Log your bleeding, symptoms and moods. Track fertile days, ovulation and your next cycle — all in one place, free in your browser.
How the app looks
A preview with made-up sample data. Click a screen to zoom in, or browse through all of them below.
Color-coded days — period, fertile days, ovulation and the luteal phase (PMS) at a glance.
Tracking your cycle is about more than just period dates. It's about knowing what's coming — and why you feel the way you feel.
Colour-coded days for your period, fertile days, ovulation and luteal phase. At a glance you know exactly where in your cycle you are.
Mark the first day of your period and the intensity. The more data you add, the more accurate your cycle predictions become.
Stomach ache, cramps, headache, fatigue, bloating, acne, nausea — 9 symptoms most commonly tied to your cycle, all in one tap.
Irritability, sadness, anxiety and energy — log your moods and discover how your cycle affects your mental state day to day.
Based on your data, the app estimates when you'll be fertile and when ovulation is due — no manual maths needed.
Know roughly when your next period is coming. The luteal phase and PMS window give you time to prepare, not just react.
Pills, mini-pill or patch. Log that you've done it with one tap and get a reminder on your phone. With hormonal contraception the calendar doesn't predict fertile days. It's just a helper, not a contraceptive method.
Depending on your cycle phase the calendar suggests a herb from the Herbář — for cramps during your period, or for mood and bloating before it.
Download all your entries to a file with one click and import them back any time, for example after getting a new phone.
There's nothing complicated about it. Sign up, log your days and watch — the more data you add, the more accurate the predictions.
Just an email and password. Your data is stored on the server, so you'll have it even if you switch device or browser.
Tap a day in the calendar, mark bleeding, symptoms and mood. Half a minute and you're done.
After two logged cycles the predictions sharpen up. You know in advance what's coming — and why you feel the way you feel.
A period tracker designed to be as simple as possible. Nothing extra, nothing unnecessary — just a clear picture of your body.
Once you're signed in, add the calendar to your home screen — it launches like a real app, one tap, no app store needed.
Install with one tap — your phone will just ask for confirmation.
In Safari, tap Share and choose "Add to Home Screen". Notifications work only from the home-screen app.
Full step-by-step guide is available after signing in, under Settings → 📱 Mobile.
Sign-up takes two minutes. Then just tap the calendar — the app handles the rest.
Create a free account No installation · Free · Your data stays yours