# Correlate - Health Insights — Insights from Apple Health. > Visualize and analyze health data from Apple Health to find correlations. (iPhone/iPad app by INJAY.) - Source: https://appshunter.io/ios/app/correlate-health-insights/id6757488839 (this page in markdown: same URL + `.md`) - Developer: [INJAY](https://appshunter.io/developer/529429990) - Category: Health & Fitness, Utilities - Price: $4.99 - Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 18 · 10 MB - Languages: American English - Released: 2026-01-13 - Data updated: 2026-08-19 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/correlate-health-insights/id6757488839/reviews.md ## What is Correlate? Recovery. Strain. Sleep. Readiness — from the Apple Watch you already wear. Correlate turns your Apple Health data into the daily readiness, recovery, and strain scores you'd expect from a dedicated fitness band or smart ring — with no extra hardware to buy, no monthly subscription, and nothing ever leaving your iPhone. If you've wanted a recovery wearable but not the price tag or the never-ending membership fees, your Apple Watch already captures what you need. Correlate does the rest. ◈ YOUR DAILY READINESS A single glance tells you whether to push hard today or back off and recover. • Recovery, Strain & Sleep rings • Health Score — one number for how your body is trending • Body Battery, Stress Load, Daylight & Biological Age ◈ SLEEP, DECODED • REM, Deep & Core stages • Sleep debt and how last night compares to your ideal ◈ FIND WHAT ACTUALLY MOVES YOUR HEALTH Does late caffeine wreck your sleep? Does a hard run lift tomorrow's HRV? • Auto-Discovery scans your data for real correlations (Pearson r) • Delayed effects caught automatically — up to 7-day lags • Dual-axis charts plus pro-grade stats: median, standard deviation, variability, trends and outliers ◈ BRING YOUR OURA & WHOOP DATA Already wear a ring or a strap? Import their official exports — no account linking, parsed entirely on-device. • Oura Readiness, Sleep & temperature; WHOOP Recovery, Strain, HRV & journal • With vs. Without: how your metrics really looked on days you did a habit vs. days you didn't • Highlight behavior days right on the scatter chart ◈ YOUR ON-DEVICE COACH • A daily briefing, plain-English Q&A, and personalized insights — generated entirely 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 — no accounts, no cloud uploads, no tracking. Your health data never leaves your phone. 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. ## Key features - 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 ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/correlate-health-insights/id6757488839/reviews.md ### 5/5 — amazing app with just one annoyance *2026-07-12* 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. ### 5/5 — Very comprehensive *2026-03-17* 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. ## Frequently asked questions about Correlate ### 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. ## Version history (last 5 releases) ### 2.3.1 — 2026-07-17 A sharper, more consistent look — and a Weekly Digest that gets to the point. • A refreshed design language: one accent system across every screen — green for your body, blue for actions — with unified cards, cleaner typography, and color-coded metric categories in Deep Dive. • Correlator, refined: the X and Y axis pickers now carry the app's signature colors, and the date range (7 days to 1 year) moved out of a hidden menu into one-tap chips right above the chart. • Weekly Digest, redesigned: it now opens with the conclusion — how many metrics improved, what needs attention — with week-over-week comparison bars for every metric. • Fairer trend colors: improvements are judged by what's actually good for each metric. A falling resting heart rate now correctly shows as progress, not decline. • Under the hood: cleanup and stability improvements. All on-device, all included in the one-time purchase — no subscription, ever. ### 2.3 — 2026-07-16 A sharper, more consistent look — and a Weekly Digest that gets to the point. • A refreshed design language: one accent system across every screen — green for your body, blue for actions — with unified cards, cleaner typography, and color-coded metric categories in Deep Dive. • Correlator, refined: the X and Y axis pickers now carry the app's signature colors, and the date range (7 days to 1 year) moved out of a hidden menu into one-tap chips right above the chart. • Weekly Digest, redesigned: it now opens with the conclusion — how many metrics improved, what needs attention — with week-over-week comparison bars for every metric. • Fairer trend colors: improvements are judged by what's actually good for each metric. A falling resting heart rate now correctly shows as