Deepinder Goyal Launches Temple Wearable, Claims High Heart Rate Accuracy
- Deepinder Goyal has launched Temple, a head-worn health and performance wearable priced at ₹85,000.
- Temple’s pre-orders opened on November 1, with first deliveries expected in around three months.
- The company claims Temple recorded lower heart-rate errors than five flagship wearables in its internal comparison
- Temple also tracks cerebral blood flow and oxygenation and generates an Entropy score for physiological strain.
Zomato founder Deepinder Goyal has launched Temple, a head-worn health and performance wearable that tracks physiological signals including heart rate, cerebral blood flow and oxygenation.
The device opened for pre-orders in India on November 1 at ₹85,000, with the first made-to-order units expected to reach customers in around three months.
Temple’s launch comes with a focus on heart rate tracking. Goyal has shared results from an internal study in which Temple was compared with five flagship wearables, including Apple Watch Series 12, Garmin FR970, Fitbit Air, WHOOP MG and Oura Ring 5. According to the company’s findings, Temple recorded lower heart rate measurement errors across the tested exercise zones, including high-intensity Zones 4 and 5.
Temple Uses Head-Worn Sensors for Heart Rate and Brain Signals
Unlike smartwatches and fitness bands that sit on the wrist, Temple is attached to the side of the head using adhesive grips. The company says the placement, near the superficial temporal artery, provides a stronger signal during physical activity while reducing movement and contact issues associated with wrist-based devices.
For its heart-rate comparison, Temple used a Polar H10 chest strap as the reference and compared readings second by second from resting conditions through maximum physical effort. Goyal said the taped chest strap was used to prevent contact loss during sprints. The company’s reported results put Temple’s average heart-rate error at around 1.5 bpm at rest, falling to roughly 0.9 bpm in Zone 5.
The findings, however, are based on a Temple-conducted study and have not yet been independently verified. Goyal has said that the company has published its paper and data and that an extended study by independent researchers is underway.
Beyond heart rate, Temple’s primary technology is called BrainFlow, which uses optical sensing to monitor changes associated with cerebral blood flow and oxygenation. The device also generates an Entropy score, designed to indicate physiological strain and provide users with information related to exercise, stress and recovery.
Temple Pre-Orders Open at ₹85,000
Temple is being offered through a made-to-order model at ₹85,000, with lifetime access to its app features included. The package also includes personal onboarding, lifetime supplies of grips, a charging pod and device replacement benefits at a nominal fee, according to product information reported after the pre-order launch.
The launch generated heavy traffic on Temple’s website shortly after pre-orders opened, temporarily affecting access. Goyal said orders continued to work through the company’s app before the website was restored.
The product is being positioned toward athletes and users interested in detailed physiological monitoring rather than as a conventional smartwatch. Temple is designed for wellness and research purposes and is not intended to replace medical testing.
FAQs
What is Temple by Deepinder Goyal?
Temple is a head-worn health and performance wearable designed to track heart rate, cerebral blood flow, oxygenation and other physiological signals.
How much does Temple cost?
Temple is priced at ₹85,000 in India, with lifetime app access included.
How accurate is Temple's heart-rate tracking?
In the company's internal study, Temple recorded an average error of roughly 0.9 bpm in Zone 5. The findings have not yet been independently verified.
When will Temple orders be delivered?
The first made-to-order units are expected to be delivered in approximately three months.
Is Temple a medical device?
No. Temple is positioned as a wellness and research wearable and should not be considered a replacement for clinical testing.
