# Causal

Causal is a privacy-first iOS personal wellness app that combines read-only Apple Health biometrics with short check-ins to help users explore possible wellness patterns.

## What Causal Does

- Connects passive Apple Health signals with active micro check-ins.
- Helps users explore what may affect sleep, HRV, mood, recovery, and resting heart rate.
- Uses short prompts instead of long manual diaries.
- Respects waking hours and aims to avoid notification fatigue.
- Frames insights as personal wellness signals, not medical advice.

## Current Signals

Current passive metrics include read-only Apple Health sleep duration, HRV, resting heart rate, and workout duration when permission is granted.

Active check-ins can include mood, caffeine, alcohol, sugar, stress, socializing, and workouts.

## Privacy

Causal does not use health data, HealthKit data, biometrics, or check-in answers for ads, marketing, resale, or unrelated profiling.

## Important Limits

Causal is not a medical device and does not diagnose, treat, cure, mitigate, or prevent disease.

## Canonical Page

https://causal.fitness/