DaysyDay Partner App
A partner app built around trust and privacy.
The DaysyDay Partner app helps couples stay connected to fertility awareness — while you stay in full control of what is shared.
What it is
An optional companion, designed with respect.
Installed on your partner's phone
An optional companion app for a husband or boyfriend — entirely separate from your own.
Shared fertility awareness
A way to support shared understanding of cycle and fertility, together.
Permission-based by design
A respectful, consent-driven extension of the Daysy ecosystem.
Privacy & permission
You decide what your partner sees.
Visibility is yours to control. Choose exactly which categories of cycle data are visible to your partner — and change your mind anytime. Privacy is fully safeguarded, and nothing is shared automatically.
- You control what is visible
- Privacy is fully safeguarded
- Nothing is shared automatically
- Adjust permissions at any time
Benefits
Closer together, with boundaries respected.
Shared understanding
A clearer picture of where you are in your cycle, together.
Supportive communication
Helpful context for thoughtful conversations and shared planning.
Deeper connection
More closeness around fertility awareness and family planning.
Privacy boundaries
Respect for your space — every detail stays under your control.
The ecosystem
Three pieces. One thread of consent.
Daysy device
A hormone-free fertility tracker that measures every morning.
DaysyDay app
Your private mobile companion for cycle insight and history.
DaysyDay Partner app
An optional companion for your partner — visible only with your consent.
Privacy and consent at every step.
Start with the Daysy Fertility Tracker.
The DaysyDay app and Partner app are free companions to your Daysy device.