Amazfit Helio Strap vs Whoop 5.0

The Amazfit Helio Strap and the Whoop 5.0 occupy a narrow corner of the wearable market: bands that deliberately omit a display and route every readout to a phone. Both are engineered for continuous sensing, and both assume the wearer wants training and recovery data without another glowing screen competing for attention. The Amazfit Helio …