Sweat Testing
Made Easy
hDrop, the first truly reusable hydration wearable sensor. Sweat testing for athletes made easy, flexible and affordable.
HDROP GEN 2
Sweat Testing
Made Easy
hDrop, the first truly reusable hydration wearable sensor. Sweat testing for athletes made easy, flexible and affordable.
HDROP GEN 2
Partners & Clients:
Nail Your Personalized Hydration Plan
Muscle cramps, heat exhaustion, fatigue… Dehydration can impact your well-being before you even realize it and impair your athletic performance. The hDrop biosensor analyzes the biomarkers on your sweat and transform them into valuable data to take care of your performance.
Actionable
Know when, what and how much to drink
Affordable & Sustainable
Say goodbye to disposable patches
Flexible
Clip it to your heart rate monitor, or use our arm-straps
Independently Scientifically Validated
hDrop is the only reusable sweat sensor that has been independently scientifically evaluated during real exercise in the heat, demonstrating ~92% accuracy for sweat-loss tracking and ~87% accuracy for sweat sodium-loss across running and cycling trials. Since that 2025 study, our team has continued improving the sensor and algorithms, with ongoing validation showing preliminary sodium-concentration accuracy approaching 95%.
Hydration Wearable Sensor Features
hDrop offers a new slick design, purposely crafted to fit your current workflow, being flexible with the tools and clothing you normally wear during your activities.
- Reusable electrode sensor
- Sweat loss tracker
- Sweat rate sensor
- Sodium and Potassium losses
Rechargeable battery
Reusable Electrode Sensor
Clip
- Temperature monitor
- Easy to wear
- Rechargeable battery
- Integrates to your workflow
Wipe it. Clip it. Go!
Get individualized hydration tips based on sports science
The device delivers personal results based on your sweat, workout type, and body physiology. Linked with our hDrop App, it allows you to craft a personalized hydration plan.
Know when your body starts sweating
Track electrolyte changes in your sweat continuously
Discover your hDrop hydration baseline and try to keep it inside your zone
Mentions & Awards
Personalize your hydration preparation and recovery
Fluid loss
This refers to how much liquid your body loses when you exercise. Used to calculate hydration needs.
Sweat rate
This is how much you sweat in an hour. It's useful for figuring out your fluid loss.
Sodium loss
This is the amount of salt that you lose when you sweat. Used to calculate electrolyte needs.
Athletes are using hDrop to stop guessing their hydration.
Real customer feedback highlights why athletes use hDrop for sweat loss, sodium insights, training context, and personalized hydration planning.
Helpful data to have
hDrop gives athletes practical sweat and sodium data they can use to better understand their hydration needs during training.
Love this gadget
A useful hydration tool for athletes who want more than generic recommendations and want to see how their body responds.
Great for race planning
“I am using hDrop to collect hydration information and mix it with all my other wearables. It helps me and my coach plan my races.”
Interesting technology
“Really interesting technology with a lot of potential. I can see how what I drink affects my body and performance.”
Useful with athletes
“It is been awesome being able to track hydration on my players. Some of them struggle with heat, and being able to benchmark them helped us buy the appropriate supplements.”
Hydration gold standard potential
“This device has the potential to become the next hydration gold standard. It can detect when I start sweating, how fluid affects my body, and track my skin temperature during my training.”
Reusable and practical
Customers highlight the value of a reusable sensor that can be used repeatedly without relying on disposable sweat patches.
Better training context
Athletes use hDrop to compare sessions across different temperatures, intensities, and durations so hydration planning becomes more specific.
Useful for sweat profiling
The more sessions athletes record, the easier it becomes to understand their own sweat profile instead of following generic hydration advice.
Real-time sweat data integrations with
Connect your devices with hDrop
More and enhanced integrations coming soon, designed for hDrop Gen 2
hDrop™ Sweat Zones
A new feature that allows you to understand your hydration in an easy and intuitive way during exercise. It is a tool to help you stay aware of your status, complement your hydration strategy, and be more prepared. It does not, in any case, replace the advice of a professional.
Concentrated Zone
This zone indicates that your sweat has less water and more salt. It could mean you might not be drinking enough plain water.
Target Zone
This is the zone where the concentration of salts and the volume of your sweat are balanced, indicating that your sweat levels are within your regular range.
Diluted Zone
This zone shows that your sweat has more water than usual. It suggest you might be drinking too much plain water, diluting the salts in your body and potentially needing more electrolytes.
Operational Modes for our Sweat Sensor
Thumb Test
Place your thumb on the sensor for 80 seconds and receive an immediate range hydration score, offering an estimated snapshot of your current hydration status. (Good, Medium, Low)
Light Activity
Designed for individuals engaged in less strenuous activities like working at a desk, resting, or taking a light walk. Simply place your hDrop on your upper arm, wait to allow sweat capture, and then receive notifications.
Intense Activity
This mode provides real-time feedback on sweat rate, sodium and potassium loss, and other crucial metrics, helping you understand how your fluid intake affects your performance.