Period and cycle tracker for iPhone and iPad

Know the week you’re in.

Seventh shows where you are in your cycle at a glance, and lets the person closest to you know how to help. Free, and your cycle stays on your phone.

Coming soon to the App Store Free. No ads. No subscription.
A young woman with short natural hair laughs, looking away, against cherry-red paper in hard window light.
Seventh's Today screen on day 3 of a period. It reads Day 3, next one around Nov 19 to 25.

11 days until your period.

One number, one colour, the phase you’re in. Predictions come as a window, like “likely Nov 4–10”, because bodies don’t run on dates. They get closer every time you log.

Every week of the month.

Seventh is short for seventh heaven: feeling good in your body, all month. The app wears the colour of the phase you’re in.

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

    PeriodDays 1–5

    Go slow.

    Tiredness and cramps are common. Heat, rest and a timer to keep you company are one tap away.

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

    FollicularDays 6–13

    Coming back up.

    Energy often picks up after a period. Focus and mood tend to follow.

  3. A split apricot beside a glass of water throwing light on mustard-yellow paper.

    OvulationAround day 14

    Mid-cycle.

    Some feel more social, many notice no change. Likely fertile days are an estimate, never a promise.

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

    LutealDays 15–28

    Be kind to you.

    PMS can show up near the end. A heads-up arrives before it does.

Days shown for a 28-day cycle. Yours will be different, and Seventh learns it from you.

Log

Two taps, then get on with your day.

Flow, mood, energy, symptoms. Tap what’s true and skip what isn’t. Patterns show up after your second period.

  • Medium flow
  • Low
  • Cramps
  • Bloating
  • Headache
  • Fatigue
  • Cravings
  • Back pain
  • Insomnia
  • Acne
  • Hot flashes
  • Poor sleep
  • Pill taken
A woman in a white shirt with her eyes closed, face tilted up into the sun, against plum paper.
Seventh's log screen with medium flow, a low mood, low energy, cramps and fatigue selected.
A woman with braids sits cross-legged in a bright bed with a mug, looking out of the window.
A woman with a black bob hugs her knees on a stool and grins at someone off-frame, against mustard-yellow paper.
Two friends laughing on a sunlit stone step.

For the slow days, the good days, and all the ones in between.

Built for two

Let someone in.

Invite your partner, or whoever is closest to you, with a one-time code. Their phone tells them what’s going on and what would help.

  • Your phase, not your diary.They see your phase and your period window. Never your logs, symptoms or notes, and they can’t change anything.
  • One thing to do today.Warm drinks. Just listen. Ask what would help.
  • Check-ins that aren’t awkward.“Thinking of you” or “Something warm” in a tap.
  • Yours to switch off.Stop sharing whenever you like.
The partner's Today screen. It reads: your partner's period, day 3, ask what would help, with a button to send a check-in.
A man rests his chin on a laughing woman's shoulder and holds out a mug to her, against pale blush paper.

Straight answers, with sources.

18 short reads on periods, symptoms, conditions, contraception and seeing a doctor, written from NHS, WHO and CDC guidance. Most take a minute or two.

Three cloth-bound books in cherry, plum and oatmeal stacked on blush paper.
  • Your cycle, in four partsCycle basics · 1 min
  • Period pain: what helps, and what isn’t normalSymptoms · 2 min
  • PMS, and when it’s moreSymptoms · 2 min
  • PCOS: the signs to knowConditions · 2 min
  • Getting ready for a gynae appointmentSeeing a doctor · 1 min
  • Helping on period daysFor partners · 1 min

And when you need a person: support lines for India, the UK and the US, and a quick way to find a gynaecologist near you.

Privacy

Yours to keep.

No account needed, no ads, no trackers. What you log lives on your phone.

  • On your phone.Everything you log is stored on this device. Back it up only if you choose to sign in.
  • Locked with Face ID.Ask for Face ID every time Seventh opens. Discreet wording keeps cycle words off your Lock Screen.
  • Soft mode.On a rough day, turn Today down to just the essentials. It’s back to normal tomorrow.
  • Leave whenever.Export everything, or erase it, from Settings.
A woman with curly hair and freckles smiles to herself in a slice of warm light against dark aubergine paper.

Free.

Tracking is free, always. No ads, no subscription, and nothing that says “upgrade to unlock your insights”.

Questions.

Is Seventh really free?

Yes. Predictions, logging, the calendar, insights, the library and partner sharing cost nothing, and there are no ads. We may add one small, optional extra for partners later. Nothing you need to track your cycle will sit 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: your last period date 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 learns from your own cycles, so it gets closer the more you log. Predictions are always a window, never a single date. If your cycles are irregular, or you have PCOS, you can tell Seventh and the window 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, talk to a doctor.

Can I bring my history from another app?

Yes, from Clue. And you can 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. Seventh comes with 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 now 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 Free on iPhone and iPad.