РО: Baro Diary

Do you feel worse when the weather changes? You're not imagining it — but can you prove it? Pressure Observer is a calm, minimal diary for people who suspect that atmospheric pressure influences their wellbeing. In just a few seconds a day, you log how you feel and let the app do the science. How it works Open the app once a day and answer one question: "How do you feel today?" — Good or Not Great. Pressure Observer immediately fetches real-time weather data for your location: barometric pressure (hPa or mmHg), temperature, humidity, and the 3-hour pressure trend — rising, falling, or stable. After 7 daily check-ins, the app calculates the Pearson correlation coefficient between your mood scores and average atmospheric pressure and delivers your personal verdict: No correlation, Weak, Moderate, or Strong. What you'll discover in History

Mood vs. Pressure chart over 7, 30, or 90 days Color-coded mood calendar at a glance Comparative stats: average pressure, temperature, and humidity on your good days vs. your not-great days The exact conditions where you historically feel your best

Designed for everyday use No account required. No subscription. No complicated forms. Just one tap, once a day. Your data stays on your device — private and secure. Whether you're curious, skeptical, or already convinced that low pressure ruins your day, Pressure Observer gives you the data to find out — about yourself.