How Accurate Is Luna's Sleep Tracking? Luna vs Whoop, Samsung & Oura

Introduction

Sleep tracking accuracy is a key factor in evaluating wearable devices. To compare sleep tracking performance, we analyzed data from Luna, Whoop, Samsung Watch, and Oura over a set period. This report evaluates how closely these devices align in measuring sleep start, sleep end, REM sleep, and deep sleep, highlighting key insights and discrepancies.

Sleep Start and End Time Analysis

The following graphs compare sleep start and end times across devices, showing how closely they align over multiple days. Most devices recorded sleep start times within the range of 10:00 PM to 2:30 AM, and wake-up times varied between 5:00 AM and 12:00 PM.

Sleep Start Time Comparison

Sleep End Time Comparison

REM Sleep Analysis

REM sleep duration varied across devices. Luna and Whoop displayed the closest REM duration values, while Whoop demonstrated higher variability. Samsung Watch and Oura had some discrepancies compared to Luna and Whoop.

REM Sleep Duration Across Devices

Deep Sleep Analysis

Luna and Whoop displayed relatively close deep sleep duration values. Samsung Watch recorded higher deep sleep values than the other devices, indicating a possible difference in measurement criteria. Oura’s deep sleep values followed a stable trend and showed alignment with overall sleep tracking trends.

Deep Sleep Duration Across Devices