Know the week you’re in.

A free period and cycle tracker for iPhone and iPad. What you log stays on your phone.

Coming soon to the App Store

A young woman with short natural hair sits on a stool against cherry-red paper, holding a mug and talking.
15
symptoms you can log
18
short articles, with sources
0
ads in the app

Your period, counted down

Always a range, like Nov 4–10, because cycles move. It gets tighter as you log.

Your cycle, in four parts

Seven days make a week. A cycle is about four of them, each with its own colour.

  1. A cream knitted hot water bottle on cherry-red paper.

    Period

    Days 1–5

    Heat, rest and stretches, one tap away.

  2. A hyacinth bulb rooting in a glass of water on plum paper.

    Follicular

    Days 6–13

    Energy often comes back.

  3. A ripe apricot split in two on mustard-yellow paper.

    Ovulation

    Around day 14

    Likely fertile days, as an estimate.

  4. A cup of cold tea on a saucer in a beam of evening light on dark aubergine paper.

    Luteal

    Days 15–28

    A heads-up before PMS.

Shown for a 28-day cycle. Seventh learns yours.

A woman in a white shirt stands with her eyes closed and her face turned up to the sun, against plum paper.

Log what you noticed

Flow, mood, energy, 15 symptoms. Most days, two taps. Patterns show up after your second period.

A woman with a black bob sits cross-legged on mustard-yellow paper, laughing with her hand over her mouth.
A woman with braids sits cross-legged on a white bed in morning light, holding a mug and looking out of the window.
A couple sit together on the floor against pale pink paper. She leans back into him, eyes closed and smiling, while he hands her a mug.

What your partner sees

Your phase, your period window, and one thing they can do today. Never your logs or notes.

Invite them with a one-time code. Stop sharing whenever you like.

A small library, with sources

18 short reads from NHS, WHO and CDC guidance. A minute or two each.

  • A cream ceramic dish divided into four, on plum paper.
    Your cycle, in four parts1 min
  • A woman with red hair hugs a knitted hot water bottle against cherry paper, eyes closed.
    Period pain: what helps, and what isn’t normal2 min
  • A woman with a black bob rests her chin on her hand against plum paper.
    PMS, and when it’s more2 min
  • A woman with her hair tied back looks to the side against plum paper.
    PCOS: the signs to know2 min
  • A man hands a woman a knitted hot water bottle against cherry paper.
    Helping on period days for partners1 min
Three cloth-bound books in cherry, plum and oatmeal, stacked.

Plus support lines, and a gynaecologist finder.

It stays on your phone

We don’t sell your data, and we don’t show ads.

No account needed. Face ID lock. No cycle words on your Lock Screen.

A woman with curly hair and freckles sits on a stool in a pool of warm light against dark aubergine paper, looking down at her hands.

Common questions

What is Seventh?

Seventh is a free period and cycle tracker for iPhone and iPad, made by doogud, a small independent studio. It shows where you are in your cycle, predicts your next period as a range of dates, lets you log flow, mood, energy and symptoms, and can share your phase with a partner so they know how to help. What you log stays on your phone.

Is it really free?

Yes. Predictions, logging, the calendar, insights, the library and partner sharing are free, and there are no ads. We may add one small optional extra for partners later. Nothing you need to track your cycle will be behind it.

Where is my data stored?

On your phone. You can use Seventh without an account. If you sign in, your cycle is backed up so you can move to a new phone. Partner sharing sends only what their phone needs to show your phase: the date your last period started, and your cycle and period length.

What does my partner see?

Your phase, your period window, and simple ways to help. Never your logs, symptoms or notes. They can’t change anything, and you can stop sharing at any time.

How accurate are the predictions?

Seventh works from your own cycles, so it gets closer the more you log. Predictions are always a range, never a single date. If your cycles are irregular, or you have PCOS, you can tell Seventh and the range widens to match.

Can I use it as contraception?

No. Seventh is not a medical device and not a form of birth control. Likely fertile days are an estimate. If something feels off, see a doctor.

Can I bring my history from another app?

Yes, from Clue. You can also export everything Seventh holds as a file, or a summary for your doctor, whenever you like.

What do I need?

An iPhone or iPad on iOS 26 or later. There are widgets for your Home Screen and Lock Screen, and a Lock Screen countdown in the days before your period.

When can I get it?

Soon. Seventh is in testing and will be on the App Store shortly. Questions before then: support@doogud.co.

For you, and the person you let in.

Coming soon to the App Store