VOLTRA │ CORE
4.86 | 651 reviews
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.
No subscription
Drop body fat without damaging your metabolism
Build Real Muscle Faster
Measure body symmetry for better posture
Track metabolic age and optimise your lifestyle
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 5:00 pm (Mon–Fri, excluding holidays) are dispatched the same day.
- 30‑day return policy. If it’s not right, contact customerservice@shopvolt.co 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 5–7 business days (funds may take 7–10 business days to appear, depending on your bank).
- Cancellations. We can usually cancel within 1 hour of ordering if the item hasn’t shipped yet - reach out via support as soon as possible
How it works.
See What's Actually Holding You Back
Step on Voltra Core for a complete body scan in seconds. See the full picture of what's happening inside your body.
- How much fat you actually have
- Where it's stored (including visceral fat)
- How much muscle you're working with
Understand Why You're Not Losing Fat
Your data reveals exactly how your body is responding to your habits.
- If you're losing fat or just water weight
- If your workouts are actually working
- What's slowing your progress
Adjust & Start Seeing Real Results
Use your insights to make smarter, more effective changes.
- Your workouts to burn fat and build muscle
- Your nutrition to support real fat loss
- Data-backed routines tailored to your body
Measure Your Starting Point
Get a precise baseline of your current muscle mass and body fat so you can track every change.
- Current muscle mass by segment
- Body fat percentage
- Hydration and recovery levels
Track What's Actually Growing
See exactly where muscle is being built and where you need to focus.
- Which muscle groups are responding
- Whether you're gaining muscle or just weight
- How recovery is affecting your progress
Optimise & Keep Building
Use your data to train smarter and see continuous progress month after month.
- Adjust training volume and intensity
- Time nutrition around your measurements
- Set targets based on real body composition data
Understand Your Whole Body
Go beyond weight and get a complete picture of your overall health and balance.
- Left vs Right Balance
- Metabolic age
- Visceral fat levels
Spot Imbalances Early
Identify what's out of balance before it becomes a problem.
- Hydration levels affecting energy
- Muscle imbalances between left and right
- Fat distribution changes over time
Build Sustainable Healthy Habits
Use your trends to make long-term changes that actually stick.
- Daily habits that support your body composition
- Long-term trends showing real transformation
- Health markers improving month on month
Advanced Core Insights
Measure Visceral Fat
The most dangerous fat isn't the kind you can see in the mirror - it's the kind hiding around your organs. Voltra Core measures your visceral fat levels directly, so you know whether your health is genuinely improving, not just your waistline.
Gain Muscle and lose Body Fat
Losing weight isn't the same as losing fat. When you drop muscle instead, your metabolism slows and fat becomes harder to shift. Voltra Core shows you exactly what you're losing - so every step forward means more fat gone, muscle protected, and a body that's stronger and healthier than before.
Hydration and Body Water
A traditional weighing scale can lie. A drop in weight might look like progress, but it could just be water - gone today, back tomorrow. Voltra Core tells you what's really changing, so you know whether you're genuinely losing fat and protecting muscle, or just fluctuating.
Measure Bone Mass Estimate
Strong bones are the foundation of a long, active life - and most people don't think about them until something goes wrong. As bone mass decreases, the risk of injury, fractures, and limited movement increases. Voltra Core tracks your bone mass estimate over time, helping you stay ahead of age-related decline and protect your strength, mobility, and independence for the long term.
Track Metabolic Age
Two people can both be 40 on paper - but one feels and performs like they're 30, the other like they're 55. Metabolic age tells you where you actually stand, not just what your birth certificate says. Voltra Core tracks it so you can see the real impact of your lifestyle choices and take control of how your body ages.
How does Voltra Core compare?
 Voltra Core
|  Other smart scales
|  Medical grade
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Accuracy
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98%
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89%
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98%
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Price
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£99
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£100-200
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£15,000+
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No Subscription
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Personalised Insights
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✕
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✕
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Coaching & Feedback
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✕
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✕
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Weekly Health Reports
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Voltra Core FAQs
Is the app actually free?
