LoadSense: Body Battery
Apple Watch HRV Coach
$6.99 · In-App Purchases · Designed for iPad. Not verified for macOS.
Turn Apple Watch recovery, HRV, sleep and training load into a private body battery score with local coach guidance for push, cap, or recovery days.
How much body battery can you spend today?
LoadSense turns Apple Watch data into a private daily energy budget: recovery, sleep, HRV, resting heart rate, SpO2, workouts, and training load become one clear body battery score plus coach guidance you can act on.
FULL APP ACCESS INCLUDED
• Body battery score (0-100) built from Apple Health signals
• Private daily coach for push, cap, or recovery days
• Daily energy budget with safe spend, reserve, and tomorrow projection
• Recovery drivers that explain what raised or drained your score
• 30-day history to spot patterns in sleep, fatigue, and load
• ACWR training load trends for rapid workload changes
• CNS tap test for a quick nervous-system check
• Multi-sport load breakdown for strength, cardio, mixed training, and 80+ HealthKit workout types
BUILT FOR THE WATCH YOU ALREADY WEAR
No extra band. No account. No cloud dashboard. LoadSense reads your existing Apple Health history and starts working from day one.
LOCAL COACHING, REAL CONTEXT
LoadSense combines sports-science methods with your personal baselines:
• ACWR by Gabbett for workload monitoring
• Session RPE by Foster for training load
• HRV recovery context by Buchheit
• Fitness-Fatigue modeling inspired by Banister
PRIVATE BY DESIGN
Your health data, score, and coach context stay on device. No external AI call, no tracking, and no account required. When Apple Intelligence is available, coach wording can be generated on device while LoadSense keeps calculations and safety guardrails local.
Works best with Apple Watch for full recovery analysis.
Terms of Use (EULA): https://bnjdpn.github.io/LoadSense/terms
Privacy Policy: https://bnjdpn.github.io/LoadSense/privacy
more LoadSense now focuses on a clearer Body Battery experience.
This update improves local coach wording, refreshes recovery and daily energy-budget guidance, and keeps history, tap test, and training-load tools easier to access.
3.0.9 3d ago
LoadSense now focuses on a clearer Body Battery experience.
This update improves local coach wording, refreshes recovery and daily energy-budget guidance, and keeps history, tap test, and training-load tools easier to access.
3.0.8 5d ago
Private body battery coach, now easier to trust at a glance.
This update adds a daily energy budget, sharper Apple Watch recovery context, clearer Pro access, safer local coach answers, and smoother dashboard loading.
3.0.7 Jun 2
Private coach and clearer training guidance.
This update sharpens Apple Watch recovery insights, improves training-load context, clarifies Pro access, and keeps dashboard loading smoother.
3.0.6 May 19
Private coach, clearer Pro access, and smoother dashboard loading.
The daily coach stays local and deterministic, history is easier to scan, and Pro trial/subscription details are clearer.
3.0.5 May 18
Private coach and fixed dashboard
- Added a daily private coach card based on recovery signals
- Kept the iPhone dashboard fixed on one screen
- Moved deeper training details into a dedicated details view
3.0.4 May 14
Cleaner recovery summaries
- Removed visible formatting marks from the daily summary
- Improved summary readability in Dashboard and History
- Made Pro access checks more reliable
3.0.3 May 7
Improved recovery summaries
- Made the daily recovery summary easier to read in Dashboard and History
- Improved contrast and spacing for longer explanations
- Fixed trial and subscription checks for more reliable Pro access
- Improved recovery scoring stability when HRV varies strongly across the week
3.0.2 May 4
Bug Fixes
- Replace removed subscriptionmanager.trialmanager with trialservice
- Add app-level 7-day trial (keychain), remove storekit intro offers
- Make paywall trial text dynamic based on storekit eligibility
- Resolve app store rejection — pro status bug, privacy url, subscription info
3.0.1 Apr 27
What's new in 3.0:
AI Recovery Bilan — your daily recovery summary is now a short, intelligent briefing written by on-device AI. Instead of a list of cards, you get a title and two to three sentences that read like a sports analyst's assessment: what your recovery looks like today, how it compares to your recent trend, and whether you are above or below your personal baseline.
Requires iOS 26 — LoadSense 3.0 requires iOS 26 or later to power the on-device AI experience. The analysis happens entirely on your device — no data is ever sent to a server.
3.0.0 Apr 23
What's new in 2.4:
Battery Impact per Workout — each workout now shows its real impact on your recovery score. See exactly how many points each session costs your battery, calculated from the actual score engine.
More Accurate Training Load — the training load trend now uses detailed heart rate zone data across the full 4-week window, producing results that better match what you see in Apple Fitness.
Smoother Daily Insights — the recovery insights section now animates in smoothly instead of appearing abruptly. Insights are also more consistent between loads, with no more missing text.
Bug Fixes — fixed an issue where insights could display emojis without text, and ensured all insight text is properly localized.
2.4.0 Apr 2
What's new in 2.3:
Smarter Recovery Score — our Body Battery algorithm now uses bidirectional HRV analysis, SpO2 baseline tracking, and sleep balance metrics for significantly more accurate recovery estimates. Your score better reflects how you actually feel.
Training Load Explainer — tap on your training load to understand exactly how it's calculated. A new educational sheet breaks down the math behind your Acute:Chronic Workload Ratio.
Fresh App Icon — a refined new look for your home screen, with full support for light, dark, and tinted icon styles.
Under the Hood — consolidated HealthKit queries and streamlined data pipeline for faster dashboard loads and lower battery usage.
