DTrain

iPhone / Forme et santé

DTrain is an AI-powered triathlon training app built for Ironman and 70.3 athletes who want a smart, personalized coach on their iPhone — no subscription, no cloud, no data sharing.

PERSONALIZED DAILY WORKOUTS
Every session is generated by an on-device AI model that knows your training phase (Base, Build, Peak, Taper), race date, fitness level, and yesterday's Apple Health data. Swim, bike, run, strength, and rest days — all planned and adapted for you.

AI COACH CHAT
Chat with your coach anytime. Ask about today's workout, request a swap, report fatigue, or get advice on pacing and recovery. The coach reads your HRV, resting heart rate, and sleep data to give you context-aware guidance.

RECOVERY & READINESS
Your daily readiness score is calculated from HRV, resting heart rate, and sleep — pulled automatically from Apple Watch. See 14-day sparkline trends for each metric and understand exactly why your score is what it is.

HR ZONES & KARVONEN METHOD
Set your max heart rate from 6 months of real workout data. DTrain computes your personal 5-zone Karvonen model and applies it to every workout — so Zone 2 really means Zone 2 for your heart.

ADAPTIVE TRAINING PLAN
The plan evolves with you. Miss sessions, report an injury, or ask for a lighter week — the AI adjusts upcoming workouts to keep you on track for race day without overtraining.

14-WEEK CALENDAR
See your full training calendar at a glance. Tap any day to view the prescribed workout and compare it against what you actually completed from Apple Health.

FULLY OFFLINE & PRIVATE
All AI runs on your device. No account required. No data ever leaves your iPhone. Your health data is yours.

APPLE HEALTH INTEGRATION
Reads workouts, HRV, resting heart rate, sleep, VO2 max, and heart rate from Apple Health and Apple Watch. Automatically syncs completed workouts to keep your plan up to date.

BUILT FOR IRONMAN ATHLETES
Supports full Ironman (140.6), 70.3, Olympic, and Sprint distances. Training phases shift automatically as race day approaches.

Quoi de neuf dans la dernière version ?

• Edit Workout Pack — customize and save your own workout structures (in-app purchase)
• Readiness prescription — sRPE-weighted ACWR now drives your daily training load recommendation
• Sleep stage trends — 14-day breakdown of deep/REM/core sleep carried into the readiness view
• Streak badge on the home dashboard
• Training load trends — Acute/Chronic Workload Ratio (ACWR) chart
• On-device AI coach improvements — few-shot prompts, honest token-budget handling, context overflow recovery
• Fixed: Apple Health sync restored under iOS 18 New Architecture
• Fixed: workout detail sheet no longer hangs on a spinner