Really. No monthly fee, no annual renewal, no premium tier you need to unlock to see your own data.
You pay once for Voltra products once and every single feature is yours forever from day one. No small print. No surprises.
How accurate is the data?
Voltra Core uses the same measurement principles found in professional clinical equipment, going well beyond what a standard bathroom scale can tell you.
At its core is our CORESENSE™ multi-frequency sensor system, which sends multiple signal frequencies through your body simultaneously. This allows it to distinguish between fat tissue, muscle, and water with a level of precision that single-frequency scales simply cannot match.
Most smart scales only measure through your feet, giving you a rough estimate based on your lower body alone. Voltra Core measures differently - sensors in both the platform and the handheld electrodes scan your entire body, including your torso, arms, and legs separately, giving you a complete segmental breakdown rather than a whole-body guess.
The result is body composition data that holds up against professional testing. In independent validation testing, readings from devices using the same technology have been shown to come within +/- 2% of DEXA scan accuracy - the gold standard in body composition measurement, typically only available in medical and research settings.
- Multi-frequency scanning reads through multiple tissue layers at once for precise separation of fat, muscle, and water
- Full-body segmental measurement covers your upper and lower body, not just your legs
- Dual contact point technology measures through both the foot platform and hand electrodes for whole-body accuracy
- Independently validated results that match DEXA scan accuracy to within 2%
What can I track?
If you've been training or eating well but the number on the scale isn't changing, it doesn't mean your efforts aren't working. Voltra Core looks past your total weight to show you exactly what's shifting inside your body - and why.
By breaking your results down into fat mass, muscle mass, and body water, Voltra gives you a clear read on whether your approach is actually working, or whether it's time to make a change.
- Find out whether the weight you're losing is coming from fat, or just water that'll return by tomorrow
- See muscle changes that a regular scale would never pick up, even when your total weight hasn't moved
- Spot water retention and bloating that can make real progress invisible on the scales
- Track visceral fat - the fat stored deep around your organs that poses the greatest risk to your long-term health
More than just a number
Your bodyweight alone tells you almost nothing meaningful. It doesn't reveal the muscle you may be losing as you get older, the visceral fat building up around your organs, or whether your body is properly hydrated. Voltra Core's CORESENSE™ sensors measure all of this, from hydration levels to indicators of bone health, so you have the full picture rather than just a single figure.
Track real change over time
Sync Voltra Core with your phone and follow your body's transformation week by week, month by month. Rather than obsessing over daily fluctuations driven by water retention or meal timing, Voltra's trend analysis shows you the changes that actually matter over the long run.
- View graphs tracking your body fat, muscle mass, and visceral fat trends over weeks and months
- Look back 3, 6, or 12 months to see the kind of transformation that's impossible to notice day to day
- Get daily insights that show how your habits and choices are affecting your body composition, so you stay consistent even when motivation dips
- Add up to 8 user profiles to a single Voltra Core, so everyone in your household can track their own progress independently
What is the maximum weight capacity?
Voltra Core can measure and track up to 400 pounds (181 kilograms)
Who is Voltra Core for?
Voltra is designed to work for everyone. Whether you're a fitness enthusiast chasing your best self, someone looking to get a better handle on their health, or you simply want to understand your body better - Voltra Core was built for you.
No experience needed, just a desire to know more about yourself.
What does my warranty cover?
5-Year Warranty
With our 5-year warranty plan, you get the same comprehensive protection as our 1-year plan but extended over 5 times as long. If any issues arise with your device during this time, just reach out for a free replacement.
1-Year Warranty
Our standard 1-year warranty is like having a reliable safety net for your device. No matter what unexpected mishaps may occur – whether it's a clumsy drop or a curious pet – we've got your back. Just reach out to us, and we'll swiftly arrange a free replacement, ensuring you can get back to enjoying your device hassle-free.
What if I change my mind?
You have 30 days to change your mind. If Voltra core doesn't exceed your expectations, send it back and we will refund you, no questions asked.