Your private period and birth control tracker

Hi, meet Lua 💜 Track your period, understand your cycle, manage contraception, and follow your journey to pregnancy. Simple, private, and made for women.

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No account · No ads · Your data stays on your device

Privacy by design

No account. Health logs never leave the iPhone.

Free everyday log

Period and bleeding, sex, symptoms, and mood are in the free version, with no upgrade screen when you save.

Contraception reminders

For the pill / ring / patch / shot / IUD, notifications that work even offline.

Built for where you are now and what comes next.

Your reproductive health changes throughout life. Lua adapts with you, keeping your history and insights together as your needs evolve. No separate period app. No separate pill reminder. No separate fertility tracker. Just one private home for the information that matters to you.

How does it help you

Discover what you can do with Lua

Understand your cycle

See where you are today, when your next period may begin and how regular your cycles are over time.

  • Period predictions
  • Bleeding and flow tracking
  • Cycle-phase overview
  • Cycle length and regularity
  • Personal history

Learn what is normal for you

Log symptoms, mood and energy in seconds. Over time, Lua helps you see the patterns behind how you feel.

  • Cramps, bloating, headaches and other symptoms
  • Mood and energy check-ins
  • Sex and intimacy logs
  • Personal notes
  • One chronological health timeline

Your contraception, on schedule

Track the method you use and the actions it requires, without relying on memory or a generic calendar reminder.

  • Pill reminders
  • Patch replacement schedules
  • Vaginal-ring insertion and removal
  • Shot schedules
  • IUD and implant records
  • Custom timing and breaks

Ready to try? Lua changes with you.

Turn on Trying to Conceive mode to highlight predicted fertile days, log temperature, mucus, and OPKs, and see a confidence score for ovulation.

  • Fertile-window estimates
  • Basal temperature tracker
  • Cervical mucus tracker
  • OPK tracker
  • Confidence in ovulation

From cycle tracking to pregnancy tracking

When you become pregnant, switch modes without leaving your history behind. Follow your pregnancy week by week in the same private app.

  • Pregnancy-week tracking
  • Cycle predictions paused automatically
  • Personal logs and history retained
  • One continuous health record

The app you used while trying can stay with you when everything changes.

Your reproductive health is nobody else’s business.

Lua is designed around one simple principle: deeply personal information should remain personal.

  • No account required
  • Your data stays on your device
  • Face ID protection
  • No advertising
  • No selling your health history
  • Clear controls over your information

What Lua users say

Real reviews from women using Lua.

So happy to have found this app!!

Super intuitive and easy to use. I love how it easily shows me the history of my period symptoms and logs to easily spot patterns in my moods/energy. Highly recommend!

Mich13vdl

Works with irregular cycle

I have PCOS and this is helping me predict my cycle and ovulation window with a high level of accuracy. Really recommend it!

Swadref

This is awesome!

Love that nobody’s taking my data!

kituuuuungggf

Simple and Practical

Lua is a practical and easy-to-use app for everyday life. The information is clear and easy to find, making it simple to see what matters most.

Tay Cándido

Awesome!!!

Best looking app I’ve found 🙏❤️❤️

Joanne24678

One app for your cycle, contraception, fertility and pregnancy.

Private, flexible and designed to adapt with you.

From the blog

Private tracking, contraception reminders, and the quiet details of keeping your data on your phone.

Read the blog

Frequently asked questions

The things people ask us most.

Is my data really private?

Yes, and not as a promise we could quietly change. Lua has no servers and no backend, so everything you log is written to private storage on your own phone and stays there. We cannot read it, because it never reaches us. There is no advertising in the app. The app sends anonymous usage analytics through PostHog, like which features are used; it is tied to a random device ID, not your name, email or account. You can also turn on a Face ID lock so nobody else can open it.

Do I need to create an account?

No. There is no sign-up, no email, and no password. You open Lua and start using it. Nothing to verify, nothing to remember, and no profile sitting on a server somewhere waiting to be breached.

Can I use Lua as my birth control?

No. Lua is not a contraceptive and has no contraceptive effect. It helps you keep the method you already use on schedule (pill reminders, ring and patch changes, injection dates, IUD and implant records), but it cannot prevent pregnancy, and a reminder can be missed if your phone is off or notifications are disabled. Always follow your prescriber’s instructions.

What happens if I lose my phone or get a new one?

Because your data lives only on your device, we have no copy to restore it from. Backing up your phone through Apple or Google is what carries your history across to a new device. This is the honest trade-off of a private-by-default app: no cloud copy means there is nothing to leak, but also nothing for us to recover.

Does Lua work with Apple Health?

If you want it to. Apple Health stays off until you turn it on. When you connect, Lua can read up to 12 months of past periods, basal body temperature and HRV from Health, and writes back only the periods you log in Lua. Your symptoms and sex logs are never written to Health.

Is Lua free?

Lua is free to download, with no ads. The free version covers the calendar, period predictions and cycle insights, logging your period and sex, the daily check-in for symptoms, mood and energy, and reminders for your expected period and the daily check-in. Lua+ adds the pill, patch, ring, shot, IUD and implant screens and their reminders, trying to conceive and pregnancy modes (temperature, mucus and ovulation tests, kicks and contractions), the next-period confidence detail, all Stats cards, and PDF export. Lua+ is a monthly or yearly subscription billed by Apple, and you can cancel any time in your Apple Account subscription settings. Deleting the app does not cancel a subscription. Details are in our terms.