HYDROX vs Repz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HYDROX
This app calculates your personalized daily hydration target based on body weight and training intensity, using scientific protocols. It offers one-tap logging, smart reminders, and advanced features for athletes and fitness enthusiasts. Syncs with HealthKit and offers an Apple Watch app.
- Personalized hydration targets
- Training intensity adjustment
- One-tap logging
- Smart reminders
- HealthKit sync
- Apple Watch app
- Widgets for home and lock screen
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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
Repz
This app creates personalized training plans for HYROX races, adapting to your weaknesses, available equipment, and race date. It offers video guidance for every exercise and adjusts workouts based on your logged performance and missed sessions.
- Personalized HYROX training plans
- Adaptive workouts based on performance
- Targets weaknesses and equipment availability
- Video demonstrations for all exercises
- Division-specific weight and target adjustments
- Race simulation and threshold run training
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Stop guessing. Start training. Repz builds your HYROX training plan around your weaknesses, your equipment, and your race date. Then it adapts to what you actually do. Your first race or your tenth, the plan fits you. BUILT FOR HYROX. ONLY HYROX. Repz is an official HYROX Online Training Partner. Every session targets what the race demands: station work, Threshold Runs, Race Simulations, and the strength that holds it all together. Not a "HYROX mode" bolted onto a generic fitness app. FOR EVERY DIVISION Open, Pro, or Doubles. Set your division and Repz prescribes the right weights and targets for it. HOW IT STARTS Download Repz and answer a few questions: your race date, your level, your equipment. Your plan is ready in minutes, and your free trial starts after setup. TARGET YOUR WEAK POINTS You know where you lose time. Prioritize up to two stations, switch on a running focus if you need it, and your plan shifts volume toward them. Change focus anytime. ADAPTS TO WHAT YOU DO Adjust any weight, distance, or duration on the fly. Your next sessions recalibrate to what you actually logged. Miss a session? The plan adjusts. Hit a new record? It progresses you. VIDEO ON EVERY EXERCISE Tap any movement to see exactly how it's done. Never done a Romanian deadlift or a thruster? You'll know in seconds. TRAIN WITH WHAT YOU HAVE Tell Repz your setup: full HYROX kit, home gym, hotel dumbbells. Deselect what you don't have. We swap in the right alternative, reps and weights adjusted to keep the stimulus. Exercise doesn't fit your day? One tap swaps it. EVERY SESSION HYROX DEMANDS Threshold Runs that raise your sustainable pace. Strength Days built around the stations. Race Simulations that train running on tired legs. Hybrid Engine, Long Runs, Active Recovery. Train 2 to 7 days a week; the plan balances your week toward race day. YOUR WEEK, PLANNED FOR YOU Open the app, see your week. Move sessions to the days that work. Every workout comes with a warm-up, a clear structure, and a reason it's in your week. WHAT EARLY ACCESS ATHLETES SAY "This is by far the best of these kind of apps that I have tried so far. The workouts are varied and challenging but achievable." (Roger, 2 races completed) "Great programming, pretty easy to use, stats and Hyrox-specific features like race times and future planning is fantastic." (Juliette, 3+ races completed) "I really love the fact that the training adapt to my progress! Big win." (Thomas, preparing for his first HYROX) ONE PLAN, EVERYTHING INCLUDED Repz is free to download. Set up your plan, start your free trial, and one subscription unlocks everything, monthly or yearly. Auto-renews unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store settings. Terms: https://repz.app/terms Privacy: https://repz.app/privacy
Screenshots
Verdict
The clearest difference is ads: HYDROX at none against Repz's shown. On price, rating, ratings volume and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. HYDROX sells 4 in-app purchases, starting at $0.99 per 7 days and Repz sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for HYDROX against 5.0 for Repz. Both are backed by a comparable volume of ratings — 4 and 6 respectively.
HYDROX ships an update weekly, Repz every 5 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.
| Parameter | HYDROX | Repz |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) | 5.0 (6 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 | 6 — better |
| Update frequency | Weekly | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | BALL VENTURES LLC | Zenon Technologies AG |
Customer experience
HYDROX
Repz
In-app purchases
HYDROX
- HYDROX Pro7 Days trial$0.997 Days
- HYDROX Pro7 Days trial$24.991 Year
- HYROX Americas DC Race Pack$14.99
- HYROX Miami Race Pack$14.99
Repz
- Repz Monthly Membership7 Days trial$19.991 Month
- Repz Yearly Membership7 Days trial$119.991 Year








