The Smartest Way to Measure and Improve Body Composition

Spren turns your phone into a validated health lab: Accurately measure body composition and HRV, get personalized nutrition and 24/7 AI coaching.

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Join the waitlist today to be among the first users to try Body by Spren.

The first 2,000 waitlist sign-ups will receive access to Body by Spren Plus FREE for 60 days.
All the accuracy. None of the costs.

Spren uses your phone camera to accurately measure your physiology using validated algorithms — no extra hardware needed.

Optimizing Body Fat

Remove the guesswork and hassle from tracking your body fat percentage and instead measure it with a quick selfie you can take all by yourself.

Gaining Lean Mass

Small changes in lean mass are difficult to see with the human eye—detect these changes effortlessly and track progress over time.

Improve Cardio-Metabolic Health

Most at-home scales lack the ability to measure fat distribution. Spren does this with every scan, providing insights into your cardiac and metabolic health.

Slow Down Your Biological Age

Using evidence-based machine learning algorithms, Spren measures small changes in body composition—empowering your quest to slow aging.

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What Our Community
Is Saying
“Much easier and cheaper to do frequently to track body recomposition progress than DEXA”
Johnathan
“Almost identical to my DEXA from last week. I’m impressed.”
Sesto
“I love feeling like I’m getting an adequate picture of where I’m at, not just random numbers based on what my weight and height are.”
Karim
“I now have a DEXA scanner
in my pocket.”
Mallori
“Results were very close to
my recent DEXA scan.”
Ava
Trusted by 122 Universities and Research Labs
How It Works
Leave the complicated and time consuming laboratory scans behind.
Get started with Spren in just three easy steps.
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Snap a Selfie

Spren is a safe, convienent and reliable body composition scan using a patented imaging technology—simply snap a full body selfie on your smartphone and let Spren go to work.

Analyze Your Results

Spren delivers laboratory accuracy in the comfort and safety of your own home. Get immediate data on your body fat composition, lean mass, cardio-metabolic health, and more.

Track Your Progress

Spren helps you avoid the confusion and frustration of false plateaus. Measure your body composition at regular intervals to reveal your true progress losing fat and getting fit.

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Get Body by Spren Plus FREE for 60 Days

Be among the first 2,000 sign-ups to join the waitlist to unlock Spren’s premium features with Body by Spren Plus.

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Personalized Nutrition Targets

Fuel your body based on what makes you you.
Spren creates custom nutrition targets based on your body composition, age, ethnicity, activity level, recovery, health conditions , and more. It's not one-size-fits-all — it's tailored to your lifestyle and goals.

Our Science
Explore some of the published research behind Spren.
June 1, 2022
June 1, 2022
Agreement Between A 2-Dimensional Digital Image-Based 3- Compartment Body Composition Model and Dual Energy X-Ray Absorptiometry for The Estimation of Relative Adiposity
Katherine Sullivan, Casey J Metoyer, Bjoern Hornikel, Clifton J Holmes, Brett S Nickerson, Michael R Esco, Michael V Fedewa
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May 1, 2021
May 1, 2021
Accuracy of a Mobile 2D Imaging System for Body Volume and Subsequent Composition Estimates in a Three-Compartment Model
Michael V Fedewa, Katherine Sullivan, Bjoern Hornikel, Clifton J Holmes, Casey J Metoyer, Michael R Esco
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March 26, 2021
March 26, 2021
Validity of a 3-compartment body composition model using body volume derived from a novel 2-dimensional image analysis program
Katherine Sullivan, Bjoern Hornikel, Clifton J. Holmes, Michael R. Esco & Michael V. Fedewa
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March 21, 2021
March 21, 2021
Utilizing a Novel 2D Image Processing System for Relating Body Composition Metrics to Performance in Collegiate Female Rowers
Michael R Esco, Clifton J Holmes, Katherine Sullivan, Bjoern Hornikel, Michael V Fedewa
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Keep Track of Your Body’s Most Important Biomarkers for Fat Loss

Spren empowers you with the data that truly drive positive changes in fitness and performance.

Biomarker/Insight
Description
Body Fat (%)

Fat mass / total mass; the proportion of your body that is made up of fat.

Fat Mass

Total weight of your fat mass (lbs/kgs)

Lean Mass

Total weight of your body from non-fat sources like muscle, organs, water, connective tissue, etc. (lbs/kgs)

Android Fat

Body fat around the trunk and upper body; an increase in android fat is associated with an impaired glucose tolerance and insulin resistance (higher risk of type 2 diabetes) (lbs/kgs)

Gynoid Fat

Body fat that forms around the hips, breasts, and thighs; often referred to as “reproductive fat”. The ratio of this to android fat is also related to risk of type 2 diabetes and cardiovascular disease (lbs/kgs)

Resting Metabolic Rate

Minimum daily calorie requirements needed to sustain your basic life-sustaining functions.

Your AI Coach, Always On

Get support when you need it most — anytime, anywhere. Spren’s AI coaching delivers real-time guidance and accountability, helping you stay consistent and push past plateaus. Whether you're trying to lose fat, build muscle, or just feel better, your coach is there 24/7 to keep you on track.

Ready to Crush Your Body Composition Goals?

Download the App today to access reliable body composition analysis through your smartphone.

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