Your cycle, entirely yours
Petala is a period, ovulation and pregnancy tracker that keeps every health detail on your iPhone. It's made for anyone tracking their cycle, trying to conceive, or following a pregnancy week by week, on iPhone. Petala is free to download on the App Store, with an optional Petala Pro subscription billed through your Apple ID.
Petala predicts your period and ovulation, guides you while you're trying to conceive, and walks you week by week through pregnancy — with every health detail kept on your iPhone.
Download on the App Storefree to tryiPhone · All health data stays on your device · No account, no ads
What it does
Everything you need, nothing you don't.
Period & ovulation predictions
Log a few cycles and Petala learns your rhythm — your next period, fertile window, and ovulation day, always a tap away.
Trying to conceive
A dedicated TTC mode with daily conception odds, fertile-window insights, and gentle nudges on the days that matter most.
Week-by-week pregnancy
Follow all 42 weeks with what's happening each week, plus animated baby-size comparisons in three playful themes — fruit & veg, cute animals, or sweet treats.
Daily health advice
Nutrition, exercise, sleep, and self-care tips that change every day — tailored to your cycle phase, your TTC months, or your pregnancy week.
Locked behind Face ID
Turn on Face ID or Touch ID so your cycle and pregnancy details stay private, even if someone else picks up your phone.
Nothing leaves your iPhone
No account, no cloud profile, no ads, no data sold — your health history is written to your device and stays there.
How it works
Log your cycle
Add your last period and a few details — it takes seconds.
See what's next
Petala predicts your period, fertile window, and ovulation day.
Follow your journey
Switch to TTC or pregnancy mode and track every week as it comes.
Petala FAQ
Straight answers about price, devices and privacy.
Where is my health data stored?
Only on your iPhone. Petala has no account and no server that stores health information; cycle, fertility and pregnancy details are written to your device and never uploaded to us.
Does Petala need an internet connection?
No. Tracking your cycle or your pregnancy works without a connection.
Can I lock Petala?
Yes. Turn on Face ID or Touch ID so your details stay private even if someone else picks up your phone.
Where can I get Petala?
Petala is available now on the App Store for iPhone. It is free to download, with an optional Petala Pro subscription; the App Store shows the current price before you confirm.
Who makes Petala?
Petala is made by Sakura5, an independent app studio that builds focused, privacy-first apps for iPhone, iPad and Mac. Support: support@sakura5.app.
From the blog
Guides and tips related to Petala.
How to Calculate Your Due Date From Your Last Period
How to calculate your due date with Naegele's rule, adjust for cycle length, conception or IVF dates, and why your first scan may change it. ACOG and NHS sourced.
How to Calculate Your Fertile Window From Your Cycle
How to calculate your fertile window: estimate ovulation from your cycle length, mark the six fertile days, and narrow it with body signs. ACOG and NHS sourced.
Irregular Periods: Causes, Tracking and When to See a Doctor
What counts as irregular periods, the common causes, warning signs that need a doctor, and exactly what to track before your appointment. NHS and ACOG sourced.
Period Tracker App Privacy: A Checklist Before You Log
Period tracker app privacy explained: where cycle data goes, a 7-point checklist for any app, and phone settings that matter. Includes the FTC's Flo Health case.
When to Take a Pregnancy Test for an Accurate Result
When to take a pregnancy test: from the first day of a missed period, or 21 days after unprotected sex. How tests work, early results, and retesting, NHS sourced.
Ready when you are
Get Petala on your iPhone today.
Download on the App StoreSupport · Privacy · Terms · More Sakura5 apps