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A revolutionary way to measure and track your metabolism. Just by breathing. Seamless design + brilliant science.
Breezing Team
Phoenix, Arizona
United States
3 Team Members

Thank you so much for supporting us during our campaign! At this time, we are no longer accepting pre-orders on Indiegogo. For further inquiries, you can contact us at info@breezing.co


  • more at the bottom of this page...

Meet Breezing.

For the first time ever, a metabolism tracker that syncs with your smartphone. Brought to you by a team of dedicated researchers and engineers, Breezing combines innovative design with proven science. 

Pick a color




Metabolism matters.

Your metabolism determines what your body needs just to sustain life. For most people, 70-80% of the calories you burn comes from metabolism - not exercise.

Everyone’s metabolism is different. And your metabolism can change over time. Age, weight, body composition, and hormones are intricately connected to metabolism. That's why tracking your metabolism is so important. 

Just breathe.


Breezing tells you: 

Your Metabolism REEding (Resting Energy Expenditure): The number of calories your metabolism burns everyday

Your Body's Energy Source: Whether you're burning carbohydrates, fats, or a mix of both

Your Total Energy Expenditure: The total number of calories you burn (metabolism + activity level) depending on how active you are.

Your Metabolic HistoryYour metabolism over time, so you can see changes easily.

Your Weight History: Your weight progress, showing you how it corresponds with your metabolism. 

                   Know your REEding

(Why does the app look different in the video? Since the filming of the video, we've improved our app's user interface to make it even easier to use.)

Personalized Feedback.

Based on your unique metabolic profile and individual goals, Breezing gives you diet and exercise advice customized to your needs.


Connecting + Sharing.

The Breezing app lets you share results through e-mail, Facebook, and Twitter. You can tell your friends and family how you're doing, or keep your doctor, coach, or trainer updated on your progress.

Real, Accurate Science.

Breezing measures your metabolism using indirect calorimetry, the Gold Standard method preferred by the World Health Organization.

While traditional indirect calorimeters are large, bulky, and difficult-to-use, Breezing streamlines indirect calorimetry – so it’s simple, mobile, and effective. 

Sensor MagicAll in the sensor.

Our sensor cartridges are pre-calibrated, ensuring optimal performance. For the utmost accuracy, each cartridge is designed for one REEding and can be disposed after use.


Anywhere you go, anywhere you want. Breezing syncs to your smartphone or tablet wirelessly, via Bluetooth. 



1) Insert sensor cartridge. 2) Breathe. 3) That's it.

Where We Are


Breezing is a fully functional, working device. Through extensive testing, we've developed and optimized Breezing's state-of-the-art sensor technology, validating the results against gold standard reference methods.
 We've also refined Breezing's Android app to achieve the best possible user experience, so that anyone, anywhere, can use Breezing and get accurate results. 

What's Next 

Our goal is to make Breezing available for everyone. And to do that, we need your help. We’re looking for funds to bring Breezing into mass production and to further develop the app for all mobile platforms. 

1. At this time, we've established manufacturing and quality control procedures for the Breezing hardware and sensor cartridges with our manufacturer. We need to prove to the manufacturer there is demand, so we can start large-scale production.


Just breathe.

2. Breezing is Android-ready, and the next step for us is the iPhone/iPad. Whether it's Android or iOS, we want to make sure that Breezing works seamlessly on all devices.

                                    B is for Apple       
Over the course of the campaign, we’ve received some great feedback. One question that’s been asked a lot: Why isn’t there an iPhone app for Breezing?
To our iPhone users, we deeply apologize.
We are 100% committed to creating the iOS version for iPhone/iPad – but we need your help to get there.
That’s why we’ve added a new perk: B is for Apple. The funds from B is for Apple are specifically earmarked for Breezing’s iPhone/iPad app development. When you contribute $25, you’ll be directly aiding our efforts to develop the Breezing app for iOS. In addition, you’ll receive the Advance Download of the Breezing Demo App for iPhone/iPad as soon as it’s released.  
We know how important it is to have the Breezing app available on all platforms. Your support will help us reach that goal. 

