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.
122 recipes and hundreds of meal ideas 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 18 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.
The largest global survey of perimenopause knowledge found a gap between what women are told to expect and what they actually report. Hot flashes are the best-known symptom. Exhaustion and fatigue are the most reported.
Read article → Hormones & BodyMost perimenopause appointments are lost to vagueness, not disagreement. Here's what to track before you go, why a single blood test rarely settles it, and how to structure the ten minutes you get.
Read article → Hormones & BodyHormone therapy use in women aged 45–54 nearly tripled between 2017 and 2026. Here's what the data actually shows, what HRT reliably fixes, and why so many women feel better on it and still feel off.
Read article →Available now on iPhone and Android.
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