The Outsiders Fitness Tracker vs Training Stack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
The Outsiders Fitness Tracker
This app provides data-driven insights for self-coached athletes to optimize performance and recovery. It offers a daily readiness score, tracks training load and progress, and analyzes workouts with advanced metrics. Designed for runners, cyclists, and swimmers who prioritize informed training.
- Daily Training Readiness score
- Training load and recovery tracking
- Performance progress monitoring
- Workout analysis with advanced metrics
- Sleep quality and body metric tracking
- Customizable heart rate zones
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For people who like to spend time outside. Outside of their comfort zone. The Outsiders comes with hand-picked metrics to help you improve performance in an informed way. Made for self-coached athletes driven by data and planning. This is not another "do more" fitness app. The Outsiders balances intensity with recovery. If you train with intent, want clear feedback, and see training as your main side project - this may be the tool for you. *Created by the team behind Apple Watch App of the Year & Apple Design Award Winner* For cyclists, runners, swimmers, and performance-driven athletes who know what they need. ▶ TODAY – KNOW YOUR READINESS Start each day with a Training Readiness score based on the ratio of acute to chronic training load, combined with body metrics and sleep quality. This tracks the balance between recent training effort and what your body can handle, accounting for short-term trends. This helps you: • Select the right effort & intensity for the day • Build steadily toward goals • Avoid injury and overtraining All factors affecting your Readiness appear in interactive charts (Sleep, Training Load Ratio - TLR, Training Form, Body Metrics). Body metric history shows how training impacts recovery and adaptation. View data across 7 days, 4 weeks, or 6 months. Each view shows avg, max, and min values. View sleep quality, duration, stages, and consistency over 14 days. Longer periods are coming. ▶ PROGRESS – TRACK YOUR PERFORMANCE See how your training load is stacking up during the training cycles. • Balance hard training periods and recovery weeks • Training Goals: Set short- and long-term targets and track progress over time • Training Focus: choose the right type of guidance according to your goals - Polarized, Pyramid, Threshold • Track your Endurance Fitness (CTL), Cardio Fitness (VO₂ max), and cycling FTP with clear trends. Coming later: • Running FT Pace • Cycling Power Curve ▶ WORKOUTS – COMPLETE INSIGHT All your HealthKit workout history in one place. Garmin Connect supported. New workouts import automatically. Weekly, monthly, and yearly trends with detailed charts, including training load, duration, energy, distance, elevation, and number of sessions. Detailed in-workout analysis with: • Key stats • Zones (aerobic & anaerobic, traditional 5 HR zones, and cycling power zones) • Breakdown (intervals, segments, and distance splits) • Charts • Advanced metrics: Efficiency Factor, Aerobic Decoupling, Relative Intensity, and Variability Index. ▶ APPLE WATCH APP Key stats always a glance away: Training Readiness, TLR, Sleeping Heart Rate, HRV, Wrist Temperature, Respiratory Rate, Blood Oxygen, and recent Sleep. Watch app complications: • Training Readiness • Training Load Ratio ▶ WIDGETS Check Training Readiness, Body Metrics, Training Load Ratio, and Endurance Fitness on your home screen. ▶ LOCALISATION Available in 10 languages: English, German, Spanish, French, Italian, Portuguese, Chinese (Simpl. & Trad.), Japanese, Korean. ▶ PRIVACY The app only reads HealthKit data on your device and never stores it elsewhere. ▶ DISCLAIMER The Outsiders uses your HealthKit data and works best with >90 days of training history. If you’re new to Apple Watch or workout logging, it will need time to learn your patterns. Limited data means limited insight. Crafted with attention to detail, by real, air-breathing humans. Terms of Service: https://gentlerstories.com/theoutsiders/terms-of-use Privacy Policy: https://gentlerstories.com/theoutsiders/privacypolicy
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.
- 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
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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
Verdict
The clearest difference is update cadence: The Outsiders Fitness Tracker at every 11 days against Training Stack's every 3 months. The Outsiders Fitness Tracker also leads on ratings volume (134 vs 6). Training Stack's advantage is rating (5.0 vs 4.6) and review sentiment (100% vs 81%). 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
Both are free to download. The Outsiders Fitness Tracker sells 5 in-app purchases, starting at $6.99 per month 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.
Training Stack holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: The Outsiders Fitness Tracker has 134 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 81% of The Outsiders Fitness Tracker's written reviews are positive against 100% of Training Stack's.
The Outsiders Fitness Tracker ships an update every 11 days, Training Stack every 3 months. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.
| Parameter | The Outsiders Fitness Tracker | Training Stack |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (134 ratings) | 5.0 (6 ratings) — better |
| Positive reviews | 80.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 134 — better | 6 |
| Update frequency | Every 11 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 26.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 163 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Gentler Stories LLC | Raven Howard |
Customer experience
The Outsiders Fitness Tracker
Training Stack
Bugs and requests
The Outsiders Fitness Tracker
Reported bugs
1 issue- Crash on iOS26
Requested features
3 requests- Complications for Apple Watch
- Bubbles in Progress tab to show daily distance
- Support for Chinese language
Training Stack
Not enough reviews yet to summarise bugs or requests.
In-app purchases
The Outsiders Fitness Tracker
- Outsider Absolute Monthly$6.991 Month
- Outsider Absolute Yearly$29.991 Year
- Outsider Absolute Yearly7 Days trial$49.991 Year
- Outsider Absolute for Life$79.99
- Outsider Absolute for Life$119.99
Training Stack
- Pro Stacker - Monthly$4.991 Month
- Pro Stacker - Annual7 Days trial$19.991 Year
- Pro Stacker - Believer$99.99
Questions
Is The Outsiders Fitness Tracker free?
Is Training Stack free?
Which has better reviews, The Outsiders Fitness Tracker or Training Stack?
Do The Outsiders Fitness Tracker or Training Stack have ads?
Which is updated more often, The Outsiders Fitness Tracker or Training Stack?
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