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Mindfield Slider eSense Pulse

Mindfield® eSense Pulse | optimal HRV Biofeedback

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Biofeedback with the eSense Pulse!

The Mindfield eSense Pulse is a small sensor to measure your heart rate variability with your smartphone or tablet (Android or Apple iOS).

The heartbeat is related to tension and relaxation and is a potential stress indicator. With the eSense Pulse you can measure and effectively reduce your stress level with biofeedback training. The eSense Pulse gives the user precise feedback about the current level of stress in a variety of forms, e.g. through measurement curves, video and audio presentation. With the eSense Pulse we have decided on a chest strap, which performs a 1-channel ECG measurement. 

The eSense Pulse measures heart rate variability and, optionally with new eSense Respiration sensor, respiratory rhythm. The app belonging to the eSense is completely free of charge and also allows an export of the collected measurement data as CSV file or PDF report (eg via e-mail, Dropbox or Google Drive).


Heart Rate Variability

Heart rate variability (HRV) refers to the ability to change the frequency of the heart rhythm. Even at rest, there are spontaneous changes in the time between heartbeats.

A healthy person constantly adapts the heart rhythm to current requirements. In addition to physical exertion, such as sport or physical work, psychological exertion such as stress also results in an increase in the heart rate. The heart rate sinks again when the strain is relieved and the body relaxes. In humans, heart rate variability ranges from 10 (low, a sign of stress) to 30 (high, a sign of relaxation).

The more our body is able to regulate the heart rate (the greater the heart rate variability), the healthier we are. If the heart beats only rigidly, a person is about to die.

The measurement of heart rate variability is a large field in cardiology, sports and coaching and is used for extensive research. With the eSense Pulse, we want to focus on biofeedback training, i.e. improving heart rate variability. To describe the current state and progress of the training, the eSense app also provides the essential statistics and analyses of HRV.


Heart Rate Variability and Biofeedback Training

The aim of HRV biofeedback is to increase heart rate variability, specifically its amplitude. In other words, to maximize the difference between low heart rhythm and high heart rhythm in the interplay of inhalation and exhalation, rest and demands.

If respiration is included, the eSense App offers various ways to visualize it and to define respiration in a certain rhythm. The coupling of heartbeat and respiration is greatest in most people when breathing at about 4.5 to 6.5 breaths per minute.


Downloads of eSense Pulse



Download our eSense app

eSense app from Mindfield

Icon eSenseThe eSense comes with the eSense app which you can load for free in the in the Google Play Store (Android) or the Apple App Store (iOS). The app contains a variety of functions for an effective biofeedback training in a modern design. Essential function are the display of the measured values app as bargraph and oscilloscope, a feedback by video, music, tones, vibration and by light via a bluetooth smart bulb.

Apple App Store Google Play Store


eSense SDK and eSense Web App

You can also create your own apps with our SDK. We have also developed the eSense Web App which allows you to stream your measurement data directly to a PC.


eSense Pulse & eSense Respiration

The eSense Pulse can be combined with the eSense Respiration and used simultaneously. Your breathing is a stimulator for your heartbeat and therefore combining both eSense sensors can take your training to the next level.


Procedures (inside the eSense App)

A Procedure consists of several assembled modules. A module can be for example a picture, a video, some music, a bargraph, an arrow or others. You can assemble the modules in any length to a fixed procedure. Some contain biofeedback-functions (that means they reflect the changes in your measured values from the eSense), some don't. With this feature you can build the perfect individual relaxation guide, a stress test, a predefined biofeedback training or use it for your own research. There are many possibilities. During a procedure, your pulse will be recorded. Afterwards you see your results for each module and in total and you can export those to Excel for further analysis.

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Kubios HRV Premium Software


Many of our customers are interested in combining the eSense Pulse with the Kubios HRV Premium Software. This combination is suitable for scientific research as well as for the professional use as a biofeedback trainer. The Kubios HRV Premium Software offers you detailed HRV-analysis with its over 40 analysis parameters and can be perfectly combined with the eSense Pulse.


Account and Cloud (optional, no obligation)

You can register your own account for the eSense app and book plans. With these you can mainly use the cloud and its functions and get also access to the eSense web app at

With the basic plan, you can save your measurements locally and online in the cloud and thus access your measurements from all devices and from anywhere. You also get access to the eSense web app

The Premium Plan includes all functions of the Basis Plan. In addition to your measurements, you can also save your procedures online in the cloud and thus access your procedures from all devices. (Attention: Technical limitations from Apple unfortunately do not allow the upload (and thus the synchronization) of audio files. The synchronization of picture and video files is possible, however).

With the basic plan, you can save your measurements locally and online in the cloud and thus access your measurements from all devices and from anywhere. You also get access to the eSense web app

The Premium Plan includes all functions of the Basis Plan. In addition to your measurements, you can also save your procedures online in the cloud and thus access your procedures from all devices. (Attention: Technical limitations from Apple unfortunately do not allow the upload (and thus the synchronization) of audio files. The synchronization of picture and video files is possible, however).

You can also share your measurements with other users. You also have the option to transfer your data to the eSense Web App in real time.

