Underdog — Heart Rate Zones Reviews — Discover what people think of this product.
Underdog — Heart Rate Zones
Zone 2 training app for Apple Watch with weekly leagues
Underdog tracks heart rate zones on Apple Watch automatically. Zone 2 training earns points, and you compete in weekly leagues with friends, climbing from Bronze to Diamond. It turns steady cardio into a game you actually want to keep playing. Free on iPhone.
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What does Underdog — Heart Rate Zones help with?
Underdog (tryunderdog.com) is a heart-rate-zone training app for Apple Watch.
What it does
- Tracks your heart rate zones automatically during any workout
- Awards points for Zone 2 and higher-zone minutes
- Weekly leagues with friends: Bronze to Diamond
- Designed around consistency, not one-off efforts
Who it is for Runners, cyclists and anyone building an aerobic base who wants accountability.
Free on iPhone with Apple Watch.
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