Best Boost VO2 alternatives: apps like Boost VO2 - Norwegian 4x4

10+ similar apps compared and reviewed

4.8 avg rating
10 free apps
Updated November 2026

Boost VO2 is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to Boost VO2

N4x4#1

N4x4 by Jan van Rensburg

Gold Standard for VO2 Max
4.6(22 ratings)
Free
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This app guides you through high-intensity interval training to improve VO2 max. It uses your heart rate monitor to provide real-time cues for effort and recovery, tracking your progress over time. The app offers voice coaching and reminders to help you build a consistent training habit.

Norwegian 4x4 workout#3

Norwegian 4x4 workout by Alice Winthrop

Interval timer + HR zone guide
5.0(4 ratings)
FreeIn-App Purchases
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This app guides you through a structured interval workout, calculating your target heart rate zones and providing real-time coaching. It features a simple warm-up, four intense 4-minute intervals with recovery periods, and a cool-down, all managed by an integrated timer. Track your progress and sync data with Apple Health.

More apps like Boost VO2

4
Norwegian 4x4 Heart Rate
Norwegian 4x4 Heart Rate
Norwegian 4x4 Heart Rate
VO2max interval timer with HR
Free

This app guides you through the Norwegian 4x4 VO2max interval training protocol using your Bluetooth heart rate monitor. It provides real-time audio cues to keep you in your target heart rate zones during work and rest intervals.

Bluetooth heart rate monitor supportVO2max interval protocol guidanceLive heart rate gauge
💪 Health & Fitness
(1)
free
5
VO2 Flow: Norwegian 4x4 Timer
VO2 Flow: Norwegian 4x4 Timer
VO2 Flow: Norwegian 4x4 Timer
Norwegian 4x4 Interval Trainer
Free

This interval training app guides you through the Norwegian 4x4 protocol or allows you to create custom workout routines. It offers audio cues, haptic feedback, and music integration to enhance your training sessions. Track your progress with workout history and unlock achievements.

Norwegian 4x4 protocolCustom interval creationWorkout history tracking
💪 Health & Fitness
(1)
free with in-app purchases
6
Norwegian 4x4 Coach
Norwegian 4x4 Coach
Norwegian 4x4 Coach
Heart-rate interval coaching
Free

This app guides you through the Norwegian 4x4 interval workout using your real heart rate. It provides spoken cues and target heart rate ranges to ensure you train at the correct intensity without needing to constantly check your screen.

Live heart-rate coachingSpoken cues and phase guidanceConfigurable workout parameters
💪 Health & Fitness
(1)
free
7
VO2Max Training
VO2Max Training
VO2Max Training
Improve your VO2 Max
Free

Improve your cardiovascular fitness with science-backed training protocols and real-time coaching. Track your progress, visualize trends, and receive AI-powered insights to enhance your body's oxygen utilization for better health and longevity.

Science-backed training protocolsReal-time Apple Watch coachingProgress tracking and visualization
💪 Health & Fitness
(8)
freemium
8
VO2 Max Training - PEAKVO2
VO2 Max Training - PEAKVO2
VO2 Max Training - PEAKVO2
Test & Improve with Intervals
Free

This app guides you through science-backed interval training protocols to improve cardiovascular fitness. It offers pre-set workouts like Norwegian 4x4 and Tabata, or allows you to create custom routines. Track your progress and build healthy habits with this comprehensive fitness tool.

Science-backed interval protocolsNorwegian 4x4, Tabata, HIITCustom workout builder
💪 Health & Fitness
(8)
freemium
9
Norwegian 4x4 HIIT - Myworkout
Norwegian 4x4 HIIT - Myworkout
Norwegian 4x4 HIIT - Myworkout
Improve VO2max & heart health
Free

This app offers a science-backed cardio exercise program designed to improve health and prevent lifestyle diseases. It focuses on efficient workouts, measuring VO2 max with high accuracy, and integrating with popular fitness trackers. A premium subscription unlocks full features.

Time-efficient cardio workoutsVO2 max measurement and improvementPrevention of lifestyle diseases
💪 Health & Fitness
(21)
freemium
10
VO2 max Hero - AI Tracker
VO2 max Hero - AI Tracker
VO2 max Hero - AI Tracker
Cardio Fitness Age & Widget
Free

This app analyzes your cardio fitness data from Apple Health using AI to provide personalized insights and actionable tips for improvement. Understand your VO2 max trends, compare yourself to elite levels, and receive tailored advice beyond generic fitness advice.

AI-driven VO2 max analysisPersonalized fitness insightsCardio trend tracking
💪 Health & Fitness
(1)
free with in-app purchases