Correlate vs Longevity Protocol
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Correlate
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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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.
Longevity Protocol
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Your personal longevity coach powered by Apple Intelligence. Longevity Protocol transforms your Apple Health data into a clear, actionable longevity score — then gives you the evidence-based daily actions to improve it. Built on peer-reviewed research from the world's leading longevity scientists. YOUR LONGEVITY SCORE A single number (0-100) that reflects how your daily habits align with the science of living longer and healthier. Calculated from your real HealthKit data: sleep, HRV, resting heart rate, VO2 Max, steps, and exercise minutes. AI HEALTH COACH * Chat with an on-device AI coach that knows your actual health data. Ask about your sleep trends, recovery status, or get personalized longevity advice — all processed privately on your device using Apple Intelligence. EVIDENCE-BASED DAILY ACTIONS Each day you get personalized priorities based on your weakest longevity factor. Every recommendation cites the research behind it, from the 13% mortality reduction per hour of sleep to the optimal Zone 2 training thresholds. SMART TRACKING TOOLS - Fasting Timer with autophagy milestone tracking - Food logging with AI-powered nutritional analysis * - Water & hydration tracking with smart reminders - Supplement stack management with adherence tracking - Blood work logging with color-coded optimal ranges - Body composition trends (weight, body fat, BMI) - Morning & evening routine builder with guided timers DEEP HEALTH INTELLIGENCE - Sleep quality forecasting based on your daily patterns - Recovery window prediction for optimal training timing - Workout classification (Zone 2, HIIT, strength) - Biological age estimation from your biomarkers - Weekly challenges calibrated to your fitness level - Monthly trend reports with actionable insights INTERACTIVE WIDGETS & WATCH APP - Home Screen widgets for score, actions, and hydration tracking - Log water and complete actions directly from widgets - Control Center button for quick water logging - Apple Watch companion app with score and daily priorities - Siri Shortcuts for quick access - iCloud sync across all your devices PREMIUM FEATURES Unlock the full experience with Longevity Premium: - Unlimited AI health coaching * - Smart journal with mood & energy tracking - Custom protocol builder * - Blood work integration & biological age tracking - Supplement & medication logging - Morning & evening routine builder - Monthly & yearly trend reports - Shareable progress cards Free users get daily longevity scores, evidence-based actions, food logging, fasting timer, and hydration tracking — plus 3 AI coach messages per day. * APPLE INTELLIGENCE NOTE AI-powered features (Health Coach, Food Analysis, Protocol Builder) require Apple Intelligence, available on iPhone 15 Pro, iPhone 16, and iPad or Mac with M1 chip or later. The app guides you through setup if Apple Intelligence isn't enabled yet. All other features — including your longevity score, daily actions, tracking tools, widgets, and Apple Watch app — work on any supported device. Your health data never leaves your device. All AI processing happens on-device using Apple Intelligence. No accounts, no servers, no data collection. Terms of Use: https://pragmatec.fi/apps/privacy#terms Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://pragmatec.fi/apps/privacy
Screenshots
Verdict
The clearest difference is price: Longevity Protocol at Free against Correlate's $4.99. Longevity Protocol also leads on update cadence (every 5 days vs every 2 weeks) and device support (3 vs 1). Correlate's advantage is in-app purchases (none vs 3) and iOS requirement (18 vs 26.0). On ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Longevity Protocol is free to download; Correlate costs $4.99 up front. Longevity Protocol sells 3 in-app purchases, starting at $4.99 per month. Correlate asks for nothing beyond the download.
Correlate ships an update every 2 weeks, Longevity Protocol every 5 days. The most recent releases landed on October 31, 2026 and October 22, 2026 respectively.
| Parameter | Correlate | Longevity Protocol |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.0 (2 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18 — better | 26.0 |
| Further details — not scored | ||
| Size | 9 MB | 15 MB |
| Age rating | 4+ | 12+ |
| Developer | INJAY | PragmaTec |
In-app purchases
Correlate
No in-app purchases
Longevity Protocol
- Monthly Premium$4.991 Month
- Yearly Premium$29.991 Year
- Lifetime Premium$79.99









