Vi Trainer
AI vocal running coach that adapts in real time to your heart rate during every outdoor session
Overview
Vi Trainer (formerly LifeBEAM Vi) is an AI running coach that works through connected earbuds with an integrated heart rate sensor. During your runs, the AI analyzes your HR, cadence, and pace in real time to give personalized voice feedback: slow down, speed up, you're in your target zone. Adaptive coaching adjusts recommendations to your fitness level of the day without you needing to check your watch.
Vi Trainer is for runners wanting an intelligent vocal coach during their runs, without checking their phone or watch. The app runs hands-free and is compatible with most Bluetooth earbuds (the original Vi earbuds with integrated HR sensor remain the optimal experience). Integrations are limited to Apple Health and Strava. The interface is English only. The free version offers basic functions; premium unlocks structured training programs and advanced analytics.
Our verdict
Best for runners who appreciate real-time voice coaching during runs and want heart-rate-driven training without watching their watch. Not for you if you want a structured training plan with multi-week periodization: Vi Trainer excels session-by-session but its longer-term programming is less sophisticated than Runna or TrainingPeaks.