Quick Summary
- Temple, the wearable startup founded by Deepinder Goyal, says its device outperformed several established wearables in a heart-rate accuracy comparison.
- The company funded and conducted the study, which was limited to a single site in Gurugram and treadmill running rather than many daily activities.
- The findings have not been peer-reviewed, so they should be treated as company-reported results rather than independent proof of overall device superiority.
What the comparison claims
Temple has published a study claiming that its wearable measured heart rate more accurately than products including the Apple Watch Series 12, Fitbit Air, Whoop MG, Garmin Forerunner 970 and Oura Ring 5. The company was founded by Zomato chief executive Deepinder Goyal and positions its device as a new approach to wearable health measurement. The comparison has attracted attention because it places a relatively new product against established devices with large user bases.
The study’s limitations are central to understanding the claim. According to The Economic Times, Temple funded, ran and analysed the research. It was conducted at a single site in Gurugram, involved one session per participant and focused on treadmill running. It did not test cycling, strength training, outdoor running or ordinary daily activity. The white paper has not been peer-reviewed, which means independent researchers have not yet assessed its methods and conclusions through a formal publication process.
Those details do not automatically invalidate the results, but they limit what can be inferred from them. A device that performs well during a controlled treadmill session may behave differently during activities that involve rapid wrist movement, changes in temperature, different body positions or intermittent exertion. Heart-rate sensors are affected by fit, skin contact, motion and the way each device processes the optical signal.
Why wearable accuracy is difficult to compare
Consumer wearables generally estimate heart rate using optical sensors that detect changes in blood volume near the skin. The algorithms must separate the pulse signal from movement and other sources of noise. A device can produce a stable reading during a predictable exercise session but struggle when the user changes pace, lifts weights or moves their arms in ways that interfere with the sensor.
A meaningful comparison needs a clearly described reference measurement, consistent device placement, enough participants and repeated tests across different activities. It should also report how accuracy is calculated. Average error, percentage of readings within a defined range and the frequency of large deviations can tell different stories. Without those details, a single headline ranking may conceal important differences in performance.
Consumers should also distinguish heart-rate accuracy from the broader quality of a health wearable. Battery life, comfort, software reliability, sleep tracking, exercise detection, data export and integration with other services all influence whether a product is useful. A strong result in one measurement category does not establish that a device is better across every health or fitness feature.
Temple’s findings would carry more weight if the company published its full methodology and underlying data, followed by independent replication. Researchers could test the devices across multiple exercise types and daily activities, compare them against a clinical-grade reference and publish the error distribution rather than a single aggregate score. Such testing would help determine whether the result reflects a real sensor advantage or the specific conditions of the study.
The company’s announcement is still relevant because it shows how new wearable makers are trying to challenge established brands through measurable performance claims. But buyers should not interpret the comparison as a clinical validation or a guarantee of accuracy for every user. The responsible conclusion is narrower: Temple reports a positive result in a limited, company-run test, and the claim needs broader independent evidence.
The comparison needs independent testing
A heart-rate comparison is only meaningful when the devices are tested under the same conditions and the reference measurement is reliable. Wrist movement, skin contact, exercise intensity, sensor placement and the way a test defines an error can all affect the result. A device can perform well in one controlled activity and behave differently during everyday use, strength training or sleep. The published figures should So be read as a result from the reported test, not a universal ranking of every wearable.
Temple will need to show that the result can be repeated across more participants, different skin tones, a wider range of activities and longer periods of wear. It will also need to explain how the product handles missed readings and whether its measurements are intended for general fitness tracking or any clinical purpose. Until independent reviewers can examine the method and reproduce the findings, buyers should compare the device on comfort, battery life, software support and the features they actually use.