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TrainrAI — Your AI Fitness Coach

Personalized, data-driven coaching that transforms your Apple Health metrics into daily workouts, clear goals, and actionable insights — no guesswork, just progress.

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Why TrainrAI is Different

AI-Tailored Workouts

Day-by-day strength and cardio sessions with sets, reps, tempo, and rest — customized to your recovery, workload, and goals.

Analysis That Matters

Session evaluation using VO2 Max trends, HR zones, TRIMP, HR recovery, and running form signals like speed, stride, ground contact time, and vertical oscillation.

Science-Backed Adaptation

Training Capacity uses Recovery, Fitness, and Load gates with ACWR and recovery caps to keep intensity safe, even on high-energy days.

Privacy First

On-device processing. Reads only Health categories you allow. No backend storing your health data. Optional AI via OpenAI proxy.

Built for Real Life

7-day plans sized to your time availability, with substitutions and short-on-time options surfaced via Chat.

What You Get

Training Capacity Today

Recovery, Fitness, and Load gates translate HRV, RHR, sleep, VO2 Max, HR recovery, and TRIMP into clear modes: Recover, Train Light, Train, or Push.

Evolving Goals

AI generates short, clear daily/weekly targets (Zone-2 minutes, TRIMP, distance, strength duration) that progress with you.

Wellness Scorecards

Four daily scores: Stress and Recovery, Training Status, Wellness Pulse, and Metabolic Balance, built from HRV, sleep quality, SpO2, mindfulness, and activity.

Strength + Zone 2

Smart pairing of progressive resistance training with aerobic targets, tuned by your current fitness and recovery.

Clear Sessions

Warm-up, primary lifts, accessories/finisher, and optional cardio — all structured and easy to follow.

Deep Feedback

Narrative insights ("short on last two sets; extend rest next time") plus compliance and trend lines.

Context-Aware Chat

Ask for substitutions, pacing, deload timing, or modifications — answers reference your readiness and recent data.

Apple Watch Native

See readiness and stress on your wrist, follow exercise instructions, and start or complete workouts directly on Apple Watch.

Seamless Sync

Plans, goals, and preferences sync via iCloud; your health data remains in Apple Health.

Apple Watch Experience

Start on Your Wrist

Start, pause, resume, and finish sessions with real-time heart rate, time, and energy tracking on Apple Watch.

Readiness and Stress

Check Training Capacity and Stress and Recovery before you start, then train with confidence.

Exercise Guidance

View exercise instructions and complete each set directly from your wrist while you record the workout.

Who It's For

Beginners

Who want clarity and safe progression without the overwhelm of complicated programs.

Busy Athletes

Who need efficient, personalized structure that adapts to their hectic schedule.

Data-Minded Users

Who want science-based, privacy-respecting coaching backed by real metrics.

Proof It's Smart

Methods You Can Trust

TRIMP, ACWR safety bands (0.8-1.3), HRV and RHR baselines, age/sex-adjusted norms, and gate-based Training Capacity guidance.
Learn how your data powers peak performance →

Structured Outputs

The AI returns clean, actionable plans and analyses designed for real-world training decisions — less fluff, more results.

TrainrAI Journal

Training Insights and Product Updates

Short reads on recovery science, Apple Health metrics, and how TrainrAI turns data into actionable training.

JAN 8, 2026 - 4 min read

What your Apple Watch data says about recovery

Learn how TrainrAI blends HRR, sleep, and HRV trends to guide intensity choices day by day.

Read article ->
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Get Started

Connect Apple Health, choose your goals, and TrainrAI builds your week. Check readiness each morning, follow your tailored session, and watch your metrics — and results — improve.

Transform Your Training Today

Download TrainrAI to experience personalized, science-backed fitness coaching that adapts to your body, your schedule, and your goals.

Download on the App Store