What exactly does my partner see?

Your phase and cycle day (or pregnancy week), when your period is due, your mood and what you want today. A partner also sees your fertile window. It's an estimate, so don't use it as birth control. Your symptoms and notes stay with you.

What does my partner get out of it?

As an invited partner, they get daily hints by phase, like bringing a heating pad, tea or a blanket during your period. When you mark what you want today, they can get a notification like “Diana is craving sweets”. They can also ask Mia, your AI sister in HeySis, how to support you today. Your partner doesn't need to track a cycle of their own.

Inviting and the whole invited-partner mode are free; if your partner tracks their own cycle in HeySis too, your cycle day and support hints open for them with Premium.