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⌚ Features

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⌚ Apple Watch Features

Peak Condition is designed primarily for Apple Watch, giving you real-time workout metrics directly on your wrist without needing your iPhone.

🏃 72 Cardio Activity Types

Track 72 different activities with specialised metrics for each sport.

🏃 Running (5)

Running Trail Running Treadmill Track Running Ultra Running

🚴 Cycling (7)

Cycling Mountain Biking Gravel Cycling E-Bike Indoor Cycling Spinning Roller Skiing

🏊 Swimming (2)

Pool Swimming Open Water Swimming

❄️ Winter Sports (8)

Cross-Country (Classic) Cross-Country (Skating) Alpine Skiing Snowboarding Backcountry Skiing Snowshoeing Ice Skating Biathlon

🏋️ Indoor Machines (6)

Rowing Machine Elliptical Stair Climber SkiErg Jump Rope Indoor Cardio

🥾 Outdoor (5)

Walking Walk the Dog Hiking Mountaineering Orienteering

🌊 Water Sports (8)

Rowing Kayaking Canoeing Stand Up Paddling Surfing Kitesurfing Windsurfing Dinghy Sailing

🎾 Racket Sports (6)

Tennis Padel Pickleball Badminton Squash Table Tennis

⚽ Team Sports (6)

Football Handball Basketball Volleyball Ice Hockey Rugby

🧘 Mind & Body (6)

Yoga Pilates Tai Chi Meditation Stretching Breathwork

🥊 Combat Sports (5)

Boxing Kickboxing MMA Martial Arts Fencing

🧗 Climbing (1)

Indoor Climbing

💪 Functional Training (3)

Functional Training Bootcamp Circuit Training

🛼 Roller Sports (2)

Inline Skating Skateboarding

⛳ Golf (1)

Golf

📦 Other (1)

Other

Sport-Specific Features

🎿 Biathlon

Automatic shooting bout detection for biathlon (cross-country skiing + shooting). The app detects when the skier stops at a shooting station based on speed dropping below a threshold, times the shooting phase, and detects when skiing resumes. Each shooting bout records duration, average heart rate, and max heart rate.

🏊 Multisport

Multi-discipline workout support with transition timing.

Triathlon

Swim → T1 → Bike → T2 → Run with automatic transition detection and timing.

Duathlon

Run → T1 → Bike → T2 → Run with per-segment statistics.

Aquathlon

Swim → T1 → Run with transition timing.

Custom Multisport

Create your own multi-discipline sequence with any combination of activities.

💪 Strength Training

Comprehensive strength training support with templates, exercise library, and detailed logging.

⏱️ Interval Training

Built-in interval timer with 10 presets across 4 protocol types, plus custom intervals.

Tabata (2 presets)

Tabata Classic

20s all-out effort / 10s rest × 8 rounds = 4 minutes. The original Dr. Izumi Tabata protocol.

Double Tabata

Two Tabata rounds with 1 minute rest between. Intense 9-minute workout.

AMRAP (4 presets)

AMRAP 5 Min

Short and intense. Complete as many rounds as possible in 5 minutes.

AMRAP 10 Min

Classic CrossFit-style duration. Track rounds and partial reps.

AMRAP 15 Min

Test your endurance and mental toughness over 15 minutes.

AMRAP 20 Min

The ultimate test of work capacity.

EMOM (4 presets)

EMOM 10

Every Minute On the Minute for 10 rounds. 40s work / 20s rest per minute.

EMOM 15

15-minute EMOM. Pace yourself for 15 rounds.

EMOM 20

20-minute EMOM. A challenging endurance workout.

EMOM 30

30-minute EMOM. The ultimate EMOM challenge.

Custom Intervals

Create your own interval structure with custom work and rest periods, repetitions, and series.

Interval Features

🌬️ Guided Breathing

5 built-in breathing patterns with animated visual guides and haptic feedback on Apple Watch.

Box Breathing (4-4-4-4)

Equal inhale, hold, exhale, hold. Used by Navy SEALs for stress management and focus. 4 cycles default.

4-7-8 Breathing

Inhale 4s, hold 7s, exhale 8s. Dr. Andrew Weil's technique for deep relaxation and better sleep.

Coherent Breathing (5-5)

5s inhale, 5s exhale. Achieves 6 breaths per minute — optimal for HRV improvement.

Relaxing Breath (4-6)

4s inhale, 6s exhale. Extended exhale activates the body's relaxation response.

