hDrop App vs Card Work

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

Card Work turns a standard 52-card deck into a complete workout — no gym, no equipment, no excuses. HOW IT WORKS Each suit maps to an exercise of your choosing. Each card tells you how many reps — or seconds — to complete. Draw a card, do the work, flip to the next. Finish the deck, log the time. RED DECK / BLUE DECK Configure an Upper Body deck and a Lower Body deck independently. Each has its own exercises, time multiplier, and Joker challenges. Switch between them in Settings or let the app pick automatically based on your weekly plan. TIMED EXERCISES Mark any suit as timed and the card value becomes seconds. A 7 of Hearts = 7 seconds — multiplied by your Time Multiplier. Crank the multiplier up to increase intensity, dial it back on recovery days. WILD CARDS Drawing a Joker triggers a special challenge. Set your own Joker exercises in Settings. They don't follow the normal rules — make them count. WEEKLY PLAN Assign Upper Body, Lower Body, or Rest to each day of the week. Card Work auto-selects the right deck when you open it on a workout day. You can always override it for a one-off session. WORKOUT HISTORY Every completed session is logged with your time and card count. Your best full-deck time is tracked and displayed so you always know what you're chasing. Built for people who want a real workout with zero setup. Inspired by Army physical training.