HEART RATE. NOT HORSEPOWER.

Train the zone,
not the number

Zone Pedal adjusts your trainer in real time to keep your heart rate in the target zone. Every ride teaches the system how your body responds — so the next ride fits you better.

4 Hz Control loop
FTMS Any smart trainer
HOW IT WORKS

Three steps. Zero complexity.

01

Connect

Pair your BLE smart trainer and heart rate monitor. One-time setup, automatic reconnection.

02

Set Zone

Choose your target heart rate zone for the session. Or let the training plan decide.

03

Ride

The control loop takes over. Trainer resistance adjusts automatically to keep you locked in zone.

PROTOCOL FIDELITY

The Norwegian 4×4 is prescribed in heart rate.
So why is every app running it in watts?

Power-Based App

HR escapes the zone. Power stays obliviously constant.

Zone Pedal

HR stays in zone. Power adapts to fatigue.

Same protocol. Different execution. Only one is actually a 4×4.

Norwegian 4×4: Helgerud et al., 2007 — Medicine & Science in Sports & Exercise

CAPABILITIES

Engineered for the zone

Closed-Loop HR Control

250 watts at minute 5 is a different workout than 250 watts at minute 45. Your heart rate knows the difference—your power meter doesn't. Zone Pedal adjusts resistance continuously as your physiology shifts.

Coyle & Gonzalez-Alonso, 2001

Learns Your Body

Every ride teaches Zone Pedal how your body responds to effort — your recovery speed, fatigue patterns, and threshold power. No lab test required. The result: workouts that fit you better every time, and FTP estimates built from real rides instead of painful tests.

Works Offline

Full on-device training engine. No internet required during your ride. Your session never depends on cloud availability or Wi-Fi signal.

Any BLE Trainer

Compatible with any Bluetooth FTMS smart trainer. Tacx, Wahoo, Elite, Saris—if it speaks the protocol, Zone Pedal controls it.

TRAINING LIBRARY

Built-in protocols. All HR-controlled.

Easy

  • Zone 2 Endurance
  • Long Steady
  • Progressive Endurance
  • Maffetone Aerobic
  • Active Recovery
  • Recovery Spin

Moderate

  • Tempo Ride
  • Tempo Endurance
  • Sweet Spot Blocks
  • Polarized Pyramid
  • 30-Min Express
  • Threshold Blocks
  • Long Threshold

Hard

  • Billat 30/30
  • Rønnestad 30/15
  • Seiler 4×16
  • Norwegian 4×4
  • Seiler 4×8
  • VO2 Max Intervals
  • Tabata Sprints
  • Anaerobic Repeats

All plans adapt to your fitness level. 10–120 min durations.

PRICING

Simple. No tiers. Full access.

Monthly

$9.99/mo
  • Full HR zone control
  • All training protocols
  • 14-day free trial
SAVE 33%

Annual

$79.99/yr
  • Full HR zone control
  • All training protocols
  • 14-day free trial

Full HR zone control, every built-in protocol, and a system that gets smarter with every ride. 14-day free trial.

Launching soon on iOS

Get notified when Zone Pedal hits the App Store.

No spam. One email when we launch.