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RENPHO Scale Review: Does It Work?

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The RENPHO scale is Amazon’s top pick for scales, and it has nearly 100,000 reviews on Amazon. Of those reviews, the large majority are positive. It grabbed our interest, especially because compared to some other body fat scales, it’s relatively inexpensive. So what should you know about the RENPHO scale?

renpho scale, renpho scale review, renpho scale accuracy, renpho scale app
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Key Takeaways

  • RENPHO scale is a smart scale that has an app that also integrates with fitness apps
  • Works with Samsung Health, Apple Health, and Fitbit
  • Provides 13 measurements including weight, BMI, body fat, muscle mass, and bone mass
  • The data automatically syncs to the app when it’s connected
  • Newest model is USB rechargeable
  • Includes high-precision sensors

What is the RENPHO Scale?

The RENPHO scale is one of the top-rated scales on Amazon.

It’s a smart scale that integrates with popular fitness apps. It’s easy to use and set up and can give you a wide overview of your health, wellness, and help you track your fitness goals.

The scale measures 13 metrics when you step on.[1] You can get readings for all of them in just a few seconds.

The design of the scale features four sensors, and you can enable Bluetooth on your smartphone to track all of your scale measurements.

As a smart scale, the RENPHO works with sensors that use what is called bioelectrical impedance. What this means is that a minor electrical current goes up through your leg and then across your pelvis. It can measure the amount of resistance that current receives from your body fat.

The other sensors can measure the resistance the current met as it goes back through the other leg.

The more resistance the current meets, the higher the percentage of fat. The scientific reason for this is because fat has less water than muscle. Therefore, fat is denser than muscle, making it more challenging for the current to travel through.

Bioelectrical Impedance Analysis

Specifically, this scale uses something called bioelectrical impedance analysis (BIA) to provide readings of the metrics measured by the scale.[2] The human body is made up of different tissues. Each has different levels of electrical conductivity.

The current of a scale using BIA will go through most tissues, including muscles and water.

A scale like RENPHO measures the voltage drop between the source and the received electrodes. Then, the resistance level of tissues is measured based on the passage of the current.

If you have an electronic medical implant, including a pacemaker, you should not use a scale that’s a body composition model. If you’re pregnant, you should use the weight function exclusively and none of the other functions.

Is a Body Fat Scale Accurate?

For the most part, while they are estimates, body fat scales like the RENPHO are considered pretty accurate.

Some variables can affect accuracy, such as your age, where you store fat and your gender. For example, women tend to store more fat than men.

You can’t use a body fat scale as your only indicator of health or wellness, but it is helpful to have at home between doctors’ visits. Research studies have found that body fat scales are pretty accurate overall, however.[3]

What Are the Pros and Cons of a Body Fat Scale?

A body fat scale has some pros but also some cons to be aware of.

The big benefit of a body fat scale like the RENPHO is the fact that it’s convenient. Even if the measurements you get from a body fat scale are inaccurate, you can still track your progress consistently. You can get a good feel for how effective your current diet or exercise strategy is if you’re consistently relying on the measurements of the same body fat scale.

However, the big downside of a body fat scale is that it doesn’t show you where the fat is stored on your body. Where fat is stored is a big part of how likely you are to develop certain diseases. For example, there are links between high levels of abdominal fat and the risk of developing cardiovascular disease.

What Does the Scale Measure?

The RENPHO scale measures:

