Period, ovulation & mood tracker

See the teary
days coming.

Lulu predicts your period and fertile window, and learns how you usually feel in each phase. A gentle bunny in your pocket, so PMS stops catching you off guard.

See how it works

Scan to get LuluPoint your iPhone camera here

🔒 Your cycle stays on your iPhone
🎁 3 days free
🚫 No ads

Lulu's Today screen: days until your period, today's phase and mood forecast

Period in 8 days

Tomorrow: a bit teary

Fertile window opens Fri

Sound familiar?

Crying at an advert, then finding out two days later why.

Most trackers tell you when you’ll bleed. Lulu also tells you how you’ll feel, so the low days, the short fuse and the 11pm cravings stop feeling random. They’re a rhythm. Yours.

Your cycle, your moods

Four phases. Four moods.

Days 1–5

Period

Tender

Energy dips and you want to turn inward. Totally normal: hormones are at their lowest.

Lulu nudges you to rest, sends a cosy check-in, and logs flow in one tap.

Days 6–12

Follicular

Calm & curious

Estrogen climbs and so does your mood. Fresh starts feel easy now.

Great days to plan, start, and say yes. Lulu tells you they're coming.

Days 13–16

Ovulation

Bright & social

Peak energy, peak confidence. Your fertile window is open.

Lulu marks the window clearly, whether you're hoping for a baby or not.

Days 17–28

Luteal

Up and down

Progesterone rises, then everything drops. Hello, PMS: tears at adverts, cravings, short fuse.

Lulu's mood forecast warns you two days ahead, so it never blindsides you again.

The mood forecast

Like a weather app, for your feelings.

Check in with a tap each day. After a couple of cycles Lulu shows how you usually feel on the days ahead, and how often that held true: calm days, bright days, and the ones to keep your calendar light. Your pattern, not a horoscope.

“Day 24: usually tired and a bit tender, 4 of your last 6 cycles”
A gentle heads-up before your tougher days
See which phase brings which mood, in your own data
Share a gentle heads-up with your partner, if you want to

Lulu’s forecast

Monhappy

Tuecalm

Wedtired

Thutender

Friirritable

“Thursday might feel heavy. Plan something cosy?”

Everything you need

Everything a tracker should do. And a bunny.

Period & ovulation predictions

Your next period, fertile window and ovulation day, learning from your own cycles.

Mood forecast

Lulu warns you two days before the teary, snappy days arrive.

Symptoms as bunnies

Cramps, bloating, cravings: log them in one tap, drawn as Lulu.

A doctor-ready PMS chart

Months of moods and symptoms on one page, to show at your appointment.

Apple Watch temperature

Wrist temperature shifts help confirm when you ovulated.

Irregular cycles welcome

Predictions that adapt, plus a perimenopause mode when things start to change.

Insights

Bring the receipts.

After two cycles, Lulu turns your check-ins into a clear PMS chart you can show your doctor. No more “I think it’s every month?”

Moods and symptoms by cycle day, on one page
Your own words, your own data, exported in a tap
Lulu doesn’t diagnose. It helps you have a better conversation.

Inside Lulu

Soft on the eyes. Sharp on the maths.

Lulu app: Today. Your phase, your forecast, one glance. — **Today**Your phase, your forecast, one glance.

Lulu app: Log in a tap. Moods and symptoms, drawn as Lulu. — **Log in a tap**Moods and symptoms, drawn as Lulu.

Lulu app: Calendar. Period, fertile window, ovulation day. — **Calendar**Period, fertile window, ovulation day.

Lulu app: Predictions. What tomorrow is likely to feel like. — **Predictions**What tomorrow is likely to feel like.

Lulu app: Insights. Your patterns, ready for your doctor. — **Insights**Your patterns, ready for your doctor.

Lulu app: Guide. Kind, illustrated answers. — **Guide**Kind, illustrated answers.

Meet Lulu

Hi, I’m Lulu.

I’m a little bunny with a big job. I change colour with your cycle, I remember how you felt, and I never judge. Some days you’re a firework. Some days you’re a blanket. Both are fine.

Private by design

Your cycle is nobody’s business.

Your periods, moods, symptoms and notes stay on your iPhone. We never receive them, so we can’t sell them, share them or lose them.

No account needed

No email, no sign-up. Open the app and start.

No cycle data on our servers

There is no Lulu server holding your cycle. Partner sharing goes through Apple’s iCloud.

No ads, ever

Lulu Plus pays the bills. You are not the product.

Yours to take, yours to delete

Export everything as a file whenever you like, or delete the app and it’s gone.

For two

Let them in, gently.

Invite your partner with a private iCloud link. They see your phase and next period, plus today’s mood and tomorrow’s forecast if you choose to share them, so they know when to bring snacks, not debates. Never your symptoms, notes or history. Stop sharing any time.

A guide for partners →

Try it now, free

When is your next period?

Two answers and you’ll know. Then let Lulu do it for you, every month.

First day of your last periodUsual cycle length

28 days

From one period's first day to the next. 28 is only an average.Period length

5 days

Next period: Friday, November 13

That’s in 18 days.

Fri, Nov 13 – Tue, Nov 17
Fri, Dec 11 – Tue, Dec 15
Fri, Jan 8 – Tue, Jan 12
Fri, Feb 5 – Tue, Feb 9
Fri, Mar 5 – Tue, Mar 9
Fri, Apr 2 – Tue, Apr 6

1617181920212223242526272829☀31123456789101112

PeriodFollicularFertileLuteal

🔒 Calculated in your browser. Nothing you type is sent or stored. Estimates only: cycles vary.

More free calculators: ovulation · fertile window · due date · PMS self-check · all tools

Simple pricing

Try everything free for 3 days.

1Today

Download Lulu and unlock everything.

2Day 2

Lulu reminds you before your trial ends.

3Day 3

Keep Lulu Plus yearly, or cancel in two taps.

Then Lulu Plus is one yearly subscription, priced for your country in the App Store. It renews automatically unless you cancel at least 24 hours before the end of the trial or the current year, in your App Store settings.

Questions

Good questions.

Is Lulu free?

Lulu is free to download and every new user gets a 3-day free trial of Lulu Plus, with everything unlocked. After the trial, Lulu Plus is one yearly subscription. Cancel any time in your iPhone settings before the trial ends and you won't be charged.

How does Lulu predict my mood?

You check in with a tap each day. Lulu matches your moods to your cycle days and, after a couple of cycles, shows how you usually feel on the days ahead and how often that held true, with a gentle heads-up before the harder ones. It's your pattern, not a promise.

Where is my data stored?

On your iPhone. Your periods, moods, symptoms and notes are never sent to our servers, and there's no account to create. If you invite a partner, only a small status (your phase and next period, plus your mood if you choose) is shared through Apple's iCloud.

Can I use Lulu as birth control?

No. Lulu estimates your fertile window to help you understand your body, but it is not a method of contraception. Ovulation can shift from cycle to cycle, so please use a proven method if you want to avoid pregnancy.

Does Lulu work with irregular periods?

Yes. Lulu learns from your own cycles instead of assuming 28 days, shows how regular you are, and has a perimenopause mode for when cycles start to change.

What can my partner see?

Your name, cycle day, phase and next period, plus today's mood, tomorrow's forecast and your fertile window only if you switch them on. Never your symptoms, notes or history. You can stop sharing any time.

Which languages does Lulu speak?

English, Italian, German, French, Spanish, Chinese, Japanese, Korean and Hindi.

Be a little kinder to yourself this cycle.

Your period, your fertile days and your moods, finally making sense.