Track your period, predict your cycle, and understand your body — all on your iPhone. No cloud. No account. No ads. Ever.
Built by people who believe health tracking should be private, honest, and beautiful.
A Bayesian prediction engine that learns your unique cycle pattern. It updates with every period you log and honestly tells you when it's uncertain — because your body isn't a clock.
Color-coded periods, fertile windows, and predicted ovulation — with a 6-cycle horizon. Tap any day for the full picture. The hormone curve shows you exactly where you are.
Track flow, mood, symptoms, sleep quality, energy level, and intimacy — all in seconds. Every entry stays on your device. No suggested moods. Just words for how you actually feel.
Each cycle phase comes with science-backed explanations, mood predictions, nutritional guidance, and daily tips. Ovaly tells you what's happening in your body — and what it means for how you feel.
Turn on preconception mode and Ovaly surfaces short, evidence-based notes from major health authorities — each with its source. General information to inform your questions, never a substitute for your doctor.
If you wear an Apple Watch, Ovaly turns your wrist into a cycle sensor. Everything stays on your iPhone — no signals leave your device.
Wrist temperature can indicate ovulation timing — comparable in approach to traditional basal-body-temperature tracking. HRV reveals when stress or illness might shift your cycle. Sleep data shows how each phase affects your rest.
Apple Watch Series 8 or later (and Ultra) picks up tiny temperature shifts that hint at ovulation.
HRV trends signal when stress or illness might delay your cycle.
See how each phase affects sleep quality and resting energy.
HealthKit data is read directly on-device. Nothing is uploaded — ever.
Works best with Apple Watch Series 8 or later (and Ultra). iPhone-only mode is fully supported.
Five widget families across Lock Screen and Home Screen — with a privacy mode that hides your cycle phase from anyone but you.
Bayesian inference that gets smarter with every cycle. By cycle three, it learns your personal rhythm — and tells you honestly when it's uncertain.
No cloud. No account. No analytics. No ads. Your most intimate health data never leaves your iPhone. We built it that way on purpose.
Free forever — no subscription, no in-app purchases.
In a world where health data is currency, Ovaly is built around one radical idea: we simply never see your data.
Open the app, start tracking. No email, no password, no identity.
Everything lives on your iPhone using Apple's SwiftData. Zero servers.
No Firebase, no Mixpanel, no pixels, no SDKs.
Free doesn't mean you're the product.
Built in Austria, governed by EU law.
Settings → Reset All Data. Done.
Require Face ID, Touch ID, or passcode to open Ovaly.
Replace explicit terms with neutral labels — perfect for shared screens.
Show day count only — hide the cycle phase from anyone glancing at your phone.
Late-period notifications are intentionally vague — only you know what they mean.
App Lock, Content Minimization, and Late-period reminders are independent toggles. Mix and match the privacy posture you want — for shared phones, private moments, or anything in between.
leave your phone. Ovaly has no servers, no cloud sync, no analytics. There is nothing to leave.
Hormone levels at their lowest. Your body sheds the uterine lining and resets. Rest feels right because it is.
Estrogen climbs. Energy returns. Your body prepares a follicle for ovulation — rising motivation and clarity.
A mature egg is released. Estrogen peaks. The shortest phase — just one to two days.
Progesterone rises. PMS symptoms often appear here — and Ovaly tracks them all.
Ovaly identifies your current phase and explains what's happening in your body — what to expect, what your hormones are doing, and small things that help. From day one, before you've even logged a single cycle.
Whether you scored 3/3 or 0/3 — Ovaly helps you understand your body better every day.
Get Ovaly when it launchesYes. Ovaly stores everything on your iPhone. We have no servers, no accounts, no analytics. We literally cannot see your data — by design.
They improve with every cycle. The Bayesian engine starts with population averages and adapts to your personal rhythm. For regular cycles, predictions typically land within a few days. Irregular cycles carry more uncertainty — and Ovaly tells you when it's unsure.
No. Ovaly is a wellness app, not a medical device. It must not be used to prevent pregnancy. Always consult a healthcare provider.
Wrist temperature, basal body temperature, HRV, cervical mucus quality, and ovulation test results — only with your explicit permission. iPhone-only mode is fully supported.
Go to Settings → Reset All Data. Or simply uninstall Ovaly. Nothing is on our side, so nothing remains anywhere.
Yes — the full cycle tracker is free forever. No subscription, no ads, no in-app purchases.
Yes. Settings → Privacy → App Lock. Ovaly will require Face ID, Touch ID, or your passcode every time it opens. You can also enable Content Minimization, which replaces explicit cycle terms with neutral labels everywhere — perfect for shared screens.
Ovaly arrives this summer. Free. Private. Beautiful. Drop your email and we'll let you know the moment it launches.
iPhone · iOS 17+ · English, German, Croatian
Ovaly is designed to help you understand your cycle — not to replace medical care. Predictions are informational only and must not be used as contraception. Please consult a healthcare provider for medical questions.
Ovaly is made by RKI-Benito Handels GmbH in Graz, Austria. GDPR compliance is in our DNA. Our founder has Croatian roots — that's why Ovaly ships in three languages from day one.
Read our story →