The Verdict

A medical-grade ECG device designed for detecting heart rhythm issues, not daily HRV tracking. Best for those who need clinical-quality ECG readings or have concerns about arrhythmias. Not ideal as primary HRV device.

Pros

FDA-cleared medical device
6-lead ECG (hospital-quality)
Detects AFib, bradycardia, tachycardia
Instant results with AI analysis

Cons

Spot-check only (not continuous)
HRV is secondary feature
Requires premium subscription for full reports
Not designed for daily HRV tracking

Medical-Grade ECG

The 6-lead ECG provides hospital-quality readings that can be shared directly with physicians. FDA clearance for detecting atrial fibrillation, bradycardia, and tachycardia makes it a legitimate medical tool.

HRV Capability

While not its primary purpose, KardiaMobile can measure HRV during 30-second ECG recordings. The accuracy is excellent given the ECG method, but the spot-check nature limits trend analysis.

When to Consider Kardia

Best suited for those with heart health concerns who want occasional medical-grade readings. If daily HRV tracking is your goal, a dedicated HRV device like Polar H10 or a smart ring is more practical.