Health logging for iOS

Log what matters.
Find your triggers.

Cauzl is a personal health logging app built for people managing chronic conditions. Track symptoms, medications, and daily events — then let the data show you what's connected.

Download on the App Store Free · iPhone · iOS 17+

Features

Tile pad

Build a pad of tiles for everything you track. One tap to log. Resize and reorder tiles in arrange mode. Each tile can have custom fields — scales, timers, dropdowns, text notes.

Timed events

Tap to start a timer for events with duration. The tile shows elapsed time with a pulsing border while it's running. Tap again to stop and fill in the details.

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Medication tracking

Set daily reminders per medication. The app badge shows overdue count. Repeat reminders until logged. Log dose, quantity, and status every time.

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Offline-first sync

Everything saves locally first. Sync to your private cloud account when connected. Log on the subway, sync when you're back online.

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Insights

Cauzl analyzes your logs to surface correlations between your tracked events and symptoms. Backed by Spearman rank correlations across a 30-day rolling window — same-day and previous-day patterns, compared against HealthKit data including sleep, HRV, steps, and more.

HealthKit · 30-day window · Lag-1 correlations

Start logging today

Cauzl is free to download on iPhone.

Download on the App Store

Questions? Contact support