Join the waitlist
Join the waitlist
Adaptive macro tracking for active women in perimenopause. Grounded in female physiology, built on research by a scientist living it too.
Register your interestSérénité Active · M Deats Wellness
Traditional calorie trackers were never built for perimenopause. They don't account for post-ovulation energy spikes, or the fact that chronic deficits drive cortisol up and metabolic rate down. Your hormones are learning to read that data through a new physiological lens.
Cycle apps track your period. Calorie apps track your plate. Nothing bridges the gap between them — until now.
Rest and fuel — both count
Today’s targets, met — not chased
Every phase, logged in one view
Guidance that changes with your phase
Sérénité Active calculates your daily fuel and macros from your true physiology — then adapts them within a research-backed range of −150 to +250 calories as your body gives feedback. Choose your calculation model, sync your training, and decide whether workout calories join your day or rest as recovery data.
Macros that align with a body that is in flux, and with how you feel on the day.
Targets recalibrate as your metabolism shifts — within a scientifically supported range, never a crash. Three setup models mean the numbers start from your body.
A global barcode scanner. An AI recipe parser that logs a pasted recipe in seconds. Fiber and energy-availability guardrails that quietly protect you from under-fuelling.
Training and recovery guidance tuned to your current phase — follicular energy is not luteal energy. Every recommendation explained.
Built by a qualified nutritional scientist, cited to published research, and funded by no one whose interests aren't yours.
Most apps ask for your blind trust. We’d rather earn it. Every formula in Sérénité Active is drawn from published female clinical research, cited transparently inside the app, and explained in plain language.
Here is a preview of the science driving your sanctuary.
Explore the science
For 7 years I've worked one-on-one with perimenopausal and cycling women through the Sérénité program — reading blood work, building individual protocols, tracking what works. But I could only ever reach six to eight women a year.
Sérénité Active is that same science, encoded. Every formula referenced. Every recommendation explained. Built by an Honours-qualified nutritional scientist who spends her weekends on trails and gravel roads — and is navigating perimenopause herself.
Mikaela Nell · Founder · Nutritional Scientist, BSc Hons
No advertisers, no data brokers. There are no ads in the app, and there never will be.
Remove your account and every trace of your data — permanently, whenever you choose.
We collect only what the calculations need, encrypted in transit and at rest.
Sérénité Active is in beta — built carefully, without investor pressure, which means early members genuinely influence the product. Founding access, honest build updates, first invitation when doors open.
No spam, no daily emails — just real updates from a real person.