---
title: "Correlate - Health Insights - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Recovery. Strain. Sleep. Readiness — from the Apple Watch you already wear.  Correlate turns your Apple Health data into the daily recovery, strain and sleep scores you'd expect from a dedicated fitne"
---

# Correlate - Health Insights — United States
> Recovery. Strain. Sleep.

![Correlate App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/0d/88/ef/0d88ef48-76a9-d49d-9e1e-588ec6c7e2c0/AppIcon-0-0-1x_U007emarketing-0-7-0-85-220.png/434x0w.png)

**Developer:** [David Tseng](https://apptail.io/developer/david-tseng-bGVs) (Taiwan)
**Category:** Health Fitness
**Rating:** 4.0/5 (2 ratings)
**Price:** $4.99
**Bundle ID:** com.bluehatstudio.correlate
**Store:** Apple App Store
**Country:** United States
**Version:** 2.7.0 (released 2026-10-16)
**Original Release:** 2026-01-13
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6757488839)
**AppTail Page:** [https://apptail.io/app/correlate-health-insights-Qmgy/united-states](https://apptail.io/app/correlate-health-insights-Qmgy/united-states)

## Correlate Description
Recovery. Strain. Sleep. Readiness — from the Apple Watch you already wear.

Correlate turns your Apple Health data into the daily recovery, strain and sleep scores you'd expect from a dedicated fitness band or smart ring — with no extra hardware to buy, no monthly subscription, and your health data never leaving your iPhone.

◈ YOUR DAILY READINESS
One verdict each morning: push today, or back off and recover.
• Recovery, Strain & Sleep — three scores, one glance
• Health Score that shows what went into it
• Stress Load, daily energy, HRV resilience & Biological Age
• Sleep stages (REM, Deep, Core), sleep debt and consistency

◈ ALREADY WEAR A RING OR A STRAP? BRING IT ALL TOGETHER
• Connect your Oura account (Oura Membership required) to sync readiness, sleep and activity scores automatically — read-only, straight to your iPhone
• Or import Oura and WHOOP official exports, parsed entirely on-device
• Garmin and other watches that sync to Apple Health are picked up automatically
• One place for every source and every score, and your history stays yours if you ever cancel a membership

◈ FIND WHAT ACTUALLY MOVES YOUR NUMBERS
Does late caffeine wreck your sleep? Does a hard run lift tomorrow's HRV?
• A 20-second daily journal: a few yes/no questions you chose
• With vs. Without: how your recovery really looked on days you did a habit vs. days you didn't
• Auto-Discovery scans for real correlations (Pearson r), including delayed effects up to 7 days out — labeled as patterns, never as proof

◈ BUILT FOR PEOPLE WHO READ THE NUMBERS
• Pro-grade stats: median, standard deviation, variability, trends and outliers
• Dual-axis charts and scatter plots you can interrogate
• A plain-English coach that shows its work, generated on your iPhone

◈ NO SUBSCRIPTION. NO NEW WEARABLE. TOTAL PRIVACY.
• One-time purchase — no monthly fees, ever
• Works with the Apple Watch and iPhone you already own
• 100% on-device analysis — no account, and your health data never leaves your phone. Usage statistics can be turned off in settings.

Stop renting your health insights. Own them.

Requires an iPhone with Apple Health data. An Apple Watch is recommended for recovery, strain, heart-rate and sleep metrics.

## Correlate Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e7/90/2e/e7902e7d-2a55-fd80-367d-d10af0334ab8/6.9-01-cover-promise.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/d1/e4/d7/d1e4d76e-5dbd-53d1-f684-24f7f945369f/6.9-02-cover-tiles.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/9c/94/68/9c94684c-3865-024d-f802-8ac988d9b04b/6.9-03-cover-oura.png/1320x2868.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/e2/94/e2/e294e2fd-9dec-f92d-a668-c1f62a9fb4e2/6.9-04-journal.png/1320x2868.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/34/c0/0e/34c00e97-1b78-1947-f76f-04de97f9ba42/6.9-05-discover.png/1320x2868.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/5c/48/8f/5c488f18-dc6c-87a0-52a1-070dd6216e48/6.9-06-correlator.png/1320x2868.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/59/dd/9c/59dd9c23-e3c7-e10a-739f-67c2aa6b6e95/6.9-07-strain.png/1320x2868.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/d6/b7/58/d6b7589a-5835-92b9-6353-8bb4dba8d62e/6.9-08-activity.png/1320x2868.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/63/2f/ee/632fee95-55f7-f616-19ef-a6a5ed31fb2e/6.9-09-sleep-stages.png/1320x2868.png)
- [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/32/9d/c9/329dc926-d2eb-e82d-545f-fab31756fa8f/6.9-10-scatter-overlay.png/1320x2868.png)

## Correlate Rating Breakdown in United States
- 5 stars: 1 (50%)
- 4 stars: 0 (0%)
- 3 stars: 1 (50%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## Correlate Reviews in United States

### ***** "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.
-- Earlysleeper, 2026-03-17

[View all Correlate reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## Correlate Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | United States | Health Fitness | #129 |
| Top Paid | Romania | Health Fitness | #146 |
| Top Paid | Philippines | Health Fitness | #221 |


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## Correlate Available In
- [United States](https://apptail.io/app/correlate-health-insights-Qmgy/united-states)
- [Taiwan](https://apptail.io/app/correlate-health-insights-Qmgy/taiwan)
- [Ireland](https://apptail.io/app/correlate-health-insights-Qmgy/ireland)
- [China](https://apptail.io/app/correlate-health-insights-Qmgy/china)
- [Russia](https://apptail.io/app/correlate-health-insights-Qmgy/russia)
- [Italy](https://apptail.io/app/correlate-health-insights-Qmgy/italy)
- [Finland](https://apptail.io/app/correlate-health-insights-Qmgy/finland)

---

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