AI-Powered Training Intelligence

Train with purpose.
Race your best.

ZONE reads your body's signals — HRV, sleep, strain — and builds training plans that adapt to you. Not the athlete you wish you were. The one you actually are.

Start for free See how it works
Recovery
88%
Ready to perform
Today's workout
Run easy
40 min · Zone 2
10K Race
145
days to go
ZONE home screen
50K+
Athletes
2.8M
Workouts logged
94%
Finish their races
#1
AI Training App
HRV Tracking AI Training Plans Running Cycling Triathlon VO₂max Analysis Coach Dashboard Race Countdown Zone Training HRV Tracking AI Training Plans Running Cycling Triathlon VO₂max Analysis Coach Dashboard Race Countdown Zone Training
Everything your training needs

Built for athletes
who don't settle

From your first training run to crossing a finish line — ZONE is the intelligent companion that makes every session count.

AI Training Plans
Periodized plans built around your goal race, fitness level, and training time. Adjusts week by week.
Recovery Intelligence
Daily readiness scores powered by HRV, sleep quality, and training strain. Know when to push.
Performance Profiling
Auto-detect VO₂max, threshold pace, and HR zones from your activities. Always accurate.
Multi-Sport Tracking
Running, cycling, swimming, triathlon. Log every session across all disciplines in one place.
Coaching Dashboard
Coaches track a full roster — recovery scores, weekly volume, and race readiness at a glance.
Goal-Led Planning
Set a race, set a date. ZONE builds back from your goal to make sure you peak at exactly the right moment.
88
Recovery score
Ready to perform
Daily Readiness

Your body
tells the truth

Every morning, ZONE synthesizes your overnight HRV, sleep quality, and accumulated training load into a single readiness score. No guesswork — just data.

Heart Rate Variability
44 ms
Sleep Quality
75%
Training Strain
13.1
Intelligent Planning

Plans that
think ahead

Every plan is structured in training blocks — base, build, peak, taper — and adapts when life gets in the way. Miss a session? ZONE recalibrates.

Block Periodization
Base → Build → Peak → Taper. The same system elite coaches use, automated for every athlete.
Auto-adjusting Load
Recovery scores feed back into the plan. Struggling? ZONE dials back. Thriving? It pushes.
Race-day Countdown
Always know how many days until your goal race and whether you're on track to arrive ready.
10K Race
16-Week Plan
27 Apr 2026 → 17 Aug 2026
16
Weeks
4
Blocks
5.01h
Peak/wk
Adv.
Level
Week 1 schedule
Mon
Rest Day
Tue
Run easy
easy
Wed
Run easy
easy
Thu
Tempo intervals
hard
Fri
Rest Day
Activities
Every sport. Every session.

One place for
all your training

Run, ride, swim, lift. ZONE captures every session and builds a unified picture of your fitness.

IRONMAN 70.3 — Run
19 Apr 2026
20.8 km
Distance
5:44/km
Pace
146 bpm
HR
Morning Run
18 Apr 2026
12.4 km
Distance
5:12/km
Pace
138 bpm
HR
Lunch Workout
17 Apr 2026
45 min
Duration
Strength
Type
155 bpm
HR
Performance Science

Train in the
right zones

Zone training is the difference between grinding and gaining. ZONE calculates your personal zones and targets every session precisely.

56 ml/kg/min
VO₂max
4:49/km
Threshold Pace
190 bpm
Max HR
HR Zones — % Max HR · Auto-detected
Z1 Recovery
0 – 114 bpm
Z2 Aerobic
114 – 133 bpm
Z3 Tempo
133 – 152 bpm
Z4 Threshold
152 – 171 bpm
Z5 Max Effort
171 – 190 bpm
For Coaches

Your entire
roster, one view

See every athlete's recovery score, weekly training volume, and race readiness at a glance. Know who needs rest before they do.

SR
Sofia Reyes
Triathlon · Madrid · Ironman 70.3 Build
82%
Recovery
62 km/wk
JO
James Okafor
Running · London · Marathon Build
55%
Recovery
75 km/wk
AC
Anna Chen
Cycling · Singapore · Gran Fondo Base
35%
Recovery
180 km/wk
MB
Marco Bianchi
Triathlon · Milan · Sprint Tri Peak
71%
Recovery
45 km/wk
Coaching dashboard
What athletes say

Results that speak
for themselves

"ZONE completely changed how I approach training. My HRV-based recovery scores have helped me avoid overtraining and finally hit a new marathon PB."

MK
Maria K.
Marathon runner · Berlin

"As a coach, the dashboard is exactly what I needed. I can see at a glance who's ready to push and who needs an easy day. It saves me hours every week."

DL
David L.
Triathlon coach · Barcelona

"The AI training plan adapted perfectly when I missed a week due to illness. It recalibrated everything and I still made it to my Ironman 70.3 in great shape."

TR
Tom R.
Triathlete · London
Free forever for athletes

Your next race
starts today

Set your goal. Connect your data. Let ZONE build the plan that gets you to the finish line — stronger than you've ever been.

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Coming soon onGoogle Play