Olivia Sync
Understand your cycle. Know your body.
What it is
Olivia Sync helps you understand your body. It tracks the clinically meaningful signals of your cycle so you can recognize your fertile window, notice patterns in mood and symptoms, and make informed choices — whether you're trying to conceive, spacing pregnancies, or simply want to know yourself better. Everything stays on your device: no accounts, no ads, and nothing sent anywhere.
A look inside
What it helps with
- Recognize your fertile window and key cycle phases
- Track symptoms, mood, and energy across the month
- Spot patterns — and changes worth asking a doctor about
- Grow your body literacy to plan or prevent
The research behind it
Cycle awareness — learning to read your body's real signals — is both empowering and, done carefully, clinically meaningful. Olivia Sync focuses on the signals the evidence actually supports.
Used correctly, fertility-awareness-based methods can identify the fertile window and support family planning.
Source: Peragallo Urrutia et al. (2018), 'Effectiveness of Fertility Awareness–Based Methods,' Obstetrics & Gynecology
Greater body literacy and cycle awareness are linked to better-informed reproductive-health decisions.
Source: TODO(Chris): add preferred citation on body literacy / cycle charting
Faith & formation
Your body wasn't an accident — it was knit together with intention. Learning how it works can be an act of wonder and worship, and a place to bring hope, patience, and trust to God in every season.
“For you formed my inward parts; you knitted me together in my mother's womb. I praise you, for I am fearfully and wonderfully made.”
Scripture quotations are from the ESV.
Good to know
- Track a couple of full cycles before drawing conclusions — patterns take time.
- Bring the trends to your doctor; this is a companion, not a diagnosis.
- Your data stays on your device — there's nothing to sign up for.
Ready to try Olivia Sync?
Add it to your home screen in seconds — free, ad-free, and offline-ready.