What We're Offering

Advance Download of the Breezing App for Android (demo mode).
Released to you before anyone else.

B is for Apple. Advance Download of the Breezing App for iPhone/iPad (demo mode). You want an iPhone/iPad app for Breezing. Well, we do, too. Together, we can make this happen.

BPA-free Stainless Steel Limited Edition Water Bottle.
Studies have shown drinking water boosts your metabolism. So, drink up.

Samsung Galaxy Tab 2 with Pre-installed Breezing Demo App.
An Android-powered tablet with the Breezing demo app already installed for you.After thoroughly researching the tablets in the market, we've decided to offer our Breezing demo app with the Samsung Galaxy Tab 2 7.0 (8GB). This tablet is the #1 bestseller on Amazon, has consistently received rave reviews, and is powered by the latest Android 4.1, Jelly Bean. (More details here: http://www.samsung.com/us/mobile/galaxy-tab/GT-P3113TSYXAR-specs)

Full Breezing Device with 10 Sensor Cartridges, and Breezing App for Android.
Be a part of our exclusive first-generation of users.

Full Breezing Device with 10 Sensor Cartridges, plus Android-Powered Tablet with Pre-installed Breezing App.
You can have it all.

All of our early adopters will get complete technical support with their Breezing device. We will also continue to supply Breezing cartridges beyond what's included in the perk (see FAQs for pricing information).

Here's a summary:


Level 1 PerksLevel 2 PerksLevel 3 Perks

 NOTE: The Breezing App released this May is for Android. For non-Android users, we offer the Samsung Galaxy tablet (Tab 2.0 7.0, 8GB) with the app pre-installed.

Your Voice Counts: Referral Contest

Our Indiegogo campaign is more than a fundraising effort - it's the chance for us to hear your thoughts, your comments, your suggestions about Breezing. And on Indiegogo, the world's largest open source crowdfunding platform, we hope to hear from as many voices as possible.

You can support us by joining our efforts to spread the message. Simply share Breezing's Indiegogo campaign with anyone you think would be interested. At the end of the campaign, the person who has given us the most referrals will receive the VIP perk: a one-on-one Breezing REEding and consultation with the Breezing founders, including a Breezing device and lifetime support.

It's the least we can do.

Who We Are: Heart+Brains Behind Breezing

A passionate team of researchers, scientists, and engineers, Breezing is a spin-off company of Arizona State University. 

The Creators:

NJ Tao, Ph.D., President/Co-founder. NJ is a Professor of Electrical Engineering & Chemistry at Arizona State University (ASU), as well as Director of the Center for Bioelectronics and Biosensors at ASU Biodesign Institute. He has over 15 years of experience working with chemical sensors and is a key inventor of Breezing’s core technology.

In his spare time, NJ likes to hike, sketch, and sing karaoke. His favorite movie is Forrest Gump

Erica Forzani, Ph.D., Co-founder/VP of Product Development. Erica is an Assistant Professor of Chemical Engineering, Deputy Director of the Center for Bioelectronics and Biosensors at ASU Biodesign Institute, and the inventor of Breezing's sensing technology. Her current research interests lie in the realm of health applications, and environmental health and safety.

Erica loves bread, pastries, and dulce de leche. She has the special ability to fall asleep anywhere.

Francis Tsow, Ph.D., VP for R&D and Engineering. Francis is an Assistant Professor at ASU's Biodesign Institute and has developed new detection methods to preserve the lifetime of sensors. He has extensive experience in design and building miniaturized thermal and acoustic sensors. 

Francis enjoys Italian opera and has a fondness for chocolate - especially M&Ms.

