Coming to the App Store

Does weather make
your pain worse?

Lull tracks barometric pressure alongside your pain levels to help you find the patterns. Log entries, see correlations, and share reports with your doctor.

Download on the App Store
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Real Barometric Pressure

Reads your iPhone's built-in barometer and WeatherKit forecast data. No manual weather lookups needed.

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Pain + Weather Charts

Time series, pressure change rate, and scatter plots show whether falling pressure precedes your pain.

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Pressure Drop Alerts

Get notified when barometric pressure drops sharply — before your pain flares, not after.

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Fully Private

All your data stays on your device. No accounts. No server. No data collection. Delete the app to delete everything.

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Medication Tracking

Log medications alongside pain entries. Export combined reports to share with your healthcare team.

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Doctor-Ready Reports

Export PDF reports and CSV data. Useful for pain management appointments and specialist referrals.

Designed by a physician

Lull was built by a physician who treats patients with chronic pain conditions — not a wellness startup. The feature set reflects what actually matters in a clinical context.