Choose the Pulse for

  • Racing heartbeat, chest tightness
  • Chronic generalized stress
  • Difficulties relaxing
  • Rapid shallow breathing
  • Low daily energy


The eSense Pulse with the eSense App offers you

  • A precise 1-channel ECG with 500 Hz sampling (internal)
  • Transmission of RR distances in milliseconds at 5 Hz via Bluetooth Low-Energy
  • A chest strap that is comfortable to wear, washable and durable
  • Optimal skin contact with the help of supplied electrode spray
  • Theoretically unlimited recording time (but some smartphones and tablets have problems with saving sessions which are longer than 2 hours. So there is no guarantee for recordings longer than 120 minutes and 24-hours measurements are impossible)
  • Unlimited number of sessions and users 
  • Extensive statistics on heart rate variability (time and frequency data)
  • Real-time Fast Fourier analysis with spectrogram
  • Breathing aid for breathing training with freely adjustable intervals, auxiliary tones and more
  • Export of measurement data as CSV file, compatible with other software programs for further analysis (e.g. Kubios)
  • Export of curves, diagrams and statistics as a PDF report.
  • To train and improve HRV, the app offers a wealth of biofeedback feedback on HRV amplitude: Bar feedback (HRV or breathing aid), Curve feedback (HRV and breathing aid), Video feedback (videos included and your own videos may be used), Music feedback (music included and your own music may be used), Tone feedback (change of pitch by the measured values), Tactile feedback through vibration (only smartphones, tablets cannot vibrate), Feedback from smart bulbs (Bluetooth bulb and Philps Hue products are controllable.)
  • Set any number of markers during a recording
  • Different, premade training procedures are included in the app
  • Free training according to your wishes with any biofeedback variant or several at the same time
  • Extensive in-app help and manuals
  • Regular updates of the app
  • Integration with our eSense Respiration to record respiration during the HRV measurement


Video of the eSense app


Quick Guide to Usage

  • When you buy the eSense Pulse you can download our free app from the App Store (Apple®) or Google Play (Android).
    (You can also download it in advance, but the app can not be effectively used without the sensor)
  • Put on the chest strap as shown in the manual and adjust it to the correct length. The strap should be tight, directly under the chest muscles, but not uncomfortably tight or squeezed. 

  • Once you have adjusted the belt, remove it again to apply a small spray of the enclosed electrode contact spray to each electrode (but avoid 'bridging' as shown in the manual).
  • Start the app and click "Start", the measurements will begin.
  • Please carefully read the instructions within the app or the manual to get the best out of biofeedback training.
  • Have fun with the eSense Pulse! 


For whom is the eSense suitable?

  • Mainly for home users
  • For professional users (biofeedback trainers / therapists)


Which iOS Devices are Supported?

    All iOS devices from version 12.5 or higher, which are (in part):
  • Apple® iPhone® 5S, iPhone® 6 / 6S, iPhone® SE / SE 2, iPhone® 7/7 +, iPhone® 8/8 +, iPhone® X, iPhone® XR, iPhone® XS, iPhone® 11/11 Pro, iPhone® 12/12 Pro
  • Apple® iPad® from 5th generation (iPad Air) or newer, including all iPad Mini from 2nd generation
  • Apple® iPad® Pro from 1st generation or newer
  • Apple® iPod Touch® from 6th generation or newer


Which Android Devices are Supported?

  • All Android Smartphones and Tablets from Android 7.0 (Nougat)
    Your Android device requires bluetooth
  • If you plan on purchasing a device for using the eSense, we suggest the Nokia 2.4 as an affordable smartphone.


Included in Delivery

  • Mindfield® eSense Pulse Sensor incl. battery (lasts approx. 1 year)
  • Electrode contact spray
  • eSense App from Mindfield (Apple App Store, Google Play or Amazon App Store)
  • Detailed instructions for effective biofeedback training

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Screenshots of the eSense app

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eSense App eSense App


Comparison eSense Pulse and Bittium Faros 180

Our eSense Pulse is especially suitable for short measurements. For long-term measurements we also have the Faros 180 in our assortment. We have done a 10-minutes measurment with both devices for comparison. You see a high precision and consistency of the data collected in parallel on a person. The graphs are so exactly on top of each other that the graph below in blue is barely visible: 

eSense Pulse vs Faros 180 eSense Pulse vs Faros 180


Magic Blue smart bulb (optional)

Magic Blue Bulb

The Magic Blue is a smart bulb which can be controlled via Bluetooth. The color as well as the brightness can be adjusted. This enables you to use the light from the bulb as an indicator of your level of stress or relaxation in combination with the eSense Skin Response or eSense Temperature.

From within the eSense App, you can connect to the Magic Blue and use it in your biofeedback session. Depending on the state of your relaxation, the bulb can show different colors or a different brightness or a combination of both.

You can purchase the Magic Blue here:


Technical Details

  • Sample frequency (internal): 500 Hz, RR intervals with 5 Hz to eSense App
  • Measuring range: 30-240 BPM +- 2 BPM
  • Internal error correction 
  • Operating range: 5-40 °C, <= 95% relative humidity
  • Belt made of polyamide and conductive silicone + TPU for the electrical contacts

Apple, iPhone, iPad, iPod touch are trademarks of Apple Inc., registered in the U.S. and other countries. | IOS is a trademark or registered trademark of Cisco in the U.S. and other countries and is used under licence.


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Read More: eSense Respiration | eSense Skin Response | eSense Temperature | eSense Muscle
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