2.3.0 Apr 1
Smarter review prompts
LoadSense now asks for your feedback at the right moment — only when your recovery score is looking good.
Improved stability
Better concurrency handling for smoother performance on all devices.
Updated App Store listing
Refreshed descriptions and keywords for a clearer first impression.
2.1.0 Mar 16
Completely redesigned interface
Fresh visual design with clearer layout, softer cards, and a unified look across all screens.
Training Load Trend
The ACWR ratio is now replaced by a more intuitive Training Load Trend — compare your 7-day load to your 28-day average to better prevent overtraining.
CNS Tap Test
New built-in reaction time test to measure your central nervous system fatigue.
Improved recovery scoring
More accurate recovery calculations with updated HRV, sleep, and fatigue algorithms.
Optimized App Store listing
Refreshed metadata and screenshots for a better first impression.
2.0.1 Mar 11
New visual design
Completely redesigned interface with clearer visual hierarchy, softer cards and a unified theme across all views.
Training Load Trend
ACWR ratio replaced with a more intuitive indicator: Training Load Trend compares your 7-day load to your 28-day average to better prevent overtraining.
Apple Watch sync
Bidirectional communication between iPhone and Apple Watch for always up-to-date data on both devices.
Optimized performance
New centralized design system for a smoother and more consistent experience.
2.0 Mar 7
Improved recovery score
New, more accurate recovery algorithm: bidirectional HRV analysis, SpO2 detection, sleep balance and recovery index. Your score better reflects your actual state.
Unified Summary section
The Summary section now shows the same detailed contributors on both iPhone and Apple Watch, with real values from your health metrics.
Automatic refresh
The dashboard updates automatically on launch, with a smart throttle system that avoids unnecessary calculations.
Optimized performance
Shared components between iOS and watchOS for a smoother and more consistent experience across both platforms.
1.9 Mar 6
Perfectly synchronized scores
The calculation engine is now fully stateless: same HealthKit data, same score, whether on iPhone or Apple Watch. No more divergence between platforms.
Streamlined calculation
The score pipeline has been trimmed by 3,000 lines of unnecessary code for faster and more reliable calculations on every launch.
1.8.2 Mar 3
Aligned Scores
iPhone and Apple Watch now display an identical recovery score, powered by the same calculation engine.
Heart Rate Zone Analysis on Apple Watch
Apple Watch now analyzes your heart rate zones for more accurate training load calculations.
Auto-Refresh
Your score now updates automatically every time you open the app on Apple Watch.
Improved Reliability
Shared architecture across both platforms for consistently accurate results.
1.8.1 Feb 27
Aligned Scores
iPhone and Apple Watch now display an identical recovery score, powered by the same calculation engine.
Heart Rate Zone Analysis on Apple Watch
Apple Watch now analyzes your heart rate zones for more accurate training load calculations.
Improved Reliability
Shared architecture across both platforms for consistently accurate results.
1.8 Feb 25
Apple Watch App
Your recovery score now lives on your wrist. The Apple Watch app displays your recovery battery, detailed metrics (sleep, HRV, activity) and recent workouts with their battery impact.
watchOS Complication
Add your recovery score to any watch face for an at-a-glance check.
Improvements
Shared architecture between iPhone and Apple Watch for seamless data synchronization.
1.7 Feb 23
Updated description
The App Store page now accurately reflects all LoadSense features.
1.6 Feb 18
Completely Free
LoadSense is now 100% free. No subscriptions, no in-app purchases. All features available from day one.
Redesigned History
The History tab has been simplified with an interactive 30-day chart, inline day details, and visual insights.
Personalized Insights
Discover patterns in your recovery: best days of the week, sleep correlation, and recovery time by workout type.
Workout Suggestions
Get workout recommendations tailored to your current recovery level and training history.
Weekly Load Target
Track your progress toward your weekly training load goal with a visual gauge and daily recommendations.
In-App Scientific Sources
View the research references for all algorithms directly in the app (Gabbett 2016, Buchheit 2014, Foster 1998).
Improved Reliability Indicator
The reliability score is now weighted by metric importance for a more accurate assessment.
1.5 Feb 12
This major update transforms your dashboard into a true personal coach. At a glance, understand not only your energy level, but also why it is what it is, and receive a clear
action plan for your day.
WHAT'S NEW
- Smart Dashboard: The main screen has been completely redesigned to give you a clearer and more actionable overview.
- "Why your battery is here": A new section analyzes and displays the main factors that influenced your recovery score. See the positive impact of your sleep or the negative
impact of your training load with clear contribution points (+10, -5, etc.).
- "Today's Plan": The training recommendation is now highlighted in a dedicated card, with varied and motivating advice that changes daily.
- Detailed Load View: The visualization of your ACWR (training load) ratio is now more compact and integrated into its own section.
IMPROVEMENTS
- More Accurate Recovery Calculations: The analysis of your overnight recovery is more reliable. Key metrics like Heart Rate Variability (HRV) and resting heart rate are now
calculated based solely on your main sleep period, eliminating "noise" from daytime measurements.
- Performance Optimization: The recalculation of the load from your past workouts has been optimized for a smoother and faster experience.
1.1 Jan 26
LoadSense now focuses on a clearer Body Battery experience.
This update improves local coach wording, refreshes recovery and daily energy-budget guidance, and keeps history, tap test, and training-load tools easier to access.
more Version 3.0.9 3d ago
Data Not Collected The developer does not collect any data from this app.