# hDrop App — Sweat Testing Made Easy

> Wearable sweat sensor for personalized athlete hydration and sodium loss tracking. (iPhone/iPad app by hDrop Technologies Inc..)

- Source: https://appshunter.io/ios/app/hdrop-app/id1525159399 (this page in markdown: same URL + `.md`)
- Developer: [hDrop Technologies Inc.](https://appshunter.io/developer/1525159401)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Rating: 3.70/5 from 11 App Store ratings · 15 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 59 MB
- Languages: American English
- Released: 2021-08-09
- Data updated: 2026-08-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/hdrop-app/id1525159399/reviews.md

## What is hDrop App?

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

## Key features

- Wearable sweat sensor
- Fluid and sodium loss tracking
- Personalized hydration strategy
- Sweat rate trend analysis
- Workout data analysis
- Comparison across conditions

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| hDrop Lab | $12.99 | per month |
| hDrop Lab | $89.99 | per year |


## Recent user reviews (10 of 15)

All indexed reviews: https://appshunter.io/ios/app/hdrop-app/id1525159399/reviews.md

### 2/5 — Lousy UX

*2026-08-21*

One would think that an app in 2026 would be better than those from 10 years ago. Intrusive onboarding experience. Doesn't natively work with Apple-generated passwords and with unnecessary irritating rules. Doesn't obey iOS text rules. Updates the device at exactly the wrong moment. Poor results delivery. You guys can do better... hard to believe the device is worth much considering the lack of care in the app.

### 1/5 — Great data, poor execution

*2026-08-13*

The device and app really has potential.  The data it provides is very accurate and useful. The shortfall is after an activity, getting the data to upload from the device to the app. It typically takes 3 or more tries and almost never loads the first time.  Hold on to your money until they get the bugs worked out.

### 2/5 — Great info…when it works

*2026-05-27*

I’ve used the HDrop for the past three weeks. The information and guidance it provides has made a difference in how I feel during and after my training sessions (trail running, cycling, and strength training). What I find frustrating is that for me, the device/data fails in its upload about 20% of the time. This happens when I’ve attempted to upload via WiFi or cellular . Before I hit the end activity I always confirm I have an internet access. Nevertheless, I get the “Activity upload failed” with the option to try again.

**Developer response:** Thank you for your feedback, and we are glad to hear that hDrop has been helping with your training.

We also appreciate you highlighting the upload issue. Our team has deployed a fix for this, so the “Activity upload failed” issue should now be resolved. Please make sure you are using the latest version of the app, and let us know if you experience any further upload problems.

Thank you again for your support and for helping us improve hDrop.

### 1/5 — I need this to track my hydration and salt loss but it doesn’t work.

*2026-04-25*

You’ll pay a lot of money for something you can’t use. That’s because the app is buggy and rarely works properly. I have a 40 mile bike ride today and I needed this device to ensure I’m hydrated but more importantly, to know how much salt to replace after my ride, and I lose more salt than most people. But I’ve tried to open the app several times and it does not work. I’ve even tried removing it and reinstalling it and it still doesn’t work. I am going to get my money back hopefully if not, I’ll go to consumer affairs and the BBB!

**Developer response:** Hi,

We’re really sorry to hear this, especially before a long ride when you were relying on the device for hydration and sodium guidance. That is not the experience we want you to have.

Please contact us at info@hdroptech.com and we’ll help troubleshoot the app issue right away. If we can’t get it working properly for you, we’ll also help with the next steps.

In the meantime, please make sure you have the latest version of the hDrop app installed, since recent updates include important stability and connectivity improvements.

Thanks for flagging this. We’ll be happy to help.

### 5/5 — Fantastic information!

*2025-01-07*

I use this while I’m cycling and it has made a huge difference in how I hydrate on and off the bike.

### 1/5 — Don’t buy

*2024-09-23*

Don’t buy the device till they make a working app. The device was great for most of the summer but since the last update it is a never ending loop of the Apple making me do the setup again. I can only get past it about 1 out of every 10 tries. I messaged the team behind the device and have gotten no response.

### 5/5 — Love my hdrop

*2024-08-31*

This product was a game changer for me - I had no idea I required 4x the electrolytes I was taking. Makes a huge difference in my long runs. I won’t leave home on any runs without it now.

### 1/5 — Nice idea poor execution

*2024-08-01*

hDrop has advertised Garmin support for years but they have NEVER got this to work. Without Garmin support the app and device are basically useless.

**Developer response:** Hi,

Thanks for sharing this feedback. Garmin support is available, and we have setup videos and instructions here:

hdroptech.com/how-to-garmin

Please make sure your hDrop app and Garmin data field are both updated to the latest versions, then follow the steps in the guide. If you still have trouble getting it connected, contact us at info@hdroptech.com and we’ll be happy to help troubleshoot it.

### 2/5 — Doesn’t work with Internet connection

*2024-07-20*

The app simply won’t let you start an activity if there’s no Internet connection. This means I can’t use it for probably half my activities since many times I’ll be riding trails where there’s no service at the trailhead. The app is good otherwise, but if I can’t use it it’s useless, so low rating until they can fix that. I see no reason it should require a network connection. If there is something, inform the user that so it can be accounted for, but the actual sensor/device shouldn’t need it.

### 4/5 — Need Apple Watch App

*2024-06-17*

I really like the device itself, but hate that I have to bring my phone with me on runs for real-time monitoring.  An Apple Watch App would be appreciated for this purpose.

## Frequently asked questions about hDrop App

### What is hDrop?

hDrop is a wearable sweat sensor designed to measure fluid and sodium loss during exercise. It helps athletes understand their unique hydration needs and build personalized hydration strategies.

### How accurate is hDrop?

Independently validated research shows hDrop to be the world's most accurate wearable sweat sensor. It provides reliable estimates of sweat loss and sodium loss during training.

### What metrics does hDrop track?

hDrop tracks key metrics including estimated sweat loss, sweat sodium loss, and sweat rate trends. This data helps users understand their body's hydration demands.

### Who is hDrop designed for?

hDrop is built for endurance athletes, including those participating in triathlons, marathons, cycling, and other high-intensity or ultra-endurance sports where hydration precision is critical.

### Is hDrop a medical device?

No, hDrop is not a medical device and is not intended to diagnose any health condition. Users should not make critical health decisions based solely on hDrop's data.

### What devices does hDrop support?

The hDrop app is supported on iPhone and iPod devices. It is designed to work with the wearable hDrop sensor.

### How often is hDrop updated?

The latest version of hDrop is 0.47.4, last updated on March 23, 2026. Updates typically focus on improving accuracy, adding new features, and enhancing user experience.

### Does hDrop have ads?

No, the hDrop app does not contain advertisements. It offers a clean and focused experience for athletes tracking their hydration.

## Version history (last 5 releases)

### 0.50.2 — 2026-08-17

- 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

### 0.50.1 — 2026-07-06

- Fixed date picker under hDrop Lab
- Fixed currency display

### 0.50.0 — 2026-07-03

- 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

### 0.49.6 — 2026-06-09

- 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

### 0.49.3 — 2026-05-09

- Bug fixes for BLE
- Bug fixes UI/UX

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## Related topics

[hdrop app](https://appshunter.io/ios/topics/hdrop-app) · [gatorade sweat patch](https://appshunter.io/ios/topics/gatorade-sweat-patch) · [hydration app log](https://appshunter.io/ios/topics/hydration-app-log) · [sweatsmart electrolytes](https://appshunter.io/ios/topics/sweatsmart-electrolytes)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*