  • Bodyweight: Maintaining a healthy weight reduces your risk of chronic illnesses like high blood pressure, stroke, diabetes, heart disease, and cancer. Maintaining a healthy body weight can also help you feel good about yourself and pave the way for a fulfilling, active life.
  • Muscle mass: This is a measure of the weight of the muscles in your body. Muscle mass includes smooth muscles, skeletal muscles, and the water contained in muscles. You can burn more body fat if you have higher levels of muscle mass.
  • Body fat percentage: Your percentage of body fat can help you figure out what your weight fluctuations mean. For example, if you’re gaining weight but losing body fat, it can mean that your workouts are paying off. Looking at body fat percentage gives you a much better view of what’s really going on with your body, your diet and your fitness.
  • Skeletal muscle: There are three types of muscle tissue. There’s smooth and cardiac muscle, and then skeletal muscle. Skeletal muscle is attached to the bone. It’s a combination of nerves, bones, muscle tissue, and blood vessels. With healthy levels of skeletal muscle, you can be more effective in your exercise and movements. Healthy skeletal muscle levels can also help prevent fat storage.
  • Water percentage: The RENPHO scale can measure body water. Your body needs enough water to function properly. The human body should be made up of at least 50% water. The ideal percentage for women can range from 45 to 605. For men, it can be between 50 and 65% of the total body. If you’re athletic, you should aim to have at least 5% more total body water than the average range.
  • Fat-free body weight: This metric is also called lean body mass. It is a measure of your body’s components except fat, and it includes muscle, organs, water, and bone.
  • BMI: Body mass index or BMI is a measure of body fat based on height and weight.
  • Bone mass: The RENPHO models can help you learn more about the health of your bones. The scale conducts electricity at different rates in bone, so it can estimate your bone mass.
  • Protein: The RENPHO can measure protein mass, which is the amount of protein in your body. There are links between muscle mass and protein mass. A lack of protein is associated with increased body fat.
  • Basal metabolism: Your basal metabolic rate measures the number of calories your body needs to function. It’s based on how many calories you would need if you were resting for 24 hours. If you have a high basal metabolic rate, you burn more calories than someone with a low rate. Around 70% of the calories you take in each day are used for basal metabolism. The higher the muscle mass, the higher your BMR also tends to be, and then the higher the number of calories you’re likely to burn.
  • Body age: This will measure your basal metabolic age to the average of your age group. If your metabolic age is higher than your chronological age, it might indicate you should work on improving your metabolic rate. You can improve your metabolic rate through exercising, which builds healthy muscle tissue.
  • Visceral fat: This is a measure of the fat protecting your vital organs. You need to have a healthy level of visceral fat to reduce your risk of high blood pressure and heart disease. You can also look at the measure to determine your risk of developing diabetes. Even if your overall weight remains the same, as you age, you might have more visceral fat, which can be a serious health concern.
  • Subcutaneous fat: This is the fat stored beneath your skin. When you pinch your skin, for example, you’re pinching your subcutaneous fat. This is in contrast to your visceral fat, stored inside your muscle wall and around your organs. Subcutaneous fat is what we think of from a vanity standpoint.

Understanding the difference between body fat and BMI is a big part of getting the most from the RENPHO scale or any body fat scale.

Body mass index or BMI is a measured ratio of your height and weight. According to the CDC, BMI can be a good tool to help determine if someone is overweight or underweight. It doesn’t measure body fat directly, though. Nor does measuring BMI give any indications about your muscle mass. Muscle is denser than fat, so you may have a higher bodyweight that’s actually the result of exercise.

RENPHO Scale App

The RENPHO scale is Bluetooth enabled. You can weigh anytime you want and get your metrics without turning on the app. Your data will automatically sync to the app whenever it’s turned on again.

With the app, you can track your progress using visuals like graphs and charts.

The app also supports Google Fit, the Fitbit App, and Apple Health, so you can transfer all of your data from the scale to those apps within just one second.

Your entire family can use the scale and app as well. You can create multiple profiles so that all of your data is separated.

For your data to sync, you should enable Bluetooth on your phone, and if you have Android 6.0+, you need to turn on location.

Rechargeable

One of the big benefits of the RENPHO is that its battery is rechargeable. The battery is long-lasting and built-in and takes anywhere from three to four hours to charge fully. Then, that battery charge should provide you with two to three months of use.

You can charge your scale with any USB source. You can use, for example, the included USB cable.

What Do RENPHO Scale Reviews Say?

This scale is one of the top-rated body analysis scales on Amazon. It’s also very inexpensive. There are thousands of ratings for this scale and its different variations. Highlights of the reviews include:

  • Users say the app is easy to use, and it takes just a few minutes to set up a profile
  • Reviews say that it’s great that multiple people can use the scale and track their results without them affecting one another
  • The scale can track weight loss, so you don’t have to do the math on your own
  • Users describe the app as intuitive with a lot of features
  • Many reviews say this scale is equal in quality to much more expensive body fat scales
  • Some reviewers came back after having the scale for a year or more to report it’s still working great
  • A lot of people leaving reviews say they like that the app can integrate with things like FitBit
  • Being able to charge the batteries is a big plus for many customers who use the RENPHO

There are very few negative reviews for this scale. Only 3% are two-star or one-star. For the most part, these reviews seem to be related to a faulty scale that someone rarely receives, which is then replaced by the company.

Frequently Asked Questions

The following are brief answers to some of the most common questions about this scale.

How Accurate is RENPHO Scale?

According to reviews, this scale is accurate. You can also use it consistently to track your progress.

How Does the RENPHO Scale Work?

This scale works by sending electrical signals through your body. You step onto the scale and there are sensors under your feet using something called bioelectrical impedance. The electrical current runs up your leg and across your pelvis. It measures the resistance from body fat.

What Apps Does RENPHO Connect With?

The RENPHO connects with FitBit, Google Fit, Apple Health, and Samsung Health. There’s also an available Apple Watch App.

[1] https://www.withings.com/us/en/health-insights/about-bioelectrical-impedance-analysis

[2] https://www.sciencedirect.com/topics/medicine-and-dentistry/bioelectrical-impedance-analysis

[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4118362/

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