Xiaojun Xian, Ph.D., VP of Production. Xiaojun has seven years of experience in chemical sensors, and holds 2 patents related to the chemical modification of sensor materials. His expertise serves as the link between Breezing's R&D team and the manufacturing partner for successful production. 

Xiaojun Xian was born in Xi'an. He is the proud father of a bouncing baby boy, who was born in Arizona.

Special Thanks: 

So many people have helped make this campaign possible. A shout-out to all our superstars: Anna Miller and her production crew (Ben and Eric), Adam Mann, Barbara Ainsworth, Chris MacGriff, David Jackemeyer, and Jessica Nichols.

Thank you so much!



How much do the sensor cartridges cost?

Each sensor cartridge is $3-5, depending on the quantity ordered. This price reflects the considerable amount of research and labor that goes into every cartridge. To maintain the highest standards of quality, our sensor cartridges undergo rigorous inspection and testing, and are produced here, in the United States.

How does Breezing compare to current indirect calorimetry tests

Each additional Breezing measurement is $3-5 (cost of sensor cartridge), while current indirect calorimetry tests are upwards of $40, performed at a facility or clinic.

How frequently should I use Breezing?

Metabolism is closely linked to many factors, such as your intrinsic physiology, your age, and your lifestyle (e.g., diet and exercise). Monitoring metabolism has multiple benefits, but how frequently you should measure metabolism depends on your goal.

If you are a healthy individual that just wants to maintain and monitor your health, once a week may be sufficient.

If you want to adopt a new exercise or metabolism-boosting routine, 4-5 measurements throughout the day may be useful to determine the effects of that routine.

If you were diagnosed with a thyroid disorder and need to start treatment, your metabolism will change with your hormone levels and thyroid gland activity. You may want to consult with your doctors about the frequency of REEding measurements.

If you are a body builder, your metabolism increases with increases in muscle mass, and 1-2 measurements per week may help your training.

Can cartridges be re-used?

Each sensor cartridge is designed for one time use only.

Can my mouthpiece be re-used?

You can re-use your mouthpiece after cleaning.

How long does each REEding measurement take?

Each REEding measurement typically takes between 1 - 1.5 minutes.


Tech Specs

Everything you ever wanted to know - and more.

Product Name Breezing™
Principle Indirect calorimetry* (Measurement of oxygen consumption rate and carbon dioxide production rate)
Parameters Resting Metabolic Rate (RMR) or Resting Energy Expenditure (REE)Respiratory Quotient (RQ, Energy source, e.g. carbohydrates, fat, etc.)
Resolution / Unit 10 kCal/day for REE, 0.01 for RQ
Measurement time < 2 min.
Operating environment
Temperature range 59 to 91 oF (10 to 33 oC)
Elevation range 0 to 10,000 feet (0 to 3040 meters)
RH Range < 20 to 88%
Wireless Communication
Wireless Type Bluetooth
Carrier Frequencies 2.40 to 2.48 GHz
Max Power 2.5 mW
Antenna Omnidirectional
Distance Up to 33 feet (10 meters)
Operating Specifications
Power Input 7.4 V - 680 mAh
Battery Type Lithium ion polymer
Operating Time > 50 times
Data Storage External device with Breezing App (phone or tablet)
Size and Weight
Weight 6.0 oz. (170 g)
Dimensions 1.8 in ×2.1 in ×4.8in  (4.7 cm × 5.4 cm × 12.3 cm)
Android Android 2.2 or higher (smartphones example: HTC EVO, Samsung Galaxy SIII, Samsung Note II, etc.)  
Warranty 1 year limited
Included Accessories Mouthpiece (reusable) and sensor cartridges (1 time use)

* Recommended and Preferred Method by American Dietetic Association (H. M. Seagle, G. W. Strain, A. Makris, and R. S. Reeves, "Position of the American Dietetic Association: Weight Management," Journal Of The American Dietetic Association, vol. 109, pp. 330-346, 2009).

