I tested this budget, subscription-free fitness tracker and it actually offers Whoop some serious competition – especially in terms of value

Amazfit Helio Strap.

Amazfit Helio Strap: One minute review

The Amazfit Helio Strap is a good lower-cost alternative to a Whoop band or even some of the best fitness trackers like Fitbit, as long as you enter with the right expectations. The hardware itself is substantially cheaper, and no subscription is required for day-to-day use of a Helio Strap.