hDrop App0.51.0 - App Store

hDrop is the first wearable sweat sensor designed to extract data from your sweat during exercise.
Independently validated research shows that hDrop is the world’s most accurate wearable sweat sensor, helping athletes understand how much fluid and sodium they lose while training.

Whether you are preparing for a marathon, triathlon, cycling event, or intense training session, hydration strategy matters. Generic hydration advice does not account for the fact that every athlete sweats differently. hDrop helps you personalize your hydration based on real physiological data.

Measure What You Lose in Sweat

hDrop continuously monitors your sweat during exercise and provides insights that help you understand your body's hydration demands.

Track key metrics including:

. Sweat Loss - Estimate how much fluid you lose during training
. Sweat Sodium Loss - Understand electrolyte loss to guide sodium intake
. Sweat Rate Trends - Learn how your hydration needs change with intensity and environment

Build Your Personal Hydration Strategy

Use your sweat data to create a hydration plan tailored to your physiology.

With the hDrop app you can:

. Analyze sweat loss across workouts
. Understand sodium losses during exercise
. Compare sessions in different weather conditions
. Improve hydration planning for races and long training sessions

Designed for Endurance Athletes

hDrop is built for athletes who depend on hydration precision:

. Triathlon
. Marathon and running
. Cycling
. Trail and ultra endurance sports
. Heat training and high-intensity workouts

Scientifically Validated Technology

hDrop technology has been independently validated by university research, demonstrating high accuracy in estimating sweat loss and sodium loss during exercise. The system was developed with a focus on translating laboratory sweat testing into a wearable field solution for athletes.

Unlock Advanced Features with hDrop Lab

The optional hDrop Lab membership provides deeper analysis tools, advanced hydration insights, and personalized hydration guidance based on your sweat profile.

Hydrate smarter. Perform better.

DISCLAIMER: hDrop is not intended to diagnose any health condition. hDrop is not a medical device. Please do not take any critical decisions based on hDrop's current data.

Optional Add-On Terms:
hDrop Lab is available as an optional add-on auto-renewable subscription. Payment will be charged to your Apple ID account at confirmation of purchase. The optional subscription automatically renews unless canceled at least 24 hours before the end of the current period. You can manage and cancel your subscription in your App Store account settings.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://hdroptech.com/privacy-policy

Version History - Added Strava to Connected Apps
- Added custom heart-rate zones
- Improved live workout feedback
- Improved offline support
- Improved workout upload reliability
- Bug fixes 0.51.0 22h ago - Customize your heart-rate zones
- View clearer live workout feedback
- Choose from more Neversecond hydration options
- Improved device scanning and team workout flows
- More reliable workout uploads and recovery
- General stability and performance improvements 0.50.2 Aug 17 - Fixed date picker under hDrop Lab
- Fixed currency display 0.50.1 Jul 6 - Improved Bluetooth connection during uploads
- Added Share activity overlay
- Adding hDrop AI to hDrop Lab (Beta)
- Improved thumb test UI/UX
- Improved Calibration UI/UX
- General bugs fixed 0.50.0 Jul 3 - Opening hDrop Lab gates!
- Automated labeling of activities based on Connected Apps
- Improved HR Zones
- Fixed BLE bugs
- Fixed data loss bug for some users
- Improved Team activities 0.49.6 Jun 9 - Bug fixes for BLE
- Bug fixes UI/UX 0.49.3 May 9 - New battery read implementation.
- Updated manage lab tab.
- Added hDrop Lab Early Access. 0.49.2 Apr 28 - Bug fixes.
- Early access hDrop Lab.
- Adding feature that allows users to modify the weather information at the activity level.
- UI clean up. 0.49.1 Apr 27 - Fixing Team Activity bugs. 0.48.2 Apr 17 UI Calibration Screen Fix
Added notifications (internal app)
Fixed small bugs 0.48.1 Apr 8 BLE Improvements
UI Fixes
Team Activity speed improvements
Bug fixes for weather data 0.48.0 Apr 6 - Improved BLE connections
- Improved Team activities
- Fixed minor UI bugs
- Performance improvements 0.47.4 Mar 23 - TrainingPeaks integration workout sync
- Better Health API syncing 0.46.4 Jan 30 - Improving TrainingPeaks integration
- Improving fitness api integration
- Fixing Calibration bugs
- Connectivity improvements 0.46.3 Jan 28 - Adding Training Peaks integration 0.46.2 Jan 12 - Fixed pre body naked weight bug.
- Fixed HR zones bugs.
- Team users can now start a session with a guest (just with one hDrop). 0.46.0 12/22/2025 - Fixing unit bug (imperial/metric) 0.45.6 11/16/2025 - Health Data Integrations with Apple Health Kit
- Workout editor
- New general UI improvements
- Connectivity improvements with BLE
- Permissions tab to manage all permissions from the App side
- Bug fixes 0.45.5 11/15/2025 - Fixing date picker on DOB register screen. 0.44.6 09/16/2025 - Fixing activities not appearing bug on some devices
- Adding filters for your activities
- Adding new functionality to load all your activities
- Datepicker fix 0.44.5 09/13/2025 - Fixing DOB entry
- Upgraded libraries 0.43.2 08/29/2025 - New UI across entire app
- Improved Bluetooth connectivity
- New metric explanations
- Upgraded SDK 0.43.1 08/22/2025 Calibration bug solved. Calibration factor was not being applied. 0.42.1 07/16/2025 - Added Calibration for complex sweat profiles
- Bug fixes (Notifications)
- Algorithm improvements
- Drink Matching bug fixed 0.42.0 07/08/2025 New onboarding process.
UI/UX Updates.
New support implementation. 0.41.3 03/27/2025