The perimenopause app that adapts what you eat, when you fast, and how you move — to where your body actually is in your cycle.
During perimenopause, your hormones don't just decline — they fluctuate in a repeating monthly pattern. Most wellness advice ignores this entirely. Eat 1,400 calories. Fast 16 hours. Do HIIT five times a week. But your body doesn't work on a flat schedule. The women who feel best during this transition aren't doing more — they're matching what they do to where they are in their cycle.
PeriFlow calculates your current phase from your cycle data and adapts everything — what you eat, how you fast, how you move — to match what your hormones may need today.
Your metabolism is naturally flexible. Many women find this is when fasting feels most comfortable — a 12–16 hour overnight window is worth exploring if your energy feels steady. This is the phase where strength training and higher-intensity workouts tend to work with your hormones, not against them.
The brief peak. Your hormones are working hard and your body is using energy to manage the surge. This isn't the moment to push fasting further — a comfortable 12–14 hours is plenty. Many women notice sharper thinking and more energy.
Progesterone needs glucose to function — your body genuinely requires more food right now. Three nourishing meals with complex carbohydrates stabilise blood sugar and directly support the hormones managing your symptoms. Fasting here works against you.
Not a period tracker with a wellness coat of paint. A complete daily system that adapts to your cycle, your diet, and your body.
Hundreds of meals across 7 diet styles. Every suggestion includes "why this meal?" — connecting ingredients to your hormones today.
Your fasting window adjusts by phase. Built-in protection during Root ensures you never accidentally fast when your body needs fuel.
Energy, hot flashes, sleep, brain fog, anxiety, and 17 more — with sparklines, heatmaps, and patterns that become visible over time.
Designed for irregular cycles. Period prediction windows based on your range, not a single date.
Log your meals and symptoms, and PeriFlow surfaces what's actually driving your best days — and your worst.
Generate a formatted report with symptom trends and meal logs — so your healthcare provider sees real data.
Every screen adapts to your phase — meals, fasting windows, and your cycle calendar shift as your hormones do.
You're trusting PeriFlow with intimate health data. Here's how we treat it.
In transit and at rest — always.
Your data lives on servers in Ireland.
No ads, no data brokers, no sharing with advertisers.
Remove your account and every trace of your data, right in the app.
The full detail — what we store, why, and your rights — is in the Privacy Policy.
One month in on the App Store — here's the first review, verbatim.
I find it super helpful to know what I should eat, how to exercise and when to fast in each stage of my cycle. I love the recipe feature, it's so easy to plan my shopping list. I don't have lower back pain anymore and my night sweats are almost gone.
Read on the App Store, or add your own once you've used PeriFlow for a week.
Phase tracking, cycle calendar, and symptom journal are always free. Unlock the full app with a 7-day trial then your choice of plan.
7-day free trial · Cancel anytime in your device's subscription settings
Prices shown in USD. Local pricing is set by the App Store and Google Play and may vary by country.
Apple's iOS 27 can now flag perimenopause from your cycle data. That's a powerful first step — but detection is just the beginning. Here's what actually helps once you know.
Read article → Hormones & BodyEstrogen patches are in short supply worldwide, with no clear end in sight. Here's what's driving the shortage, what it means for women in perimenopause, and the evidence-based nutrition strategies that support your body right now.
Read article → Intermittent FastingFasting raises cortisol — and in perimenopause, your stress response is already amplified. Learn why timing your fast to your cycle phase protects your hormones instead of disrupting them.
Read article →Available now on iPhone and Android.
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