Run easy,
train smarter.
Heart rate zone training built around the Maffetone method. Real-time coaching on your wrist, training analytics on your phone.
Free · No account required 
Stay in the zone.
Everything you need for aerobic base building — nothing you don't.
Real-Time Zone Coaching
Your Apple Watch shows your current HR zone live — with haptic and audio cues when you drift out of your target.
MAF 180 Built In
Enter your age, get your zones. The Maffetone method removes the guesswork from aerobic base building.
Training Analytics
Cardiac drift, HR recovery, zone distribution, and weekly trends — see your aerobic fitness improve over time.
iPhone + Apple Watch
Start runs from your wrist. Review history, stats, and settings on your phone. Everything syncs automatically.
Live Activities
Track your zone from the lock screen and Dynamic Island without raising your wrist or opening the app.
Completely Private
No accounts, no tracking, no analytics. Your data stays on your device and syncs only to your own iCloud.
See it in action.
Home 
Run Detail 
Insights 
Run History 
Settings 
Active Workout 
HR Gauge 
Zone Distribution Start running easier.
Free on the App Store. No account required.
Explore Our Apps
Breathe Easy
Guided breathing exercises with haptic feedback. Box breathing, 4-7-8, and more.
Check Yourself
A lightweight macOS menu bar app to check your appearance before meetings.
Contrast
A purpose-built timer for contrast therapy with HealthKit sync and Apple Watch support.
Stretch Easy
Guided stretching routines with timers, haptics, and Apple Watch support.
Cycle Easy
Privacy-first period tracking. Everything stays on your device — no accounts, no cloud.
Track Easy
Track habits without the hassle. Unlimited habits, streaks, widgets, and Apple Watch.
Voice Easy
Record voice memos with on-device transcription. Your voice never leaves your device.
Decibel
Measure sound levels instantly with NIOSH exposure warnings.
Set Easy
Log workouts, track progressive overload, and review strength trends over time.
Temp Easy
Track body temperature with color-coded readings, HealthKit sync, and history.
Count Easy
Count anything with satisfying haptics. Multiple counters, history, and widgets.
Dose Easy
Track supplement doses, reminders, and routines while keeping your health data private.
Tune Easy
Tune your guitar simply with real-time pitch detection and reference tones.
Rest Easy
Drift off with soothing ambient sounds. Mix soundscapes and set a sleep timer.
Hydrate
Track your daily water intake with quick-log buttons and HealthKit sync.
Spend Easy
Track spending privately. No bank connections, no cloud sync, no subscriptions.
Split Easy
Calculate shared bills with people, tips, tax, and uneven split logic in moments.
Macro Easy
Fast nutrition logging for protein, carbs, and fats with a clean daily dashboard.
Weigh Easy
Track your weight privately with trend charts, goals, and progress photos.
Pressure Easy
Track blood pressure with AHA category indicators and PDF export for your doctor.
Caffeine Easy
Know when caffeine clears your system with half-life decay visualization.
Fast Easy
A simple, beautiful fasting timer. No accounts, no tracking, no subscriptions.
Meds Easy
Never miss a dose. Medication schedules, reminders, and refill tracking.
Pomo Easy
Focus with the Pomodoro technique. Live Activities, widgets, and Apple Watch.
Focus Easy
A distraction-free home screen launcher. Replace clutter with calm.
Mood Easy
Track your mood privately with quick emoji logging and Year in Pixels visualization.