See your menopause clearly.

Calla is the calm, private menopause and HRT diary: a 20-second daily check-in, HRT reminders with patch-site rotation, honest before-and-after trends, and a one-page report for your GP or doctor. No account needed. No ads.

Private by design. Your diary lives on your phone. Nothing is uploaded unless you choose to sign in for backup. We never sell data and never show ads.

Calla is a personal diary. It does not diagnose, treat or give medical advice, and comparisons show patterns in your own entries only. Always discuss symptoms and treatment with your GP, doctor or healthcare professional.