VO2Max Training vs GymHardr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VO2Max Training
Improve your cardiovascular fitness with science-backed training protocols and real-time coaching. Track your progress, visualize trends, and receive AI-powered insights to enhance your body's oxygen utilization for better health and longevity.
- Science-backed training protocols
- Real-time Apple Watch coaching
- Progress tracking and visualization
- AI-powered personalized insights
- Fitness age monitoring
- Workout history
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VO₂Max is the strongest predictor of how long you'll live. Now you can actually improve it. If you've read about VO₂Max in longevity research or seen it on your Apple Watch, you know it matters. But knowing your number isn't enough—you need structured training to improve it. VO₂max Training is built natively for iPhone and Apple Watch: science-backed protocols, a guided session timer, progress tracking, and AI insights—so you can train with purpose and see real cardiovascular gains. A SPECIALIZED TRAINING APP FOR THOSE WHO CARE No more web wrapper. VO₂max Training is rebuilt as a true iOS experience with dedicated tabs for training, tracking, and insights—faster, smoother, and designed for real workouts on your phone and watch. TRAIN — STRUCTURED VO₂MAX WORKOUTS • Browse research-backed protocols (Norwegian 4×4, Tabata, Zone 2, and more) • Follow guided interval sessions with work/rest timing, pause, and skip • Build training plans with simple or advanced plan builders • Customize workouts with the interval builder and preview sessions before you train • Log post-workout heart rate and notes when you finish • Earn badges as you build consistency APPLE WATCH & LIVE COACHING • Start and control workouts from your Apple Watch • See live heart rate on your iPhone during sessions • Stay on pace with segment guidance and haptic cues • Follow your session on the Lock Screen with Live Activity • Train with confidence in the right intensity—not too easy, not too hard TRACK — SEE YOUR PROGRESS • Review session metrics and workout history • Monitor weekly metrics and training load over time • Connect Apple Health to enrich your data • Export your training history when you need it • Add a Home Screen widget for Resting Heart Rate and VO₂ Max INSIGHTS — TRAIN SMARTER • Get personalized cardiovascular insights based on your training data • Understand trends in your fitness and recovery with clear, actionable analysis • Unlock deeper cloud-powered insights with VO₂max Premium RESEARCH-BACKED PROTOCOLS Every protocol is grounded in peer-reviewed exercise science and designed specifically for VO₂max improvement—not random workouts. AI-POWERED GUIDANCE Our insights adapt as you improve, helping you understand what's working and what to focus on next—grounded in your data and the latest exercise science. WHO IS THIS FOR? VO₂max Training is for health-conscious adults who know cardiovascular fitness is foundational to longevity. If you're already exercising and want to train smarter—not just harder—this app is for you. GETTING STARTED • Complete quick onboarding to set up your profile and get a protocol recommendation • Sign in with Apple, Google, or email • Pick a protocol, start a guided session, and track your progress over time • Connect Apple Watch for live heart rate during workouts VO₂MAX PREMIUM Upgrade for unlimited training sessions, advanced AI insights, and full access to planning tools. Try Premium free for 1 week—cancel anytime. WHY VO₂MAX MATTERS VO₂Max measures your body's ability to use oxygen during exercise. Research shows it's one of the strongest predictors of longevity—more predictive than many common risk factors. Each meaningful improvement in VO₂max is associated with better cardiovascular health and long-term independence. You can't improve what you don't know how to train. We make VO₂max improvement accessible. Start training for longevity today. Terms of Use (EULA): https://vo2max.app/terms Privacy Policy: https://vo2max.app/privacy
GymHardr
This app helps users build a symmetrical and strong physique by tracking workouts for left and right sides independently. It identifies muscle imbalances, provides personalized plans, and visualizes progress with charts and photos. Achieve your aesthetic goals without guesswork.
- Track left and right sides separately
- Identify weaker sides with data
- Muscle radar charts for undertrained areas
- Progress photos and body diagrams
- Personalized workout plans
- Exercise library and custom exercises
- Log sets, reps, weights, and measurements
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GymHardr: Fix Uneven Muscles. BECOME AESTHETIC. You train hard, but your left side lags behind. Your shoulders, chest, or arms aren't balanced. Most apps track workouts—but ignore your body. GymHardr is different. Track your left and right sides independently, spot weaknesses, and finally fix muscle imbalances. Build a symmetrical, strong, and confident physique—without guessing. Why GymHardr Works for You - Fix Imbalances & Build Symmetry - Train left and right sides separately for every exercise - Identify weaker sides with clear strength and volume data - Muscle radar charts reveal undertrained areas - Progress photos and body diagrams show exactly where you need work - Stop Guessing. Start Progressing - Premade workouts and personalized plans based on your goals - Browse exercises in a dedicated library or create your own - Add new exercises mid-workout and update templates - Emoji support for custom exercises - Norwegian 4x4 cardio program with VO2 max tracking - Track Everything, See Results - Automatic logging of sets, reps, and weights in real time - Personal Records modal to filter PRs by body part - Exercise volume trends, total training volume, and streaks - Jump to any month/year on your workout calendar - Log measurements, weight, and view progress graphs - Anatomy view: male/female, front/side/back - See muscle recovery and get gentle recovery hints - Ultimate Workout Experience - Finish workouts early—only completed exercises are saved - New cardio options: Treadmill, Stationary Bike, Assult Bike etc. - NEW! Earn achievements as you train - Redesigned onboarding - Drag and reposition your floating rest timer - Share summaries and compare PRs against your baseline No more guesswork. No more uneven muscles. No stalled gains. Fix your weak side. Build symmetry. BECOME AESTHETIC and Download GymHardr today. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: GymHardr at 5.0 against VO2Max Training's 4.5. GymHardr also leads on review sentiment (100% vs 75%) and iOS requirement (15.1 vs 18.2). VO2Max Training's advantage is update cadence (every 11 days vs every 5 weeks) and ratings volume (8 vs 2). On price, ads, in-app purchases and monetization model 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. VO2Max Training sells 2 in-app purchases, starting at $4.99 per month and GymHardr sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
GymHardr holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews point the same way: 75% of VO2Max Training's written reviews are positive against 100% of GymHardr's.
VO2Max Training ships an update every 11 days, GymHardr every 5 weeks. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.
| Parameter | VO2Max Training | GymHardr |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (8 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 75.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 8 — better | 2 |
| Update frequency | Every 11 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Requires iOS | 18.2 | 15.1 — better |
| Further details — not scored | ||
| Size | 28 MB | 174 MB |
| Age rating | 4+ | 4+ |
| Developer | Hesam Andalib | Taizen Labs LLC |
Customer experience
VO2Max Training
GymHardr
In-app purchases
VO2Max Training
- VO2Max Premium Monthly7 Days trial$4.991 Month
- VO2Max Premium Yearly7 Days trial$49.991 Year
GymHardr
- GymHardr Pro · Monthly3 Days trial$4.991 Month
- GymHardr Pro · Yearly3 Days trial$39.991 Year









