Perimenopause does not follow a calendar. Neither should your app.
Perimenopause can start in your late 30s or 40s and last for years before your periods stop. Estrogen and progesterone swing and fall, cycles shorten, lengthen, and skip, and the symptoms pile up: disrupted sleep, night sweats, brain fog, mood changes, weight that shifts despite the same habits, and workouts that suddenly feel harder to recover from. Most apps were built for a predictable 28-day cycle, so they break exactly when you need them most.
Phaes was built for the volatility. It does not assume a tidy calendar. It reads what your body is actually doing and adapts.
What a hormone intelligence app does for perimenopause
It tracks the signals that matter
Log your symptoms, sleep, energy, and mood, and your cycle (however irregular it has become). A short daily check-in turns all of it into a personal read of where your body is today, so you can finally see the patterns instead of guessing.
It tracks your HRT in one place
If you are on hormone therapy, log your regimen, track dose and method changes over time, and check in regularly on how it is going. Everything sits alongside your symptoms, so you and your clinician can see the full picture. See running and HRT.
It turns tracking into an adaptive plan
Tracking is only useful if it changes something. Phaes pairs it with an adaptive running and strength plan that places hard work where you can recover, protects you on the weeks your body is already under strain, and prioritizes the heavy strength that protects bone and muscle as estrogen falls.
What Phaes will not do: guess your hormones from a wearable, or treat a noisy wrist signal as medical truth. Your real symptoms, your check-in, and what you actually track lead the way.
Built for the whole transition
Perimenopause is one season, and your body keeps changing. Phaes carries the same adaptive coaching all the way through. If you want the running-specific guide, see running through perimenopause. Once your periods have stopped, the menopause app and the menopause running plan pick up where this leaves off. To understand the engine underneath it all, see hormone intelligence.
What you get
- Symptom, sleep, energy, and mood tracking with your own history.
- Cycle logging that works even when your cycle is irregular.
- HRT regimen tracking, dose history, and periodic check-ins.
- An adaptive running and strength plan that responds to how you feel.
- Phase-aware and life-stage-aware nutrition guidance.
- Insights that interpret your patterns, not just chart them.
Phaes is iOS-first and integrates with Apple Health. Symptom, cycle, and HRT tracking are free. Phaes Insights, your daily read and your trends, is $3.99 per month or $29.99 per year. Phaes Coach adds the adaptive training plan and the AI coach at $9.99 per month or $69.99 per year. Your first week is free.