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
Your private period and birth control tracker
Hi, Meet Lua! Track your bleeding, understand your cycle, manage contraception, log symptoms and sex, try to conceive, or follow your pregnancy. All without handing over your most personal data.
No account · No ads · Your data stays on your device
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
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
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.
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Supplements for Menstrual Cramps: What the Evidence Actually Says
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Pregnancy week by week
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Why track your sex life? What people actually use it for
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Irregular cycles: what tracking can (and can't) tell you
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Missed a pill? What to do next, by pill type
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Fertile window estimates, not a date
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Is your period app safe? What "we protect your data" actually means
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Birth control reminder for every method
Birth control reminder apps for pill, ring, patch, shot, and IUD need method-specific logic —...
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A period tracker with no account: why the sign-up screen is the weakest link
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Ring reminder for your vaginal ring schedule
Three weeks in, one week out. A ring reminder helps when the schedule is simple on paper and easy ...
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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 analytics, no tracking, and no advertising anywhere in the app. 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. You can connect Apple Health to import up to the last 12 months of period entries, and to save the periods you log in Lua back to Health. It stays off until you turn it on, it only ever exchanges menstrual flow, and your symptoms, notes and sex logs are never written to Health.
Is Lua free?
Lua is free to download, with no ads. Tracking your cycle, contraception, sex life, and pregnancy on your phone is included. Lua+ is optional: it unlocks reminders for every method and full cycle stats, billed by Apple as a monthly or yearly subscription (the yearly plan may include a free trial). You manage or cancel in your Apple Account settings. Deleting the app does not cancel a subscription. Details are in our terms.