US-based sleep tracking technology developer Beddr received $5.6m on Tuesday in a series A round that featured Stanford-StartX Fund, an investment vehicle affiliated with Stanford University.

Healthcare-focused VC firm Three Leaf Ventures led the round, with participation from dental insurance provider Delta Dental of Washington’s Seed Fund, as well as venturing firm IT-Farm and unnamed angel investors.

Founded in 2016, Beddr is releasing a sensor-based sleep tracking device called SleepTuner that traces the customer’s position and breathing rhythm throughout their slumber to offer guidance based on sleep science.

As well as severe fatigue, trouble sleeping can put people at greater risk of conditions including type 2 diabetes, hypertension and depression.

SleepTuner uses a clinical-standard sensor to wirelessly feed sleep data into a predictive analytics-powered smartphone app that outlines potential issues such as blood oxygen saturation or spikes in heart rate.

The cash will aid preparations for SleepTuner’s commercial launch, in addition to research and development in other areas of sleep health. Beddr is aiming to build a comprehensive platform with the ability to contact sleep physicians and access personalised treatments.

Beddr has not publicly disclosed details of earlier funding, though it had previously taken part in Stanford’s StartX accelerator.