In development · not released yet

Two cycles.
One calendar.

A cycle, mood and check-in app that works beautifully on your own — and opens up when you share it with her.

Coming soon to theApp Store Coming soon toGoogle Play
Tell me when it’s out →
A month view showing two cycles side by side The Today screen showing both people's check-ins The Moon tab showing phase, sign and houses
Where it’s at

The app is built and working — these are real screenshots, not mockups. What’s left is the unglamorous part: company paperwork, developer accounts, and store review. That takes weeks, and most of it is waiting rather than building.

Leave your email and you’ll get one message, the day it’s live on both stores. Nothing before that.

Most cycle apps assume one of you is watching.

SapphicTides assumes you both bleed — and that keeping track of each other is the entire point. Though it's just as good if it's only you, for now.

🩸

Two cycles, side by side

Phases, day counts and what's likely coming — for both of you, on one calendar, without either of you having to ask.

Check in as often as the day changes

Energy, mood, what you need, symptoms. She sees it in plain language, can mark it seen, and can reply. No more reading tone into a short text.

💬

The words that are hard to start

One tap for "not upset, just quiet", "I could use a hug", "can we talk later?" — and a shared list of things to raise, so nobody gets ambushed.

🌙

Moon and astrology

Live phase and sign, which house it's moving through for each of you, the week ahead, and the traditional white, red, pink and purple moon cycles.

💜

Wellness that knows the phase

What to eat, seed cycling, and the part couples actually use — what genuinely helps her in the phase she's in right now.

🎖️

Notes, prompts and shared goals

A question you both answer blind. Notes you leave for each other. Things you're doing together that only finish when you both finish them.

It works before there's a second person.

Your cycle, your moods, the moon, your notes and your goals — all of it works on your own, framed for one. Nothing is greyed out and nothing is locked behind an invite.

When you're ready, you send one link. Everything you wrote alone stays private unless you decide otherwise — and your notes stay private either way.

The weekly check-in screen
Phase wellness guidance

Built for the week you have the least to give.

The luteal-phase advice isn't a listicle. It's the specific, unglamorous things that help — and, if you've shared it, what would help her.

Because the most useful thing an app can tell your person is "she's not being difficult, it's day 24."

We can't read a word of it.

Not a promise. A property of how it's built.

Encrypted on your phone

Every entry is encrypted before it leaves your device, with a key generated on your phone that never reaches our servers.

Even the dates are hidden

Row names are cryptographic hashes, so the database can't reveal which days you've written about — let alone what you wrote.

No ads. No trackers. No analytics.

There is no advertising SDK, no analytics SDK and no third-party tracker in this app. Nothing is sold, shared or rented. Ever.

Your data stays in Canada

Stored in Toronto, outside US jurisdiction, and encrypted the whole time it's there.

Delete it all, instantly

One tap in settings removes your account and everything attached to it. No grace period, no "contact support", no soft delete.

Paid once, not forever

One price, no subscription. You are the customer, which is the only arrangement where an app like this can be trusted.