# Petala: Cycle & Pregnancy Canonical: https://sakura5.app/petala/ Updated: 2026-11-08 Publisher: Sakura5 (https://sakura5.app) · support@sakura5.app > **Quick answer:** 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. ## Facts - Made by: Sakura5 - Platforms: iPhone (iOS) - Status: available on the App Store - Pricing: Petala is free to download on the App Store, with an optional Petala Pro subscription billed through your Apple ID. - App Store: https://sakura5.app/go/petala?from=/petala/ - Privacy: https://sakura5.app/petala/privacy · Terms: https://sakura5.app/petala/terms · Support: https://sakura5.app/petala/support ## What it does - **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 1. **Log your cycle** — Add your last period and a few details — it takes seconds. 2. **See what's next** — Petala predicts your period, fertile window, and ovulation day. 3. **Follow your journey** — Switch to TTC or pregnancy mode and track every week as it comes. ## Privacy Petala is built by Sakura5 and designed so your most personal data never leaves your iPhone. There is no account, no sign-up, and no Petala server that stores your health information. Everything you log — periods, symptoms, fertility notes, pregnancy details — is saved locally on your device (and only in your own private iCloud backup, if you have iPhone backups enabled). - Cycle, fertility and pregnancy data you enter — stored only on your device. We never receive it, and it is never uploaded to us. - Reminders you enable — scheduled as local notifications on your device. - Purchase status — to unlock and restore your subscription. ## FAQ **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 - [How to Calculate Your Due Date From Your Last Period](https://sakura5.app/blog/how-to-calculate-due-date/) (2026-11-08) — 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](https://sakura5.app/blog/how-to-calculate-your-fertile-window/) (2026-11-08) — 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](https://sakura5.app/blog/irregular-periods-causes-and-tracking/) (2026-11-08) — 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](https://sakura5.app/blog/period-tracker-app-privacy/) (2026-11-08) — 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](https://sakura5.app/blog/when-to-take-a-pregnancy-test/) (2026-11-08) — 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.