Energising Breath (4-2-4)

4s inhale, 2s hold, 4s exhale. Faster rhythm to increase energy and alertness.

❤️‍🩹 Recovery & HRV

Monitor your recovery status using heart rate variability and other health metrics.

Fitness Tests

🏃 Cooper Test

12-minute run test for VO₂max estimation. Indoor and outdoor modes available.

🪜 Step Test

3-minute step test at 96 bpm. Can be done indoors with no equipment.

Fitness Age

Peak Condition estimates your physiological age — how old your body functions compared to population averages — using a multi-factor model grounded in peer-reviewed cardiovascular research.

🔬 Scientific Foundation

The core of the Fitness Age algorithm is a reverse-lookup in the HUNT Fitness Study reference table. Your measured VO₂max is compared against age-stratified population medians from the HUNT study (4,600+ Norwegian adults tested on treadmill), and the algorithm finds the age at which your VO₂max would be considered average. This is the same methodology used by the NTNU Fitness Calculator.

📊 VO₂max Estimation

When you complete a workout with sufficient time in heart rate zones 4 and 5, Peak Condition estimates your VO₂max using the Uth et al. (2004) formula as a baseline:

VO₂max ≈ 15.3 × (HRmax / HRrest)

This baseline is then refined with intensity data (heart rate reserve percentage in zones 4–5), training impulse (TRIMP, Banister 1991), and heart rate recovery rate. Individual estimates are smoothed over a 90-day window using exponential decay weighting, with automatic outlier detection to prevent single unusual workouts from skewing your long-term value.

🧮 Multi-Factor Fitness Age Model

The final Fitness Age combines seven weighted components, each with its own research basis:

📐 How It Works in Practice

Each component produces an age adjustment (in years) relative to your chronological age. These adjustments are combined using a weighted average. For example, a 57-year-old with a VO₂max of 52 ml/kg/min has a value that matches the population median for a 20-year-old male in the HUNT dataset — resulting in a significant age reduction from that component alone.

The components are correlated (fit people tend to score well on all metrics), which means the multi-factor model naturally reinforces the VO₂max-based estimate rather than inflating it. The result is a Fitness Age that reflects your overall cardiovascular health profile.

🎯 Confidence Levels

Peak Condition reports a confidence level with each Fitness Age estimate:

📚 References

  1. Nes BM, Janszky I, Wisløff U, Støylen A, Karlsen T. Age-predicted maximal heart rate in healthy subjects: The HUNT Fitness Study. Scand J Med Sci Sports. 2013;23(6):697-704.
  2. Nes BM, Vatten LJ, Nauman J, Janszky I, Wisløff U. A Simple Nonexercise Model of Cardiorespiratory Fitness Predicts Long-Term Mortality. Med Sci Sports Exerc. 2014;46(6):1159-1165.
  3. Uth N, Sørensen H, Overgaard K, Pedersen PK. Estimation of VO₂max from the ratio between HRmax and HRrest — the Heart Rate Ratio Method. Eur J Appl Physiol. 2004;91(1):111-115.
  4. Cole CR, Blackstone EH, Pashkow FJ, Snader CE, Lauer MS. Heart-Rate Recovery Immediately after Exercise as a Predictor of Mortality. N Engl J Med. 1999;341(18):1351-1357.
  5. Banister EW. Modeling elite athletic performance. In: MacDougall JD, Wenger HA, Green HJ, eds. Physiological Testing of the High-Performance Athlete. 1991:403-424.
  6. Shaffer F, Ginsberg JP. An Overview of Heart Rate Variability Metrics and Norms. Front Public Health. 2017;5:258.
  7. World Health Organization. WHO Guidelines on Physical Activity and Sedentary Behaviour. Geneva: WHO; 2020.

📊 Analytics Dashboard

Comprehensive analytics on your iPhone to track progress and identify trends.

📺 Workout Display Mode

Cast your live workout metrics from Apple Watch to your iPhone screen — perfect for gym use, home training, or group sessions.

🔄 Strava & Garmin Sync

Export your workouts to popular fitness platforms.

🚀 Personalised Onboarding

Get started quickly with a guided setup that tailors the app to your fitness level and goals.

🎨 Customisation

💰 Pricing

Peak Condition is free to download with full functionality. The free version displays occasional advertisements.

Free

All features included. Occasional ads displayed. No feature limitations.

Supporter

One-time in-app purchase removes all advertisements and supports ongoing development.