CykieYour cycle,
kept just between you and your phone.
Cykie predicts your period, fertile days and ovulation, spots your patterns and nudges you at the right moment. No account, no cloud, no tracking.
- 🔒 Works fully offline
- 🚫 No ads
- 🌍 17 languages
- 🌙 Light & dark
Everything in one small, friendly app
Made to be quick: log a day in a few taps, glance at Today, and get on with it.
Predictions that learn
Your next period, fertile window and ovulation, from your own logged cycles, with how sure Cykie is.
A calendar at a glance
Period, predicted and fertile days in colour, the whole year in one view, and search for when something last happened.
Log in seconds
Flow, pain, symptoms, cravings, moods, discharge, tests, sleep, water and notes, plus your own symptoms.
Insights that make sense
Cycle trends, pain by period day, what helps, mood and sleep links, and cycles side by side.
Ovulation from temperature
Log your morning temperature and Cykie spots the rise that follows ovulation.
Gentle reminders
Period, fertile days, pill packs, ring, patch or injection, breast checks. Tap “It started” right from the reminder.
Ready for your doctor
A short, clear summary of your cycles, pain and symptoms to share or copy before an appointment.
Make it yours
Seven looks from Classic to Candy Pop, your own character, stickers, home-screen widgets and app icons.
Private by design. Not by promise.
Cykie has no servers to send your data to. Your cycle lives in the app's storage on your phone, and nowhere else, so no one else, including the developer, can ever see it.
- No account or sign-up
- No cloud, no syncing to anyone's servers
- No analytics, ads or trackers
- A PIN or Face ID lock, and discreet notifications
- Back up, export or delete everything yourself, any time
💞 For partners, too
Partner mode turns Cykie into a guide for supporting someone you love: her phase, what's coming, and how to help. Updates are shared only when she chooses to send them.
🌸 Through every stage
Trying to conceive, on the pill, or noticing perimenopause changes? Cykie adapts its reminders and insights to where you are.
Speaks your language
- English
- Español
- Português
- Français
- Italiano
- Deutsch
- Nederlands
- Türkçe
- Polski
- Русский
- العربية
- اردو
- हिन्दी
- Bahasa Indonesia
- 中文
- 日本語
- 한국어
Questions
Where is my data stored?
Only on your phone, in Cykie's private storage. It is never uploaded anywhere, so the developer can't see it either.
How do I move to a new phone?
In Cykie, open Settings › Your data › Export to save a backup file, then use Import on the new phone.
Can Cykie be used as contraception?
No. Its predictions are estimates from your logged cycles and aren't a reliable way to prevent pregnancy.
Do I need an account?
No. Open the app and start. There's nothing to sign up for.
Is it on Android?
Cykie is on the App Store for iPhone now. Android is on the way.
More help on the support page.