Available on iOS

Train smarter.
Recover better.

Your AI-powered fitness companion with 3D muscle visualization, intelligent sleep tracking, and personalized coaching—all in one app.

ION
Your workout companion
Muscle Visualization

See every muscle
you train

AI-powered muscle activation mapping shows exactly which muscles you're working. Visualize your progress with beautiful heatmaps and ensure balanced training.

  • Real-time muscle activation for every exercise
  • Front and back body heatmaps
  • Daily and weekly muscle coverage tracking
  • Identify and fix muscle imbalances
Front
Back
Today's Activation
Chest
95%
Shoulders
80%
Triceps
75%
Core
40%
AI Coach
Always ready to help
Create a push workout for me
I'll create a push workout targeting chest, shoulders, and triceps. Here's your routine:
1. Bench Press - 4×8 2. Overhead Press - 3×10 3. Incline Dumbbell Press - 3×12 4. Lateral Raises - 3×15 5. Tricep Pushdowns - 3×12
Log 225 lbs for bench, felt good
Logged! That's a 5 lb PR from last week. You're making great progress. 💪
Ask anything about fitness...
AI-Powered

Your personal
AI coach

Create workouts, log exercises, get feedback—all through natural conversation. Your AI coach understands fitness and learns your preferences over time.

  • Create and customize workout routines instantly
  • Log sets with voice or text—no manual entry
  • Get real-time feedback and track PRs automatically
  • Ask questions about form, nutrition, or recovery
Sleep Tracking

Recovery starts
with sleep

Track your sleep stages, monitor sleep debt, and optimize recovery with intelligent insights from HealthKit integration.

🌙
87
Sleep Score
7h 24m
Time Asleep
📊
-45min
Sleep Debt
Sleep Timeline
11:00 PM2:00 AM5:00 AM7:00 AM
Awake12m
REM1h 48m
Light3h 24m
Deep1h 36m

Requires Apple Watch or iPhone sleep tracking via HealthKit

More Features

Everything you need
to train effectively

Packed with features designed to make your fitness journey seamless, from smart reminders to detailed progress tracking.

Smart Reminders

AI learns your workout patterns and reminds you at the perfect time. Never miss a session.

Progress Charts

Beautiful charts for every metric—weight, volume, reps, time. See your growth over months.

Routine Builder

Create custom routines with warm-up, main, and cool-down sections. Schedule for any day.

Live Activities

Track your current set right from your lock screen. One glance to stay in the zone.

Heart Rate

Monitor heart rate during workouts via Apple Watch. Train in the right zone.

Offline First

Works without internet. Log workouts anywhere—data syncs when you're back online.

App Preview

Beautiful design,
intuitive experience

Every screen is crafted with care. Clean, focused, and delightful to use.

Today Hub
Your daily fitness dashboard
Workout Log
Track every set and rep
AI Chat
Your personal coach
Muscle Map
Visualize your progress
Sleep Stats
Optimize recovery
Progress Charts
See your growth
ION

Start training
smarter today

Join thousands of athletes who've transformed their fitness journey with ION. Available now on iOS.

Download on theApp Store
iOS 17.0 or later