Correlate - Health Insights

Correlate - Health Insights

Recovery. Strain. Sleep.

2 ratings
5 reviews
$4.99

Details

Released
January 13, 2026
Updated
October 16, 2026

Features

Correlate - Health Insights screenshot #1 for iPhone
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Correlate - Health Insights screenshot #10 for iPhone
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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

2.7.0

October 16, 2026

Correlate 2.7 connects to your Oura account, so your Oura scores arrive on their own — no more CSV exports. NEW • Connect Oura. In Data Sources, connect your Oura account once and Correlate syncs a year of readiness, sleep and activity scores, temperature deviation, nightly HRV and daily stress, then keeps them up to date when you open the app. Requires an active Oura Membership. They sit next to your Apple Health data in the Lab and Deep Dive. • Already imported an Oura CSV? Synced days extend that history instead of starting a second copy. PRIVACY • Read-only: Correlate never changes anything in Oura and never writes Oura data to Apple Health. Your Oura data goes from Oura straight to your iPhone. • Disconnect any time, and choose whether to keep or delete the Oura data in Correlate. FIXED • Swiping to delete an imported series no longer closes the app.

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User reviews

Interesting app but lack of support

Edit- this app has a wealth of data and provides a depth of information on trends and correlations that other apps just don’t have. Highly recommend

Initial review 3⭐️- This app has a great deal of data but no easy way to report bugs or issues. There is no way to contact the developer in the app at all.
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Response from developer

Thank you for this, and you're right. I should improve this. We're adding a contact option in a coming update. Until then, you can email us at davidyctseng@gmail.com and I will read it. If you tell us what went wrong, which screen it was on, and your iPhone model, we'll look into it right away. Many thanks.

Interesting app but lack of support

This app has a great deal of data but no easy way to report bugs or issues. There is no way to contact the developer in the app at all.

Great potential

I would give it four or five stars if the biological age calculations were not flawed. Currently, the weighted percentage for steps is dependent upon each day’s steps instead of an average over time. For example, after a couple hours of being up and only walking 1000 steps, the biological age says it’s close to my actual age. However, when I end up walking eight or 9000 steps like I do every day, at the end of the day, the biological age shifts to something more believable. That’s not how biological age should work. It should not be so dependent and fluctuate on your steps as you take the steps throughout the day. It should be based on average. Other than that biological age calculation flaw, if you like more metrics than you’ve seen on any app ever, then you will like this app.
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Response from developer

Hi Sandan. Thanks for the clear write-up. You’re right: biological age shouldn’t swing that hard just because steps are still accumulating mid-day. Right now that day’s steps feed the weight as they come in, so a morning with ~1k steps pulls the number older until your usual 8–9k lands. A rolling / day-average steps window for biological age is on my list. Glad the rest of the metrics are useful. Really appreciate your feedback. Email me davidyctseng@gmail.com if you have any issues further. We will try our best to improve the app. — David

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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Response from developer

Thank you. Hearing that Correlate works well with VoiceOver means a great deal to us. Your review changed the app: since version 2.5, water and nutrition come straight from Apple Health, so whatever you log in your other app is already used in your correlations, and the manual food and water logging is gone from the Dashboard. Reading the mood you record in Apple Health is coming in an upcoming update. Thank you for taking the time to tell us what was in your way. Cheers!

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.

Developer apps

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.