Comparison

VO2 Max vs VO2Max Hiit Workout

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

VO2 Max

Track your body's oxygen absorption at peak effort with detailed insights and performance estimates for running and cycling. Visualize trends, compare personal bests, and understand your cardio fitness level with a redesigned dashboard and Apple Watch integration.

Highlights
  • VO2 max estimation for running and cycling
  • Performance estimates (W/kg, FTP)
  • Redesigned dashboard with trends and personal bests
  • Interactive charts with customizable date ranges
  • Apple Watch complications and iPhone widgets
  • Cardio fitness level comparison by age and sex
Features
Read full description

VO₂ Max shows how much oxygen your body can absorb at peak effort. The redesigned dashboard puts the latest measurement, rolling averages, and your personal best in one view so you immediately see how training affects cardio fitness. ESTIMATES FOR RUN & BIKE - New tab turns VO₂ max + weight + power into W/kg and FTP estimates for running and cycling. - Compare modeled race times and power against your actual HealthKit FTP/power. NEW DASHBOARD - Trend cards highlight the 7-day average, any selected range, and your best value with percentage deltas. - The interactive chart responds to 1W, 2W, 1M, 3M, 1Y, or All filters and animates every new HealthKit reading. - Entry tiles list the test type, source, and timestamp so you can compare prediction and max-exercise tests. INSIGHTS & GUIDANCE - The info sheet matches your value with the correct age and sex bracket to explain whether it is poor, good, or superior. - Manual refresh, HealthKit warnings, and empty states keep permissions and sync issues obvious. - Trial countdown and subscription access stay a tap away. APPLE WATCH + WIDGETS - All complication families are supported, so your latest VO₂ max is available on every watch face. - iPhone Home Screen and Lock Screen widgets follow the dashboard range you selected. - The Widget Showcase walks you through pinning widgets or complications and previewing layouts. HOW VO₂ MAX IS CAPTURED 1. Wear Apple Watch for at least 24 hours, then record several Outdoor Walk, Outdoor Run, or Hiking workouts with heart rate and GPS. 2. Apple may need several qualifying workouts and passive measurements before the first VO₂ max estimate appears. 3. Give this app read access to Cardio Fitness (VO₂ Max) in Apple Health so the dashboard, widgets, and complications can display the data. Requires Apple Watch Series 3 or later. VO₂ Max makes it easy to see if your cardio fitness plan is working today, over the last weeks, and all time. Terms and conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

VO2Max Hiit Workout

Boost your aerobic capacity with science-backed HIIT protocols. This app offers precise, customizable interval training sessions designed by athletes. Train longer with optimized battery usage.

Highlights
  • Science-backed HIIT protocols
  • Customizable workouts
  • Precise interval timers
  • Low battery drain
  • Multiple training types (Norwegian 4x4, Tabata, Wingate)
Features
Read full description

Science-based HIIT protocols to boost your VO2Max. Built by athletes, precise to the second. Increase your VO2Max with science-backed interval training protocols used by elite athletes. Proven protocols following the latest (or oldest) research papers Norwegian 4x4, Tabata, Wingate, and conventional HIIT workouts designed to maximize aerobic capacity. Built and used by athletes that seek to improve their performance (VO2Max or regular calisthenics). Timers accurate to the second—no 10-second delays that throw off your intervals like most apps. 18% less battery drain than competing apps. Train longer without worrying about your phone dying mid-workout. Fully Customizable (adjust any protocol or any workout) Adjust work/rest intervals, rounds, and intensity to match your fitness level and goals. What you'll find in this app : VO2Max, HIIT, various interval trainings, Norwegian 4x4, Conventional (60/60) Tabata (20/10), Wingate (30/240), aerobic fitness, endurance training, cardio workouts

Screenshots

VO2 Max4 screens
VO2Max Hiit Workout4 screens

Verdict

The call

The clearest difference is rating: VO2 Max at 3.8 against VO2Max Hiit Workout's 2.0. VO2 Max also leads on ads (none vs shown) and ratings volume (131 vs 1). VO2Max Hiit Workout's advantage is in-app purchases (none vs 3) and iOS requirement (15.6 vs 18.0). On price, update cadence and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. VO2 Max sells 3 in-app purchases, starting at $2.99 per month. VO2Max Hiit Workout asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

VO2 Max holds the better App Store score, 3.8 against 2.0. That said, the two scores are not equally well evidenced: VO2 Max has 131 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard6 real differences · 4 level
VO2 Max versus VO2Max Hiit Workout: the parameters behind the verdict, then further details
ParameterVO2 MaxVO2Max Hiit Workout
PriceFreeFree
Rating3.8 (131 ratings) — better2.0 (1 ratings)
Positive reviews26.0% of reviews—
Number of ratings131 — better1
Update frequencyEvery 10 daysEvery 10 days
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS18.015.6 — better
Further details — not scored
Size11 MB104 MB
Age rating4+12+
DeveloperBernhard HeringUnscripted Engineering

In-app purchases

3 purchases

VO2 Max

Subscriptions2
  • Monthly Subscription$2.991 Month
  • Yearly Subscription$22.991 Year
One-time1
  • Lifetime Access$79.99
None

VO2Max Hiit Workout

No in-app purchases

Questions

Is VO2 Max free?
VO2 Max is free to download, with in-app purchases available.
Is VO2Max Hiit Workout free?
VO2Max Hiit Workout is free to download, with no in-app purchases.
Which has better reviews, VO2 Max or VO2Max Hiit Workout?
VO2 Max is rated higher. VO2 Max averages 3.8 out of 5 from 131 ratings, while VO2Max Hiit Workout averages 2.0 from 1 ratings.
Do VO2 Max or VO2Max Hiit Workout have ads?
VO2Max Hiit Workout shows ads; VO2 Max does not.
Which is updated more often, VO2 Max or VO2Max Hiit Workout?
VO2 Max ships an update every 10 days, and VO2Max Hiit Workout every 10 days. Most recently, VO2 Max was updated on October 24, 2026 and VO2Max Hiit Workout on October 22, 2026.

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