Tsubomi - Fertility & Cycle

Tsubomi is a gentle fertility & menstrual cycle journal for women who want to know their body better. Record your basal body temperature each morning, and Tsubomi automatically detects your cycle phase — menstrual, follicular, ovulation, or luteal. Ovulation and next-period predictions are shown quietly, without pressure. ――― ● A minute a morning, a lifetime of understanding ― Enter BBT from 36.00 to 38.00°C in 0.05°C steps ― Log mood and symptoms with emoji and chips ― One page a day, one minute to complete ● Your cycle, beautifully visualized ― BBT line chart across your last two cycles ― Phase coloring: menstrual, follicular, fertile, luteal ― Average cycle length and variability at a glance ● Reminders that don't push ― Gentle nudge the day before predicted ovulation ― Soft heads-up three days before your period ― Never aggressive, never guilt-inducing ● Privacy by design ― All data stored only on your device ― No cloud, no server, no third parties ――― 【Tsubomi Pro】 ・Unlimited cycle history ・5 custom themes ・CSV export ・AI cycle insights ・Supporter tips Monthly: ¥480 (7-day free trial) Yearly: ¥4,800 (7-day free trial, ~¥400/mo) Auto-renewing subscription. Manage/cancel in App Store account settings. Cancel at least 24 hours before renewal. Privacy: https://starcrown.co.jp/privacy Terms: https://starcrown.co.jp/terms ――― Note: Tsubomi is not a medical device and does not provide medical advice. For questions about pregnancy, fertility treatments, or reproductive health, please consult your healthcare provider. Made by Starcrown, Inc.