Understand your cycle. Naturally.
Fiat Charting helps you track and understand your fertility and hormonal health using the Creighton Model — no hormones, no guesswork.
You've been told to just "manage it." But you want to understand what's actually happening in your body — and feel hopeful about it again.
Three simple steps
Built on the Creighton Model and aligned with NaProTechnology principles.
Chart
1
Log your daily observations in seconds with guided, easy-to-read prompts.
Understand
2
See the patterns in your cycle and learn what they mean for your health.
Act
3
Share accurate, organized data with your provider to guide real conversations.
Why Fiat Charting
"Finally, I feel like I understand my own body."
Accurate tracking
A trusted, structured method — not another generic period app.
NaPro-aligned
Grounded in a clinically recognized approach to fertility care.
Understand your body without altering it.
Fully non-hormonal
Fiat Charting is Free. Here’s Why.
Most cycle-tracking apps charge you a monthly subscription just to access your own health data. We don't think that's right.
The Creighton Model is one of the most precise, clinically validated approaches to understanding reproductive health, and the women who could benefit most from it often have no accessible way to practice it. Fiat Charting was built to change that. Charging for it would defeat the purpose.
Understanding your body shouldn't come with a price tag. So, Fiat Charting is free, no subscription, no paywall, no data sold to make up the difference. Your charting data lives on your device, syncs privately through iCloud, and never reaches us. Not because it's a feature. Because it's the only way we'd feel right about building this.
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No. Fiat Charting is a tracking and education tool, not a contraceptive and not a medical device. It helps you observe and understand your cycle using the Creighton Model. How you use that understanding, whether for achieving pregnancy, avoiding it, or monitoring your health, is between you and your healthcare provider.
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The Creighton Model is a standardized, research-based system of fertility awareness developed through decades of clinical study. Instead of estimating or predicting, it has you record real, observable signs your body gives each day. That makes it one of the most precise ways to understand your cycle, and it's the foundation Fiat Charting is built on.
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It's for anyone who wants to understand their cycle without hormones or guesswork, whether you're trying to conceive, spacing pregnancies, navigating irregular cycles, or simply want a clearer picture of your reproductive health. If you've felt let down by apps that just predict and move on, this was built for you.
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Yes. Your charting data is personal, and we treat it that way. Your information stays yours, it's never sold, and you stay in control of what you share and with whom. (You'll link this to your full privacy policy.)