets your body exactly where it is.
Rest is part of the plan.
Wind-downs, calm tools, and sleep tracking that treat rest as care, not a reward.
Nudges, never nagging.
Medication and supplement reminders that cheer you on and quietly adapt when life happens.
PCOS guides, in plain language.
From phenotypes to supplements, understand what is going on in your body without the jargon.
“Your body is not betraying you; it is asking to be understood with patience, care, and tenderness.”
A daily reflection inside Cyster
Cyster Care
A companion in your pocket.
Questions at 2 a.m., a craving you cannot explain, a plan that needs adjusting. Your coach listens first, then helps, drawing on your own logs instead of generic advice.
Cyster Carealways on your side
You have logged poor sleep three nights this week. Want to try a gentler evening plan?
Yes, something low-key.
Done. I swapped in two short wind-downs and moved your reminder to 21:30.
AI replies inform and organize. They never diagnose, prescribe, or replace your clinician.
Insights
Scattered signals, one clear picture.
Cyster maps your patterns so irregular cycles finally start to make sense. Watch symptoms, sleep, and routines line up over time, in language you can bring to your next appointment.
- Pattern timelines across every cycle
- Symptom, craving, and energy correlations
- Gentle summaries you can share with your clinician
Private by design
Read the privacy policyOn-device first
Your logs, journal, and history live on your phone, not on our servers.
You choose what leaves
AI chat and meal photos are sent only when you use those features.
Delete anytime
Clear local records in settings, or ask us to remove the rest. No dark patterns.
Welcome to Cyster.
Thoughtful PCOS support on iOS and Android. Crafted with care for our Cysters.
Built for adults navigating PCOS