Two cycles. One relationship.
A cycle tracker for two people who both have one. Sapphic couples, besties, or just you for now. See both cycles, how they overlap, and how to support each other.
One email when we launch. Read the privacy note.
Cycle apps assume one tracker.
When you both have a cycle, most apps can't show them together. Partner features are written for a boyfriend, sharing costs extra per person, and nobody tells you that you're both about to be PMS-ing. Two Tides is built for two from day one.
Two tides that rise and fall, sometimes together, sometimes not.
Read the weather between you.
Know it before it turns into a fight about the dishes.
Both cycles, one calendar
See your cycle and your person's side by side, with the days you overlap marked.
The climate between you
A daily read of where you both are: both high, both low, or mismatched. Moody weather is real weather.
Care in their own words
Hot water bottle? Space? Snacks? Your person tells the app what helps, so you'll know.
Gentle nudges
"Mia's period is probably starting tomorrow. She said a hot water bottle helps." Playful or plain, your choice.
Honest predictions
Ranges, not fake precision: "Probably Nov 12, could be Nov 10–14." It gets clearer the more you log.
Both your tides, on your home screen
Widgets show today's phase for you both, at a glance.
However you share a cycle.
Start alone and add someone later. Inviting your person is always your call, never forced.
Couples
We both cycle. Two weathers, one home.
Besties
Period solidarity and snack logistics.
Just me
My cycle, my rules. Add someone later if I want.
Your cycle is yours.
Everything is off until you switch it on, one data type at a time, for each person. Pause sharing whenever you need to. No ads, no tracking, and your data is stored in the EU.
Good to know.
When does Two Tides launch?
Soon, on iPhone first. Leave your email above and we'll tell you the day it's out.
Does my person need the app too?
It works best when you both use it. If they'd rather not, you can track their cycle for them, but only once they've said yes. They can take over their profile any time.
Is it free?
Tracking, predictions and connecting with one person are free. Premium adds insights together, nudges, widgets and the assistant. One plan covers the two of you.
Who can see my data?
Only you, until you share. You choose what to share and with whom, and you can pause or stop at any time.
Is it only for sapphic couples?
It's made with sapphic couples in mind, and it's for anyone where both people have a cycle: partners, besties, or just you.
Need help? Two Tides support · Privacy policy