The Verdict

The best budget entry point for HRV tracking. At under $50, it's an affordable way to start monitoring HRV and sleep without committing to expensive hardware. Accuracy is lower than premium devices, but adequate for learning the basics.

Pros

Exceptional value under $50
21-day battery life
Lightweight and comfortable
Basic HRV and stress tracking

Cons

Limited HRV analysis depth
Less accurate than premium devices
Basic app with fewer insights
No third-party app support

Budget HRV Tracking

The Smart Band 9 includes HRV monitoring during sleep and stress tracking throughout the day. While not as detailed as Whoop or Oura, it provides basic HRV trends and a vitality score that incorporates HRV data.

What You Get for $50

Sleep tracking with stages, continuous heart rate, SpO2, stress monitoring, 150+ workout modes, and smartphone notifications. The AMOLED display is surprisingly good for the price. It's remarkable value for basic health tracking.

Accuracy Considerations

Budget fitness bands use simpler sensors and algorithms than premium devices. Expect less precision in HRV measurements—useful for general trends but not for serious athletic training or health monitoring. Consider it a starting point before upgrading.