Introducing FITTR HART

The HRV And Recovery Tracker

Discover the groundbreaking technology that helps you optimise your sleep, improve your recovery, and unlock the secrets to longevity.

One ring to track them all

Here are the key metrics tracked by this groundbreaking technology

Sleep duration & quality

Optimise your sleep habits and improve your overall well-being while tracking your sleep depth


Physical performance

Personalised activity targets based on your recovery to help improve your performance


HRV holds the secret to your longevity

Monitor your heart rate variability (HRV) with the FITTR HART smart ring and follow these tips to improve it

  • Stay active with regular exercise
  • Get adequate and quality sleep
  • Manage stress with techniques like meditation
  • Eat a balanced and healthy diet rich in whole foods and protein
  • Avoid habits like smoking and excessive alcohol

Book your FITTR HART smart ring now

Preorders for FITTR HART start from 4th March 2023. Purchase now for an exclusive 20% discount and pay only ₹15,199 instead of ₹18,999! Otherwise, pre-book FITTR HART at just ₹500. Your ring will be delivered in approximately 2-4 months from your order date on a first-come, first-serve basis.

Sustainable materials

We care for the environment as much as we care for your health!

Made In India 🇮🇳

We’re #DilSeDesi every step of the way, so your data never leaves our borders!

90-Day return policy

We do everything we can to ensure your satisfaction. If something’s not right, we’ll fix it!

Free shipping

Pay a one-time fee for FITTR HART and we’ll deliver it to your doorstep at no cost!


Catch a glimpse of FITTR HART

Expertly designed to look perfect for every occasion


Frequently asked questions

HRV, or heart rate variability, is a measure of the variation in time between consecutive heartbeats. It's an important biomarker that can provide insights into your body's stress response and recovery capacity.

FITTR HART uses advanced sensors and algorithms to measure HRV and provide accurate and reliable data.

By tracking HRV, sleep, activity, recovery, and other metrics, FITTR HART can help you optimise your health and well-being, potentially promoting longevity.

FITTR HART will be delivered in approximately 2-4 months from the preorder date on a first-come, first-serve basis.

FITTR HART's finger-wearable form factor will help you better understand how your body responds to different types of activity and exercise. You can track changes in your heart rate, calories burned, and sleep patterns to identify how specific activities affect your body.This information can help you optimise your workouts and make more informed decisions about your health. By adjusting your lifestyle based on the insights provided by your wearable smart ring, you can improve your overall health and increase your longevity.

By choosing a finger-wearable like FITTR HART, you will gain long-term benefits as you identify trends in your health over time. The smart ring will track your biometrics consistently, allowing you to identify changes in your health that may occur over months or even years. This can help you identify areas where you may need to make lifestyle changes or seek medical attention. By catching potential health issues early, you can take steps to address them before they become major problems. Apart from this, FITTR HART provides a wealth of insights into your body that can help you make informed decisions about your health. By tracking biometrics such as blood oxygen levels and body temperature, FITTR HART can provide valuable information about your overall health and help you identify potential health issues before they become major problems. By using this information to optimise your workouts and make informed decisions about your health, you can improve your longevity and enjoy a healthier, happier life.

The FITTR HART smart ring comes in 5 size options so you can find the perfect fit for your finger!
The Extra Small option fits ring sizes 5–7.
The Small option fits ring sizes 7–9.
The Medium option fits ring sizes 9–11.
The Large option fits ring sizes 11–13.
The Extra Large option fits sizes 13-15.
Note: You don't have to wear FITTR HART on a particular finger! It will work on any finger as long as it fits snugly.

All purchasers will receive a FREE sizing kit to help us personalise the ring size just for you. This sizing kit can help you find the most accurate and comfortable fit for your ring, ensuring comfortable wear throughout the day and night.

FITTR HART is designed to last for a full 8 days on a single charge. Moreover, the ring's case can charge the ring up to 3 times, which means you can extend the usage time up to 24 days before recharging!

The FITTR HART smart ring can function underwater up to a depth of 10 metres. Additionally, we use high-quality materials to ensure durability and longevity. The FITTR HART ring is also designed by experts to ensure a stylish finish, making it a perfect fit for any occasion—from adventure sports to a casual day out!

A) Heart Rate: The FITTR HART smart ring is worn on the finger, making the heart rate calculated by its optical sensors more accurate than wrist-worn sensors. The accuracy of the FITTR HART ring's heart rate measurement is comparable to that of an EKG sensor worn on the chest.

B) Sleep: FITTR HART's sleep algorithm uses a combination of movement and Heart Rate Variability (HRV) to provide insights into the user's sleep. The FITTR HART ring can calculate the user's sleep stages with a 70% agreement with clinical polysomnography (PSG).

