Understand what's happening in your body and mind. See the patterns your GP needs to see. Built by a scientist going through it too.
80+ hormone therapies including cycle-based progesterone. Smart reminders so you never miss a dose.
Physical symptoms, mood, sleep, energy, cognition, period, diet. Log in seconds, see the full picture.
Timeline view reveals connections between your symptoms, medications, and lifestyle over weeks and months.
A guided check-in helps you make sense of what you're noticing — the mood, energy, sleep and cycle changes commonly linked to perimenopause and menopause — and points you toward a conversation with your GP. It doesn't diagnose; only a clinician can do that.
Your health data stays on your device. No ads, no data selling, no third-party sharing.
Built by a scientist navigating perimenopause. Grounded in clinical guidelines, not trends.
"I built Crest because I couldn't find a tool that did what I needed: track my HRT properly, understand my patterns, and feel less alone in it."
Dr Clair Stark
Scientist, founder, and going through it too
Watch: IWD 2026 interview →Free to download. Your body, your data, your patterns.
Built in Sydney 🇦🇺