Comparison

Body Insights for Apple Watch vs Training Stack

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Body Insights for Apple Watch

Transform your Apple Watch data into a comprehensive health dashboard. This app unifies key metrics like heart rate, temperature, and blood glucose for science-backed daily insights. Optimize your fitness and wellbeing with advanced analytics and personalized readiness scores.

Highlights
  • Unified health metrics dashboard
  • Fitness Age and HRV tracking
  • Daily recovery and risk scores
  • Sleep and temperature analysis
  • Stress and body battery monitoring
  • CGM integration for metabolic analysis
  • Illness prediction engine
Features
Read full description

Transform your Apple Watch data into a powerful health command center. Body Insights unifies your key health metrics-from heart rate and temperature to blood glucose-into one science-backed daily overview. Gain Whoop-level analytics and Pura-grade insights directly on your iPhone to optimize your fitness and wellbeing. Unify Your Data, Understand Your Body Combine diverse health signals for a holistic picture of your daily health. Core Features (Free): • Fitness Age & HRV: Discover your true biological age and track Heart Rate Variability. • Recovery & Risk Score: Your daily readiness score uses sleep, stress, and RHR to highlight overtraining risk. • Sleep & Temperature Analysis: Analyze sleep stages and nighttime temperature trends. • Stress & Body Battery: Map daily stress and visualize your energy battery reserves. • Comprehensive HR Tracking: Monitor your pulse, workout strain, and ECG-compatible trends. Blood Glucose Analysis (CGM Required - Premium) Integrate a CGM to see how blood glucose interacts with everything. Unlock unified metabolic analysis by combining glucose trends with sleep, exercise, and recovery for enhanced risk insights. Training Load (Premium) Workout at optimal pace, prevent overtraining and injury with our workout load tracker. Get know how much training you need to achieve optimal stage and workout smarter! Illness Prediction Engine (Premium) Know before you feel sick. Our algorithm analyzes 7 health signals-like HRV, temperature, and heart rate-to detect illness risk 2-3 days early with smart alerts and a confidence score. Stress Burnout Manager (Premium) Let the app monitor your stress signals and notify you when it's not the best day to make important decisions or when to slow down. High fidelity HRV RMSSD (Premium) For fitness, recovery, and readiness scores, RMSSD better indicates parasympathetic tone and autonomic balance without dilution from long-term cycles. RMSSD’s precision in everyday scenarios makes it superior. Choose Your Plan • Free: All core features: Fitness Age, Sleep Scores, Stress, HRV, Recovery, Body Battery. • Premium: Unlock the Illness Prediction Engine, CGM integration for unified metabolic analysis, and advanced risk insights. Disclaimer: Body Insights is for health education and preventative wellness. It is not medical advice or a diagnostic tool. CGM features require separate hardware. By using this app you're agreeing to standard Apple Terms of Use (EULA) https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Training Stack

This app consolidates running, strength training, and short exercise bursts into a single platform. It allows users to import training plans, track progress with detailed analytics, and integrate with health data. Personalize your fitness journey with customizable plans and shareable progress reports.

Highlights
  • Import running and strength training plans
  • Track running, strength, and exercise snacks
  • Apple Health integration for automatic syncing
  • Detailed running and strength analytics
  • Customizable strength training with 400+ exercises
  • Widgets and Live Activities for quick access
  • Weather integration for optimized runs
Features
Read full description