C) HRV: The HRV calculated by FITTR HART is at 200Hz, higher than any other heart rate variability monitor currently on the market. This provides exceptional information about the state of the user's heart and how it's being affected by their activities.

D) Calories: FITTR HART's custom-designed calorie algorithm uses movement and cardiac information to decode the user's MET values, which are a method to measure the human body's energy expenditure.

E) Blood Oxygen Measuring blood oxygen is most effective through the finger, which is why pulse oximeters have utilized this method for years. HART is similarly capable of measuring blood oxygen in this way, with sensors specifically calibrated to monitor your blood oxygen levels throughout the day. To ensure accurate results, it's important to remain still while the sensor takes measurements, as any movement could introduce noise and compromise the accuracy of the readings.

F) Skin Temperature HART measures the temperature of the skin at the base of the finger. Although skin temperature cannot accurately determine your true body temperature, variations in it can indicate important aspects about your body. For example, if someone notices a sudden increase in their skin temperature, it could indicate an oncoming fever. Armed with this knowledge, they can take proactive measures to address the situation before it worsens. Similarly, tracking changes in skin temperature can help younger women better understand their menstrual cycle and make informed decisions about their reproductive health.

G) Steps and Activity HART boasts a specialized processor designed specifically for motion capture, providing crucial insights into steps taken and overall activity levels. This technology allows the ring to track every move that the wearer makes with precision and accuracy. The cutting-edge algorithm is capable of automatically detecting specific movements, such as walking, running, or exercising, and records data at a more frequent interval, resulting in highly precise calculations of caloric expenditure for each activity. This level of detail is invaluable for individuals looking to optimize their health and fitness, as it allows them to track their progress with a high degree of accuracy. Overall, HART's motion capture technology is a game-changer for anyone seeking to improve their fitness levels and gain a deeper understanding of their body's movements and overall health.

Tip: To improve the accuracy of the calorie count measurement, users should set the type of workout they're doing so that FITTR HART can automatically update to suit their metabolic rate.

When wearing the FITTR HART smart ring, your comfort is our priority. The design of the smart finger-wearable device has been carefully crafted to ensure that it can be worn comfortably in any situation. However, there are certain situations where it is recommended that you avoid wearing the ring to ensure your safety and the longevity of the ring. For example, it is not recommended to wear the FITTR HART smart ring while in a hot-tub, steam room, sauna, or similar environment, as the high temperature, humidity, and the presence of any chemicals could potentially damage the ring or interfere with its functionality. Similarly, if you plan on deep-sea diving or swimming in depths greater than 10 metres, it is advised to leave the ring on dry land, as it is not designed to withstand the water pressure at those depths.

FITTR HART is compatible with devices running Apple iOS (version 14 and higher) and Android (version 12 and higher). In the future, we aim to develop FITTR HART further and make it compatible with Apple Watch and Google Wear devices. Keep an eye out for the latest updates!

The package you will receive contains the FITTR HART smart ring of your selected size and a portable charging case with a 100mAh battery capacity. The charging case comes with a USB-C charging cable, which ensures that you can charge your ring and case from any device with a USB port. Additionally, the package includes a detailed manual that provides all the necessary information for setting up and using the ring and charging case, as well as warranty details that guarantee the quality of our product.

After purchasing the FITTR HART smart ring, your user journey will involve setting up the device, using the FITTR app to track progress, and adjusting your lifestyle to achieve your health and fitness goals.

A) Setting up the device involves charging it and downloading the FITTR app onto a smartphone or tablet. Pairing the device with the app is done through simple on-screen instructions.

B) Using the FITTR app to track progress will help you check data about your activity levels, sleep patterns, and other biometric data. Goals such as daily activity or hours of sleep per night can be set within the FITTR app to track progress.

C) Making adjustments to your lifestyle is important for achieving your goals. Personalised recommendations based on biometric data will be received from the FITTR app to help set the right workout and nutrition plans and achieve your goals.

With FITTR HART and the FITTR app, you will have the necessary tools to continue your wellness journey and achieve a healthier, happier life.

Yes, you can! The shipping charges for delivering FITTR HART to non-Indian addresses vary depending on the country of delivery and a few other factors. To know the specific charges and payment procedure for your order, first place your order and enter your overseas address accurately and in detail during checkout. Then, wait for our support team to reach out to you over call or email.

Consumer protection

In compliance with Consumer Protection (E- Commerce) Rules, 2020 and the Information Technology Act, 2000 and rules made thereunder, the details of the Grievance Officer and the Nodal Person are mentioned below:

Nodal Person

Aditya Sehgal

Corporate Lawyer


411, Platinum Square, Viman Nagar, Pune, Maharashtra - 411014

Grievance Officer

Shashank Lalwani

Head of Operations


411, Platinum Square, Viman Nagar, Pune, Maharashtra - 411014