Her Day – Period Tracker

Her Day is a simple and private period tracker designed to help you understand your menstrual cycle.
Track your periods, cycle days, symptoms, mood and flow. See your predicted next period, fertile window and ovulation days in an easy-to-read calendar.
No account required. Your cycle data stays on your phone.

🩸 TRACK YOUR PERIOD
• Start and end your period with one tap
• See "Your next period in X days" at a glance, with the current cycle day and phase
• Your average cycle length and period length are worked out from your own logs

🔮 PREDICTIONS THAT GET BETTER AS YOU LOG
• Next period, fertile window and ovulation day shown on a colour-coded calendar
• Predictions improve with every cycle you record
• Estimates only, clearly labelled as such

📝 LOG HOW YOU FEEL
• Mood: Great, Good, Okay, Low, Bad
• Symptoms such as cramps, headache, back pain, acne, dizziness and more
• Flow, notes and daily details, saved in a moment

📅 A CALENDAR YOU CAN READ AT A GLANCE
Period days, predicted days, fertile days and ovulation are each marked in their own colour, so you always know where you are in your cycle.

🎯 PERSONAL TO YOUR GOAL
Choose what matters to you: track my period, get pregnant, or avoid pregnancy. HerDay tailors your home screen to your goal. You can change it any time. A pregnancy mode lets you follow your pregnancy week by week.

🔔 GENTLE REMINDERS
• Period reminder before your expected start
• Daily log reminder at a time you choose
• Fertile window alert (optional)
Turn each one on or off whenever you like.

🔒 PRIVATE BY DESIGN
• No account required. Start tracking right away
• Your cycle data is stored on your device
• Her Day never sells your health data
• Export your data as CSV or JSON any time
• Delete all your data any time from Settings

🌐 AVAILABLE IN 11 LANGUAGES
Use Her Day in the language you are most comfortable with:
English • हिन्दी (Hindi) • ગુજરાતી (Gujarati) • मराठी (Marathi) • বাংলা (Bengali) • తెలుగు (Telugu) • தமிழ் (Tamil) • ಕನ್ನಡ (Kannada) • മലയാളം (Malayalam) • ଓଡ଼ିଆ (Odia) • اردو (Urdu, right-to-left)
Pick a language on the welcome screen and change it any time in Settings. Dates, reminders and exports follow your language too.

Her Day is free to use and supported by simple banner ads.

⚠️ Medical disclaimer: Her Day provides estimates based on the information you log. It is not a medical device and must not be used as contraception or as a substitute for professional medical advice, diagnosis or treatment. If you have health concerns, please speak to a doctor.

Her Day is a private period and menstrual cycle tracker with a simple calendar, period reminders, symptom tracking, mood tracking, fertile window and ovulation estimates.

Recent changes:
• New period calendar: pick start and end dates on a clean, easy-to-read range picker
• Forgot to log? Set the real start or end date right from Home, or extend your last period from the Calendar
• Smarter predictions: your chosen cycle length now blends with your logged cycles, so one unusual month no longer throws things off
• More reliable daily and cycle reminders
• Bug fixes and performance improvements