Training Stack is the all-in-one fitness app for runners who also lift. Track your running, strength training, and quick exercise snacks—all in one place. RUNNING & TRAINING PLANS - Create multi-week running plans with 11 workout types including Easy, Tempo, Intervals, Long Run, and more - Import plans from Markdown, CSV, ChatGPT, or Claude - Track plan progress with skip/unskip options and recovery scheduling - Add run notes capturing intent, effort level, and conditions APPLE HEALTH INTEGRATION - Sync running workouts automatically from Apple Health - Track distance, pace, calories, heart rate, elevation, and cadence - Link your scheduled workouts to completed runs - Capture weather conditions at workout time RUNNING ANALYTICS - Weekly, monthly, and all-time mileage tracking - Year-over-year comparisons to see your progress - Fastest paces for mile, 5K, and 10K distances - Heart rate analysis including zones, HRV, and VO2 Max - Training load ratios and running streaks STRENGTH TRAINING - Build multi-week strength plans with flexible splits (Full Body, Upper/Lower, Push/Pull/Legs) - 400+ built-in exercises organized by muscle group and equipment - Track sets, reps, weight, RPE, and failure - Support for supersets, circuits, drop sets, and time-based exercises - Personal records and 1RM estimation - Rest timer with haptic feedback EXERCISE SNACKS - Schedule 1-5 minute exercise bursts throughout your day - Create custom sessions with multiple exercises - Track streaks and build consistent movement habits - Quick logging from notifications - 10 color themes to personalize your snacks WIDGETS & LIVE ACTIVITIES - Home screen widgets showing weekly mileage and charts - Lock screen widgets for quick stats - Live Activities during strength workouts and exercise snacks - Dynamic Island support WEATHER INTEGRATION - Real-time conditions and forecasts - Running conditions score (0-100) based on temperature, wind, and precipitation - Plan your runs around the best weather windows SHARE YOUR PROGRESS - Beautiful shareable graphics for runs and weekly summaries - Multiple themes optimized for Instagram, Twitter, and more - Customize what stats to include - Export your health profile for AI coaching integration HYBRID TRAINING - Link running and strength plans together - See your combined daily schedule - Smart conflict resolution for busy training days Built for runners who want to get stronger without juggling multiple apps. Training Stack brings your entire fitness routine into one streamlined experience. https://www.apple.com/legal/internet-services/itunes/dev/stddevelopereula/

Screenshots

Body Insights for Apple Watch4 screens
Training Stack4 screens

Verdict

The call

The clearest difference is rating: Training Stack at 5.0 against Body Insights for Apple Watch's 4.5. Training Stack also leads on review sentiment (100% vs 64%). Body Insights for Apple Watch's advantage is update cadence (every 3 days vs every 3 months) and ratings volume (60 vs 6). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Body Insights for Apple Watch sells 4 in-app purchases, starting at $1.99 per 7 days and Training Stack sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Training Stack holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Body Insights for Apple Watch has 60 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 64% of Body Insights for Apple Watch's written reviews are positive against 100% of Training Stack's.

UpkeepUpdate frequency

Body Insights for Apple Watch ships an update every 3 days, Training Stack every 3 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Body Insights for Apple Watch versus Training Stack: the parameters behind the verdict, then further details
ParameterBody Insights for Apple WatchTraining Stack
PriceFreeFree
Rating4.5 (60 ratings)5.0 (6 ratings) — better
Positive reviews63.8% of reviews100.0% of reviews — better
Number of ratings60 — better6
Update frequencyEvery 3 days — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, Apple WatchiPhone, Apple Watch
Requires iOS18.0 — better26.2
Further details — not scored
Size64 MB26 MB
Age rating17+4+
DeveloperJustinas JakunasRaven Howard

Customer experience

Body Insights for Apple Watch

All ratings60 ratings
Positive86.7%
Neutral6.7%
Negative6.7%
Written reviews47 reviews
Positive63.8%
Neutral17.0%
Negative19.1%

Training Stack

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Body Insights for Apple Watch

Subscriptions4
  • Weekly$1.997 Days
  • Monthly$8.991 Month
  • Quartely Health Insights$19.993 Months
Show 1 more
  • Yearly1 Year trial$34.991 Year
3 purchases

Training Stack

Subscriptions2
  • Pro Stacker - Monthly$4.991 Month
  • Pro Stacker - Annual7 Days trial$19.991 Year
One-time1
  • Pro Stacker - Believer$99.99

Questions

Is Body Insights for Apple Watch free?
Body Insights for Apple Watch is free to download, with in-app purchases available.
Is Training Stack free?
Training Stack is free to download, with in-app purchases available.
Which has better reviews, Body Insights for Apple Watch or Training Stack?
Training Stack is rated higher. Body Insights for Apple Watch averages 4.5 out of 5 from 60 ratings, while Training Stack averages 5.0 from 6 ratings.
Do Body Insights for Apple Watch or Training Stack have ads?
Neither Body Insights for Apple Watch nor Training Stack shows ads.
Which is updated more often, Body Insights for Apple Watch or Training Stack?
Body Insights for Apple Watch ships an update every 3 days, and Training Stack every 3 months. Most recently, Body Insights for Apple Watch was updated on October 25, 2026 and Training Stack on October 24, 2026.

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