Want to improve your endurance and cardiovascular fitness? Boosting your VO2 max - the amount of oxygen your body uses during intense exercise - is the key. 

Target Zone Keeper helps you achieve this by keeping your heart rate in the optimal zone. With a simple, intuitive interface (no complex setup!), it offers visual cues and haptic feedback to keep you focused without interrupting your flow, even when you’re wearing a gloves or simply can’t turn your wrist!

Key features
- Keeps you in the target heart rate zone with minimal to none wrist interaction
- Simple, intuitive setup for easy use right out of the box
- Non-disruptive, customizable alerts
- Personalized heart rate zones focused on VO2 max improvement
- Seamless integration with Apple Health for workout tracking

Benefits
- Get instant feedback without disrupting your workout flow
- Optimize your training specifically for VO2 max improvement