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Adapted

HealthFit

Training-load analytics and workout syncing built on Apple Health data

Stephane Lizeray · Health & Fitness · $6.99

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iPhone screenshots

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iPad screenshots

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How it uses iPhone Duo

HealthFit's 12.16.3 release notes (October 21, 2026) say the app is "iPhone Duo Ready" and fully optimized for iPhone Duo, with adaptive layouts designed for its display. The developer does not describe specific folded, unfolded or half-open behaviour, so it is listed as Adapted. We have not yet tested it on a device.

What’s New

Version 12.16.3 ·

• iPhone Duo Ready HealthFit is fully optimized for iPhone Duo, with adaptive layouts designed to make the most of its unique display. • New Medium Up Next Widget See your upcoming workouts for the next 4 weeks at a glance. • Recovery HRV Export HealthFit can now export Recovery HRV to fitness platforms that support HRV. Requires Apple Watch Series 12 or Apple Watch Ultra 4. • More Flexible Tab Bar Don’t use Friends? You can now hide the Friends tab on iPhone for a cleaner, more compact tab bar. • Various bug fixes and stability improvements

About this app

HealthFit is a training companion for Apple Watch users that reads the workouts and health data already stored in Apple Health and turns them into deeper fitness metrics. It is aimed at runners, cyclists and other athletes who want more than the summaries in Apple's own Fitness app, and it works without creating an account. The app calculates training load along with fitness, fatigue and form (the CTL, ATL and TSB model familiar from coaching platforms), shows heart-rate zone distribution, and offers year-over-year comparisons and training heat maps. Its activity feed lists workouts with maps, photos and key numbers, and individual sessions can be analysed for pace, elevation, power and cadence. Equipment tracking covers items such as shoes and bikes, and workouts can be synced out to other fitness platforms. The 12.16.3 update, released on October 21, 2026, lists iPhone Duo readiness first in its release notes, with the developer saying the app is fully optimized for the device with adaptive layouts. The same release adds a medium Up Next widget covering four weeks of planned workouts, export of Recovery HRV readings to supporting platforms (on Apple Watch Series 12 or Ultra 4), and the option to hide the Friends tab.

App Store descriptionWritten by the developer.

Turn your Apple Watch into a complete training platform. HealthFit transforms the workout and health data stored in Apple Health into advanced fitness metrics, training insights, and seamless workout syncing—with no account required. Whether you're training for your next race, improving your fitness, or simply staying active, HealthFit helps you understand your progress, optimize your training, and achieve your goals. TRAIN SMARTER Go beyond basic workout summaries with advanced training analytics designed to help you make better decisions. HealthFit helps you understand: • Training Load • Fitness (CTL), Fatigue (ATL), and Form (TSB) • Training Load Ratio • Heart Rate Zones and Training Distribution • Year Comparisons and Trends • Explorer Score and Training Heat Maps These are the kinds of metrics and insights typically reserved for premium coaching platforms. EVERYTHING IN ONE PLACE HealthFit combines your workouts, fitness trends, and health metrics in a beautifully designed app. No more jumping between multiple apps. Track your training load, fitness progression, health metrics, and workout history from a single dashboard. A BETTER ACTIVITY FEED Browse all your workouts with maps, photos, and key metrics visible at a glance. Dive deeper into every activity with advanced analysis including: • Customizable Heart Rate Zones • Training Load Tracking • Equipment Tracking (Shoes, Bikes & More) • Elevation, Pace, Power & Cadence Analysis • Detailed Charts & Performance Trends HealthFit can even automatically associate photos taken during your workouts, bringing your activity history to life. POWER INSIGHTS Analyze your running and cycling power with advanced metrics including: • Estimated Critical Power • Weighted Average Power • Mean Maximal Power Curves • Power Distribution Analysis • Historical Power Trends Understand how your power evolves and identify your strengths across different durations. HEALTH METRICS FOR ATHLETES HealthFit provides a focused view of the health metrics that matter most, helping you understand how your health, stress, and fitness evolve over time. • Heart Rate Variability (HRV) • Resting Heart Rate • Cardio Fitness (VO₂ Max) • Sleep Metrics • Weight, BMI & Body Fat • Baevsky Stress Index Everything is presented clearly so you can connect your health trends to your training performance. BUILT FOR EVERY SPORT Most fitness apps focus on running and cycling. HealthFit supports all activity types and automatically adapts its statistics, charts, and analysis to your most frequent activities, whether you specialize in a single sport or enjoy a variety of activities. AUTOMATIC WORKOUT SYNCING HealthFit automatically syncs your workouts in the background to all your favorite fitness platforms. Every workout recorded with Apple Watch is uploaded automatically—no manual exports, no extra steps, no missing activities. You can even sync your entire workout history. MULTISPORT SUPPORT HealthFit fully supports multisport and interval workouts and is one of the few apps capable of exporting multisport activities as true multisession workouts. YOUR DATA STAYS YOURS Privacy is a core principle of HealthFit. No account required. No login required. HealthFit works directly with Apple Health and keeps your data on your device—giving you powerful fitness insights without sending your personal data to the cloud. CONNECTS TO YOUR FAVORITE FITNESS PLATFORMS Supported services include Strava, TrainingPeaks, Final Surge, Selfloops, Smashrun, Ride with GPS, Cycling Analytics, Today's Plan, Runalyze, Suunto, 2PEAK, Komoot, COROS, Intervals.icu, Nolio, TrainAsONE, Tredict, Stages Link, Map My Tracks, and Xhale. Export detailed workout reports to Markdown, complete with charts, maps, and workout insights, or export your data in FIT, GPX, CSV, and Google Sheets formats. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Highlights

  • Training load, fitness, fatigue and form metrics
  • Customizable heart-rate zones
  • Workout feed with maps and photos
  • Pace, elevation, power and cadence analysis
  • Equipment tracking for shoes and bikes
  • Workout syncing to other fitness platforms
  • No account required

HealthFit on iPhone Duo: FAQ

Is HealthFit optimized for iPhone Duo?

Partly. HealthFit is Adapted: it fills the larger inner display, but it does not do anything special with the fold. Verified on October 21, 2026 (Developer statement).

What does HealthFit look like on iPhone Duo?

HealthFit's 12.16.3 release notes (October 21, 2026) say the app is "iPhone Duo Ready" and fully optimized for iPhone Duo, with adaptive layouts designed for its display. The developer does not describe specific folded, unfolded or half-open behaviour, so it is listed as Adapted. We have not yet tested it on a device.

How much does HealthFit cost?

HealthFit costs $6.99 on the App Store.

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