Norwegian HIIT starting at 30 seconds, scaling to the full 4×4 protocol
Stage
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Founded
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Based in
DE
PL
Pricing model
Freemium
Free
Pricing
Free plan includes downloading the app and building your plan. wandelbar Pro: $14.99 per month or $49.99 per year. Prices vary by country due to local taxes and store pricing.
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Key features
1,300+ exercises with video demonstrations
90-day personalized workout plan
Plan adapts based on exercise difficulty feedback
Quiet mode removes jumps for apartment-friendly workouts
Voice cues and timers during workouts
Streak tracking with before/after photos and muscle map
Support for optional equipment like dumbbells and pull-up bars
Available in 22 languages on iPhone and Android
Onboarding tailored to fitness level
Progressive on-ramp starting at 30-second intervals
Voice-guided coaching throughout entire session
Lock Screen and Dynamic Island display (iOS 17+)
Works with screen locked and music playing
Available in four languages
Personalized heart-rate zones computed from max heart rate
Native Apple Watch Workout app integration
Adaptive level progression based on recovery data
No account, no ads, no tracking
What makes it different
Plan adapts after every session based on your performance and feedback
Requires zero equipment and works in any living space
Provides structured daily workouts rather than a video catalog to choose from
Designed for beginners and people restarting fitness
Apartment-friendly with quiet mode for silent workouts
Structured progressive on-ramp that no other 4×4 resource offers
Never forced progression: holds levels based on recovery data and never uses shame mechanics
Privacy by design with no account or tracking required
Works completely with screen locked and music playing through voice cues
wandelbar
Crescendo 4×4