BuzzBurn guides your run with real-time haptic vibrations calibrated to your personal fat-burning heart rate zone. No guessing. Just follow the buzz.
No spam. Launch notification only.
Enter your age, weight and height. BuzzBurn calculates your exact fat-burning heart rate zone using validated cardiovascular science.
Fat burn, cardio endurance, or performance. Each goal maps to a precise heart rate zone with its own haptic rhythm pattern.
Your Apple Watch buzzes at a steady pace while you're in zone. Slow down and the buzzes accelerate — your wrist tells you before your lungs do.
Light activity, recovery walks, cool down.
The sweet spot. Maximum fat oxidation per minute.
Aerobic endurance, cardiovascular improvement.
High intensity intervals, VO2 max training.
Whether you train casually or go ultra, BuzzBurn is optimized for the full 2025 Apple Watch lineup.
Join the waitlist and get early access + a free first month when BuzzBurn launches on the App Store.