# HYDROX - Training Hydration — Know your number

> Personalized hydration target calculator for athletes based on body weight and training. (iPhone/iPad app by BALL VENTURES LLC.)

- Source: https://appshunter.io/ios/app/hydrox-training-hydration/id6758163738 (this page in markdown: same URL + `.md`)
- Developer: [BALL VENTURES LLC](https://appshunter.io/developer/1871278776)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Rating: 5.00/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 8 MB
- Languages: American English
- Released: 2026-02-03
- Data updated: 2026-07-23
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/hydrox-training-hydration/id6758163738/reviews.md

## What is HYDROX?

Your hydration target, calculated. Not guessed. HYDROX uses your body weight and training intensity to set a daily target based on the same protocols used in elite athletic programs (combining guidance from the American College of Sports Medicine and published research from leading sports science researchers)

Built for athletes who train: Barry's, HYROX, runners, cyclists, surfers, skiers, sports enthusiasts and everyday athletes. Not step-counter civilians

SET YOUR BASELINE
Your target comes from your body weight using the American College of Sports Medicine (ACSM) protocol, not a generic "8 glasses a day" number

TRAINING MODE
Select Easy, Moderate, or Hard and your daily goal adjusts using the Galpin equation based on body weight and workout intensity

ONE-TAP LOGGING
Tap the gauge to log, long-press for custom amounts, or log from your widget or lock screen without opening the app

SMART REMINDERS
Hourly pacing that adjusts to your progress, backs off when you're ahead, and nudges when you're behind

HYDROX PRO
• Apple Watch app with gauge and complications on any watch face
• Log from your wrist in a single tap
• Adaptive Hydration that reads workout data from HealthKit and adjusts your daily target automatically
• Auto-intensity based on heart rate, so a hard session pushes your target up and a rest day keeps it at baseline

THE SCIENCE
Baseline from ACSM guidelines. Training intensity from the Galpin equation. Race Packs cite 16+ studies on sodium loading, HRV monitoring, and post-exercise rehydration. WHOOP research links hydration to higher HRV. And coffee counts as hydration (Killer et al 2014).

EVERYTHING ELSE
• HealthKit sync
• Lock screen and home screen widgets
• Quick actions from home screen
• No account, no ads, data stays on your device

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://hydrox.app/privacy.html

## Key features

- Personalized hydration targets
- Training intensity adjustment
- One-tap logging
- Smart reminders
- HealthKit sync
- Apple Watch app
- Widgets for home and lock screen

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| HYDROX Pro | $24.99 | per year |
| HYDROX Pro | $0.99 | per 7 days |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| HYROX Americas DC Race Pack | $14.99 | one-time |
| HYROX Miami Race Pack | $14.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/hydrox-training-hydration/id6758163738/reviews.md

### 5/5 — Easy and fun to use

*2026-02-19*

Very straightforward interface which I appreciate, and the tap to add feature makes it not a hassle to use consistently

## Frequently asked questions about HYDROX

### How does HYDROX calculate my hydration target?

HYDROX uses your body weight and training intensity (Easy, Moderate, or Hard) to calculate a personalized daily target. It applies protocols from the American College of Sports Medicine and the Galpin equation, ensuring accuracy beyond generic advice.

### Does HYDROX have ads?

No, HYDROX is ad-free. The app emphasizes a clean user experience with no advertisements, and your data stays on your device.

### What are the features of HYDROX Pro?

HYDROX Pro includes an Apple Watch app for logging and complications, adaptive hydration that reads workout data from HealthKit, and auto-intensity adjustments based on heart rate for a more dynamic target.

### Can I log my water intake without opening the app?

Yes, you can log water intake with a single tap from the app's gauge, long-press for custom amounts, or use widgets on your lock screen and home screen without needing to open the application.

### What is the pricing for HYDROX Pro?

HYDROX Pro offers two subscription plans: $0.99 per week or $40.00 per year, both including a 7-day free trial. This allows you to experience the advanced features before committing.

### How often is HYDROX updated?

The latest version of HYDROX is 1.1.3, which was last updated on March 14, 2026. Updates typically focus on improving features, performance, and scientific accuracy.

### Is HYDROX suitable for casual users?

HYDROX is specifically built for athletes and serious sports enthusiasts, including those training for events like Barry's or HYROX, runners, cyclists, and surfers. It is not intended for casual users or 'step-counter civilians'.

### Does HYDROX integrate with other health apps?

Yes, HYDROX syncs with HealthKit, allowing it to read workout data from your Apple Watch and other connected devices. This integration helps in automatically adjusting your daily hydration target based on your activity.

## Version history (last 5 releases)

### 1.1.3 — 2026-03-14

Race Packs are here: 8-day hydration protocols for those who race
Miami update: HYROX Miami Beach 8-day hydration protocol with sodium loading, race day timeline, and Recovery Index. Built on peer-reviewed sports science

### 1.1.2 — 2026-03-13

- Race Packs: event-specific hydration protocols with day-by-day targets, sodium loading guidance, race day timeline, and Recovery Index powered by HRV, heart rate, and sleep data from Apple Health
- Improved Training Mode Selector 
- Heart Rate Based Adaptive Classification updates
- Added Insight Cards to provide workout feedback, recap, goal complete messages and other surprises
- Watch UI improvements 
- Main gauge UI improvements

### 1.1.1 — 2026-02-19

HYDROX PRO with Apple Watch app and complications for logging from your wrist, and Adaptive Hydration that auto-adjusts your daily target from workout data

### 1.0.1 — 2026-02-05

Improved stability and performance.

• Fixed hydration calculation edge cases
• Smoother animations on the progress ring
• Minor UI polish

Train hard, stay hydrated.

### 1.0 — 2026-02-03

No release notes.

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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 2026-07-23.*