Whales Breathe
Period cycle calculator
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$2.99
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About
Buy once and enjoy a lifetime of use. No ads, no network access required – use it anywhere, anytime.
This app helps to predict your menstrual cycle, ovulation date, and safety period.
It also provides a widget that displays today's menstrual day, such as ovulation day, safe period, and so on.
Get it free now, keep it forever!
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What's New in Whales Breathe
1.3.1
October 10, 2026
- Fixes the registration details shown in Settings for mainland China.
