Real-time HRV, heart rhythm, and breathing biofeedback.
About Nami - Biofeedback & HRV
Nami - Biofeedback & HRV is a health & fitness app developed by Nossobit Ltda.
Download Statistics
Nami - Biofeedback & HRV has been downloaded 18 thousand times. In the last 30 days, the app was downloaded 640 times.
User Ratings
Nami - Biofeedback & HRV is rated 3.80 out of 5 stars. The rating is based on 65 ratings.
App Information
Nami - Biofeedback & HRV is FREE to download. The APK download size is 54.21 MB. The latest version available is 2.0.6. The last update was on June 24, 2026.
Technical Requirements
Nami - Biofeedback & HRV requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play September 2016.
Description
Nami – Biofeedback & HRV
Nami helps you watch your heart signals while you breathe. It can use a Polar heart rate sensor, your phone camera, or the microphone to show your heart rhythm on the screen, helping you practice calmer breathing and keep a record of your sessions.
For deeper use, Nami also includes HRV metrics, real-time charts, breathing guides, biofeedback games, custom web experiences, phonocardiogram tools, session history, and data export.
See your heart rhythm. Train breathing with feedback. Explore your signals over time.
REAL-TIME BIOFEEDBACK
Nami shows live physiological signals during each session.
Instead of only giving you a final score, Nami lets you see how your heart rhythm and breathing response change in real time. This makes practice more intuitive, because you are not just following instructions — you are observing your own response.
BREATHING AND HRV TRAINING
Use Nami to practice breathing with real feedback from your heart rhythm.
You can follow guided breathing sessions, observe rhythm changes, train coherence, and review how your signals changed during each session.
HEART RHYTHM AND HRV METRICS
Go beyond basic heart rate.
Nami lets you explore heart rhythm and HRV metrics such as:
These metrics help you observe patterns across sessions, compare averages, and understand how your signals change over time.
MULTIPLE SENSOR OPTIONS
Choose the sensing method that works best for you:
• Polar and compatible Bluetooth heart rate sensors • phone camera pulse sensing • finger-on-camera mode • microphone-based heart sound observation • supported wearable and external flows
No single sensor is required for every use. You can choose the setup that fits your session.
PHONOCARDIOGRAM EXPERIENCE
Use the microphone to explore heart sound patterns.
Nami includes a phonocardiogram experience with waveform and spectrum views, helping you observe heart sounds and signal behavior in a visual way.
BIOFEEDBACK EXPERIENCES
Nami is more than a chart screen.
You can choose different session experiences, including:
• free real-time signal sessions • guided breathing • phonocardiogram • biofeedback games • custom web experiences
This makes Nami useful for personal practice, experimentation, education, and research-oriented workflows.
CUSTOM WEB EXPERIENCES
Open a custom webpage during a session and combine it with live physiological feedback.
This can be useful for custom protocols, learning tools, experimental interfaces, guided content, or external biofeedback workflows.
SESSION HISTORY AND DASHBOARD
Each session becomes a record you can review.
Nami lets you see session averages, trends, body markers, state before session, detailed graphs, samples, and recorded signal behavior over time.
DATA EXPORT
Export your session data when you want to analyze it outside the app.
Nami is designed for users who want control over their data, from simple breathing practice to deeper signal exploration.
CONFIGURABLE FOR ADVANCED USE
Nami includes settings for sensors, charts, breathing pacing, runtime displays, session behavior, data recording, and export.
It can be simple when you want a quick session, and flexible when you need more control.
PRIVACY
• no account required • your data stays on your device • optional Google login • no unnecessary data sharing
IMPORTANT NOTE
Nami is not a medical device and does not provide diagnosis, treatment, or medical evaluation.
Results depend on sensor quality, signal conditions, and proper use.
Nami is a biofeedback and self-observation tool for breathing practice, HRV exploration, heart rhythm awareness, physiological signal tracking, and configurable real-time feedback sessions.
Recent changes: Updates and improvements: • Enhanced performance and stability. • Refined user interface for better readability and interaction. • Improved signal processing accuracy. • Fixed minor bugs and optimized resource usage.
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This is a very good app and have been working with it for 3 days now. I will repost again later with details. For now this is only app which gives you detailed reports. Edited with 15 days use. My rating remains same. Gives graphical plot of frequency domain and time domain analysis. Tracks and gives trend report. It will be added improvement if frequency domain report data is given in numbers such as power in LF HF Etc...also if some help pages describing charts. Could u plz tell what is coherence score indicate?
★★★★★kyle Hughes· Aug 27, 2025
This totally worked for me, on my Galaxy watch 7. I downloaded the app for both my phone and my watch. And then in the app under sensors I selected wear. And then for device it automatically selected wear. Next I went to sessions and selected breathing, and it absolutely recorded and then displayed my heart rate variability. And I've been trying for about an hour to find an app that would do this that didn't want me to pay $20 a month every month. And this app does it for free! I'm very impressed
★☆☆☆☆P E· Jul 2, 2020
App constantly crashes. Unusable. Plus can connect my HR strap.
★☆☆☆☆Ted Gledhill· Jun 18, 2020
Useless on note 4! Tried mic, front camera and rear camera. All bpm we're totally inaccurate. Also doesn't utilize built in heart rate sensor. No explanation of what results mean.
Google Play Rankings for Nami - Biofeedback & HRV
This app is not ranked
Technologies used by Nami - Biofeedback & HRV
Nami - Biofeedback & HRV is requesting 31 permissions and is using 25 libraries.
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