Abstract Introduction Consumer sleep trackers (CSTs) are increasingly used for daily sleep monitoring, yet their performance in real-world home environments remains insufficiently characterized. Most existing validations have been conducted in controlled laboratory settings, which may not fully reflect everyday sleeping conditions. This study aimed to evaluate the accuracy of five common CSTs, including two smartwatch-based, two ring-based, and one airable device, by directly comparing their measurements against simultaneously collected home polysomnography (PSG) in participants’ habitual sleep environments. Methods Eight adults participated, each undergoing overnight monitoring in their typical home setting while minimizing external noise and ensuring single-sleeper conditions. Five CSTs (Apple Watch, Galaxy Watch, Galaxy Ring, Oura Ring, and Sleep Routine) were worn concurrently along with a type 2 home PSG device (Embletta MPR PG 0.1 min) and the lowest MAE (1.0 min). Conclusion In real-world home environments, all CSTs demonstrated generally high performance, with every device achieving a macro F1 score above 0.70. These findings indicate that CSTs can achieve reliable performance under naturalistic yet controlled home conditions, while also showing performance differences across device types and sensing modalities. Larger and more diverse studies will further enhance the generalizability of these results. Support (if any)
Kim et al. (2026) studied this question.