progress, not decline. • Under the hood: cleanup and stability improvements. All on-device, all included in the one-time purchase — no subscription, ever. ### 2.2 — 2026-07-11 A daily habit journal, answers in your own words, and a brand-new look. • Daily Journal: track habits like alcohol, caffeine, workouts, or screen time with quick Yes/No check-ins — editable presets plus your own custom habits, with back-fill for the last two weeks. Every answer feeds straight into your correlations, the With vs. Without card, Coach insights, Discover, and your weekly digest. • Ask Your Data: tap a question — "Does one thing affect another?", "What affects my sleep?", "Did something change recently?" — and Correlate builds the analysis for you: verdict in plain language, the numbers behind it, and an honest note when there isn't enough data yet. You can also just type the question in your own words. • Coach answers, restructured: every answer now shows Your Data (with the exact figures), What Science Says, and Try This — so you always see why a suggestion was made. • Habit insights: once you've logged a habit for 5+ days each way, Correlate shows how your recovery, sleep, HRV, or steps really differ on those days — effect sizes included, honestly labeled as patterns, not proof. • A new icon and a sharper look: the X × Y mark, a unified accent color, and full support for iOS dark and tinted icon styles. • Fairer scores: an ordinary day now reads as a good day. We recalibrated Health Score and sleep quality around your personal baseline, stopped punishing brief nighttime stirrings the watch over-counts, and added a percentile line so you always know what your number means. All on-device, all included in the one-time purchase — no subscription, ever. ### 2.1 — 2026-07-11 Your wearable's scores, correlated — and insights that find you. • Import your Oura & WHOOP data (Oura Trends CSV, or the WHOOP export .zip as-is — no unzipping). Recovery, Readiness, Day Strain, HRV, skin temperature and more line up right next to your Apple Health metrics. Parsed 100% on your iPhone. • Correlate anything against anything: imported scores work on either axis, in Auto-Discover, the correlation matrix, causality, and Deep Dive. • See what your habits actually do: import your WHOOP journal and a With vs. Without card compares your recovery, sleep, or HRV on the days you did vs. didn't — you can even highlight those days right on the scatter chart. • Delayed effects, caught: Correlate quietly scans delays of up to a week and offers a one-tap suggestion when a lag tells a stronger story. • New Sleep Consistency score — how steady your bed and wake times are — on the Dashboard, the Sleep view, Discover, and your weekly digest. • Coach now spots behavior patterns for you, honestly labeled as patterns, not proof. • Export Everything: your whole history — every metric and imported series — in one CSV. • Optional new-discovery alerts (off by default, computed entirely on-device). • Charts explain themselves with a tap, trends scrub back through past days, and significance labels are now backed by exact statistics. Thanks for using Correlate! ### 1.8 — 2026-06-21 • Slide to inspect — drag your finger across any trend chart to read the exact value and date at each point. Now on every chart in the app. • More accurate sleep duration — if you use more than one sleep tracker, or sleep past midnight and into the morning, Correlate now picks your most complete source for each night and counts the full night. Totals that looked too low are now correct. Thanks for using Correlate! ## Apps similar to Correlate | App | Rating | Price | Category | | --- | --- | --- | --- | | [Cyclus : PCOS Weight Loss](https://appshunter.io/ios/app/cyclus-pcos-weight-loss/id6761624125) | 5.0 (1) | Free | Health & Fitness | | [Workout Transferer](https://appshunter.io/ios/app/workout-transferer/id1612651660) | — | Free | Health & Fitness | | [Food Symptom Detective](https://appshunter.io/ios/app/food-symptom-detective/id6760271034) | — | Free | Health & Fitness | | [4Sight Fit](https://appshunter.io/ios/app/4sight-fit/id6759586315) | 5.0 (3) | Free | Health & Fitness | | [Assasa](https://appshunter.io/ios/app/assasa/id6756825911) | — | Free | Health & Fitness | | [Longevity Protocol](https://appshunter.io/ios/app/longevity-protocol/id6763599545) | — | Free | Health & Fitness | ## More apps by INJAY - [Toki - Date Tracker Widgets](https://appshunter.io/ios/app/toki-date-tracker-widgets/id6743760322) - [FoodCamAI - Diet Control](https://appshunter.io/ios/app/foodcamai-diet-control/id6753333169) - [ALICE — Asset Tracker](https://appshunter.io/ios/app/alice-asset-tracker/id6757587402) All apps by INJAY: https://appshunter.io/developer/529429990 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-19.*