RTPL smart ring improves sleep
- November 11, 2025
- Steve Rogerson

Australian firm RTPL has launched a smart ring to help people improve sleep and overall wellbeing.
Building on a legacy of more than 25 years of research at Flinders University, the company has widened its offering in the sleep wearable space with the Retimer Ring.
RTPL first gained recognition in 2015 with its blue-green light therapy glasses, which continue to help thousands of people around the world with circadian sleep problems – delayed sleep, jet lag, shift work – and reclaim better sleep. In 2018 it introduced the Thim, a sleep ring for insomnia, based on its patented intensive sleep retraining.
While smart rings are rapidly becoming the future of health tracking, offering greater accuracy and more comfort than wrist-based devices, the company is looking far beyond just monitoring. With the Retimer Ring, RTPL is leveraging its legacy, and the progress in sensor technology and AI, to offer sleep, health and activity tracking, with more features planned for circadian health, apnoea and insomnia.
“Retimer Ring isn’t just another ring, it’s your daily companion for a better life; and that’s just the beginning of what will be a holistic wearable to not just track your sleep and activity but also offer research-based programmes to improve wellbeing,” said Nitin Goyal, RTPL COO. “By combining bio signals, proven therapeutic processes, and using the power of AI, we can guide users with subtle cues, insights and interventions to significantly improve wellness outcomes. I am very excited with the possibilities this form offers.”
Features include:
- Comprehensive sleep tracking: More than 12 sleep parameters, including stages, efficiency, latency, sleep score and debt.
- Health and fitness monitoring: Heart rate, HRV, blood oxygen, skin temperature, VO2 max, steps, calories and stress response.
- Sugar metabolism indicator: Non-invasive system to track glucose trends.
- Eight-day battery life and titanium build: Durable, waterproof (5 ATM), and crafted for everyday wear.
- Zero subscription fees: No fees for the smart app.
- Access to future updates: This includes support for insomnia, sleep apnoea detection, circadian rhythm optimisation and mental wellness tools for stress, anxiety and night-time rumination.
“At Flinders University, we’ve dedicated decades to understanding the complexities of sleep,” said Leon Lack, a professor at Flinders University. “Our research has always focused on translating scientific discoveries into practical, accessible treatments to help people sleep better. In 2018 we launched the Thim, first ever smart ring to track sleep and provide a treatment for insomnia. The device was based on nearly 15 years of research with the use of a condensed form of the earliest proven behavioural treatment for insomnia. This resulting therapy was patented as intensive sleep retraining therapy in 2017. The Retimer Ring is an innovative step forward to make the ISR therapy available for the treatment of insomnia in future.”
The ring is available in a chic colour palette of Twilight Rose, Full Moon Silver and Midnight Black in seven sizes. The Retimer Ring is available to be booked at www.retimer.com.au/ring/.
RTPL (www.retimer.com.au) is a collaboration between Motherson (www.motherson.com), a design, engineering and manufacturing firm, and Flinders University (www.flinders.edu.au) with its sleep sciences research centre.










