On a GLP-1?
Know what you're losing.
Voltra Core shows your fat, muscle and weight every time you step on. No subscription.
- No subscription. Ever.
- Pay once, own your data
The problem
Your scale says you're winning.It doesn't say what you're losing.
The scale slows down and nobody tells you why
Week one, the weight drops fast. Then it slows, or stops. Your scale shows one number, so you can't tell what's changing underneath it. All you can do is guess.
You feel weaker than the number says
You're down a few kilos and your clothes fit better. But the stairs feel harder and the weights feel heavier. Weight loss isn't always fat loss, and a normal scale can't show you the difference.
One number hides everything
Fat, muscle and water all add up to the same number. When it goes down, you can't see which one moved. Most people never track the one thing that tells them.
Up to 40% of GLP-1 weight loss in trials was lean mass.1
Up to
of that could be lean mass, not just fat.
Illustration only, using the share of weight lost that was lean mass in the trials cited here. Not a prediction or medical advice. Individual results vary.
- Wilding et al., NEJM 2021 (STEP-1) and Jastreboff et al., NEJM 2022 (SURMOUNT-1), body-composition substudies
FatSee your body fat, not just a total weight.-2.4kg
MuscleWatch your muscle week to week, so you can see whether you're keeping it.+0.1kg
WaterSpot water shifts, so a heavy day isn't mistaken for fat gain.-1.1 kg
Visceral FatFollow the fat stored around your organs as your weight changes.-1
Example readings
VOLTRA Core
Most scales tell you how much you weigh. Voltra Core tells you what you're made of. Step on, sync up, and get a full breakdown of your body composition in seconds - no subscription, no monthly fees, just honest data about your body delivered straight to your app.
What can I track?
What does Voltra Core actually measure?
If the number on the scale hasn't budged in weeks, it doesn't mean nothing is happening. Voltra Core looks beyond your weight to show you what's really changing inside your body.
By separating fat mass, muscle mass, and water, Voltra gives you a complete picture of your composition - so you know whether your training and nutrition are working, or whether something needs to adjust.
- See whether weight loss is coming from fat, muscle, or just water that will return the next day.
- Track muscle gains that are invisible on a standard scale, even when your total weight stays flat.
- Identify water retention and bloating that can make progress look slower than it is.
- Monitor visceral fat - the hidden fat stored around your organs that carries the greatest health risk.
Beyond the number on the scale
Total body weight tells you almost nothing useful on its own. It doesn't tell you whether you're losing muscle as you age, how much fat is surrounding your organs, or whether your hydration levels are healthy. Voltra Core's CORESENSE™ sensors measure all of this and more, giving you the kind of data that actually informs decisions about your health.
Watch your body change over time
Connect Voltra Core to your phone and track your transformation week by week, month by month. Rather than reacting to daily fluctuations, Voltra's trend analysis smooths out the noise from water retention and meal timing to reveal your genuine long-term progress.
- View trend graphs showing how your body fat, muscle mass, and visceral fat are changing over weeks and months.
- Look back 3, 6, or 12 months to see changes that are impossible to notice day to day.
- Get daily feedback that connects your lifestyle choices to your body composition, helping you stay consistent when motivation is low.
- Add up to 8 profiles to one Voltra Core, so everyone in your household can track their own individual progress.
Can one Voltra Core be used by multiple people?
Yes - Voltra Core supports multiple user profiles, so the whole household can track their individual health journeys on one device. Each person simply needs their own Voltra account for their measurements to be recorded accurately.
Because Voltra Core connects via Bluetooth, it can only be paired with one phone at a time. To take a reading, just open the Voltra app and step on the scale. If someone else in your household has the app running nearby, they may need to close it first so the connection is free for you.
How to get the most accurate results
For the most consistent results, step on Voltra Core first thing in the morning before eating or drinking. This minimises the natural fluctuations that come from meals, hydration, and daily activity.
Try to weigh in at the same time and in the same spot each day - consistency is everything when it comes to body composition tracking.
And don't stress about day-to-day changes. Weight and body composition naturally shift hour to hour, so what matters is the bigger picture. Voltra's trend analysis is designed to cut through the daily noise and show you what's actually happening in your body over time.
Missed your usual morning slot? No problem - just do it when you can. A late reading is always better than no reading.
Technical Specifications
Four weight sensors
- Equipped with 4 high precision sensors
- Weight range: 5-200 kg (9-400 lbs)
- 50 g (0.1lb) precision
- Units: kg, lb, st lb
Scale
- 45 body composition measured
- High-strength tempered glass platform
- Dimensions: 12.7 x 12.7 x 1.1 in. / 315 x 315 x 25.6 mm
- Advanced Bluetooth connection
Chip
- Medical Grade Measurement Chip
- Dual Frequency Body Fat Scale
- Heart Rate Sensor integrated
Display
- Clear, easy to see graphical display (2.8”)
Power supply
- Rechargeable Li-ion battery
- Average battery life: up to 1 year per charge
- 30-minute fast charge for quick usage.
Shipping and Returns
Free UK shipping. Orders placed before 3:00 pm (Mon–Fri, excluding holidays) are dispatched the same day.
- 30‑day return policy. If it’s not right, contact customerservice@voltrahealth.com to start a return. Devices must be in like‑new or new condition, in it's original packaging, and purchased directly from Voltra
- Refund processing. Once your return is received and approved, refunds are processed in 1-3 business days (funds may take 7–10 business days to appear, depending on your bank).
- Cancellations. We can usually cancel within 30 minutes of ordering if the item hasn’t shipped yet - reach out via support as soon as possible
REVIEWS
Don't take our word for it
FAQs
Does Voltra Core show me my body fat and muscle, not just my weight?
Yes. Step on and the Voltra app shows your weight alongside fat, muscle, water and visceral fat, plus more body composition readings. You can follow how each one changes over time, so you can see what’s behind the number on the scale.
Does it work if I’m taking a GLP-1 medication?
Yes. Voltra Core measures your body composition the same way whatever you’re taking, and it isn’t connected to any medication.
Knowing what the weight is made of can be especially useful when weight is coming off quickly. In clinical trials of GLP-1 medications, a meaningful share of the weight lost was lean mass, not only fat, and a normal scale can’t show you which is which. Voltra Core shows your fat, muscle and water separately, so you can track how your muscle is trending week to week while the number on the scale falls.
Do I need to pay to access any part of the Voltra Health App?
No. You pay once for the scale and every feature in the app is included, with no monthly fees.
What is the benefit of having a handle on the scale?
The handle on Voltra Core isn’t there for carrying or for looks. It has electrodes built in, so when you hold it Core can send and read signals through your arms and upper body as well as your legs.
A scale that only measures through your feet can only read the lower half of you, and it has to estimate the rest. With your hands on the handle the signal travels through your upper body as well, which gives Core more to work from and fewer assumptions to make.
Having direct access to your upper body via the handle means less guesstimates and greater clarity, leading to better-optimized fitness plans.
How long does the battery last?
Up to an entire year per charge, and it’s rechargeable. A 30-minute fast charge gets you going again.
Can more than one person use it?
Yes, up to 8 profiles on one scale, each with their own Voltra account so readings are recorded separately. It connects to one phone at a time over Bluetooth, so close the app on any other phone nearby first.