Correlate - Health Insights

Correlate - Health Insights

Insights from Apple Health.

1 ratings
2 reviews
$4.99

Details

  • Released
  • Updated
  • January 13, 2026
  • September 3, 2026

Features

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About

Visualize your health data to uncover hidden connections between different metrics. Understand how your habits impact your body's performance and recovery with advanced statistics and predictive insights, all processed locally on your device.

Discover correlations in health data
Visualize trends with dual-axis charts
Deep dive statistics (Standard Deviation, CV)
Health Score and predictive insights
Trend alerts for metric deviations
Local-first data processing
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What's New in Correlate

2.4.1

September 3, 2026

Sleep fixes, prompted by a reader who noticed Correlate had stopped seeing their sleep stages. • If two apps write sleep for the same night, the one that recorded your stages now wins. Before, a sleep app logging one long "asleep" block could out-rank your watch's REM, deep and core — and the night showed as 100% Core with a quality score stuck at 45. • Bedtime and wake time now come from the same source and the same night. Falling asleep before midnight no longer produces a phantom late-evening "wake", and an afternoon nap no longer stands in for bedtime — so Sleep Consistency and your circadian profile read your actual schedule. • Sleep Consistency no longer drops to zero over a single odd night. A red-eye or a sick-day catch-up sleep is left out of the spread, and the card says when that happened.

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User reviews

amazing app with just one annoyance

Best App ever. Cheep, no account needed, great with VoiceOver which I need since I am blind, I tried many similar Apps and no app comes close to that. But why do I manually have to logg nutritional data and water? Seriously I logg it with another app into apple health already. I'd love it if these data get drawn from health too. Same as the mood journal though I'm okay with the in-app-mood-journal. And most foods aren't even available in the in-app-tracking of foods. That's the only annoyance.
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Very comprehensive

I am a Whoop and Oura users. It’s basically combine the both advanced chart and only read data from Apple Health. It’s a great fit to use this along with with any wearable device that write data into Apple Health.

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FAQ

What is Correlate?

Correlate is a health and fitness app that visualizes your data from Apple Health to reveal cause-and-effect relationships between different physiological metrics. It helps you understand how your habits impact your body's performance and recovery.

How does Correlate use my Apple Health data?

Correlate reads directly from Apple Health (HealthKit) to analyze your physiological data. It focuses on discovering correlations and trends, offering advanced statistics and predictive insights without uploading your data to the cloud.

Is Correlate free to use?

Yes, Correlate is available for free. There are no in-app purchases or subscription fees required to access its features.

Does Correlate have ads?

No, Correlate is ad-free. The app prioritizes user privacy and a clean experience, meaning you won't encounter any advertisements while using it.

What kind of correlations can Correlate find?

Correlate automatically scans your data to find significant positive or negative correlations, such as how caffeine affects sleep latency or if running impacts HRV. It uses dual-axis charts to visualize how two metrics interact over time.

What advanced statistics does Correlate offer?

Correlate provides professional-grade metrics including Standard Deviation, Median, Variability (CV), and Range. It also helps identify outliers and long-term baselines within your health data.

What devices does Correlate support?

Correlate requires an iPhone with Apple Health data. It is designed to run locally on your device for maximum privacy and performance.

How often is Correlate updated?

The latest version of Correlate is 1.5, which was last updated on April 14, 2026. Updates typically bring new features, performance improvements, and bug fixes.