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Find This Campaign On
raised by 164 people in 2 months
41% funded
No time left
$100,000 USD goal
Flexible Funding This campaign has ended and will receive all funds raised.
Campaign Closed
This campaign ended on March 27, 2013
Select a Perk
  • $2USD
    Breezing Demo App

    Advance Download of the Breezing App (demo mode). Released to you before anyone else.

    15 out of 100000 claimed
    Estimated delivery: May 2013
  • $25USD
    B for Apple: iPhone App Fund

    ***Updated 2/4: New Perk!*** Specifically earmarked to fund our iPhone/iPad app development. Advance Download of the Breezing App for iPhone/iPad (demo mode). Released to you as soon as it's out.

    17 out of 200000 claimed
  • $50USD
    Limited Edition Water Bottle

    Drinking water can help boost metabolism. This bottle can help you drink water. BPA-free, Stainless Steel, with a one-of-a-kind design you won't find anywhere else. Drink up. Free shipping to USA. (Add $10 for shipping to Canada, $15 for international shipping.)

    7 out of 5000 claimed
    Estimated delivery: May 2013
  • $210USD
    Tablet with Breezing Demo App

    Android-Powered tablet with Pre-installed Breezing App (demo mode). Free shipping to USA. (Add $10 for shipping to Canada, $15 for international shipping.)

    0 out of 1000 claimed
    Estimated delivery: May 2013
  • $250USD

    Full Breezing Device with 10 Sensor Cartridges. Be a part of our exclusive first-generation of users. Choose one of 3 colors: white, gray, red. Free shipping to USA. (Add $10 for shipping to Canada, $15 for international shipping.)

    86 out of 500 claimed
    Estimated delivery: May 2013
  • $400USD
    Breezing Family (for 4)

    Full Breezing Device with 4 mouthpieces and 40 Sensor Cartridges. Be a part of our exclusive first-generation of users. Choose one of 3 colors: white, gray, red. Free shipping to USA. (Add $10 for shipping to Canada, $15 for international shipping.)

    11 out of 150 claimed
    Estimated delivery: May 2013
  • $450USD

    Full Breezing Device with 10 Sensor Cartridges and Android-Powered tablet with Pre-installed Breezing App. Be a part of our exclusive first-generation of users. Choose one of 3 colors: white, gray, red. Free shipping to USA. (Add $10 for shipping to Canada, $15 for international shipping.)

    12 out of 500 claimed
    Estimated delivery: May 2013
  • $600USD
    Breezing Family+Tablet

    Full Breezing Device with 4 mouthpieces, 40 Sensor Cartridges, and Android-Powered tablet with Pre-installed Breezing App. Be a part of our exclusive first-generation of users. Choose one of 3 colors: white, gray, red. Free shipping to USA. (Add $10 for shipping to Canada, $15 for international shipping.)

    4 out of 150 claimed
    Estimated delivery: May 2013
  • $700USD
    Breezing Company (for 10)

    Full Breezing Device with 10 mouthpieces and 100 Sensor Cartridges. Be a part of our exclusive first-generation of users. Choose one of 3 colors: white, gray, red. Free shipping to USA. (Add $10 for shipping to Canada, $15 for international shipping.)

    5 out of 50 claimed
    Estimated delivery: May 2013
  • $900USD
    Breezing Company+Tablet

    Full Breezing Device with 10 mouthpieces, 100 Sensor Cartridges, and Android-Powered tablet with Pre-installed Breezing App. Be a part of our exclusive first-generation of users. Choose one of 3 colors: white, gray, red. Free shipping to USA. (Add $10 for shipping to Canada, $15 for international shipping.)

    3 out of 50 claimed
    Estimated delivery: May 2013
  • $5,000USD
    Breezing VIP

    A golden ticket to the Breezing birthplace. Meet the founders and get a one-on-one Breezing REEding and consultation. Includes a full Breezing device with lifetime support.

    0 out of 5 claimed
    Estimated delivery: May 2013
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