Comparison

VO2 Max vs Just VO2 Max

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

Just VO2 Max

Displays your most recent VO2 Max reading from Apple Health directly on your Apple Watch face. It refreshes automatically when new data is available after your workout, keeping your health information private and on your device.

Highlights
  • VO2 Max display
  • Apple Health integration
  • Automatic refresh
  • On-device data storage
  • Read-only data access
Features
Read full description

Your VO₂ max, wherever you look first. Just VO2 Max brings your latest Apple Health estimate to three equally important places: your Apple Watch face, iPhone Home Screen, and iPhone Lock Screen. Check your value without opening an app. ON YOUR WATCH FACE Choose a circular, rectangular, or corner complication. The rectangular style also shows your trend and measurement date and time. ON YOUR HOME SCREEN Choose a small, medium, or large widget. Each shows your value, trend, and measurement date and time. The large widget adds a chart of up to six recent readings. ON YOUR LOCK SCREEN Choose a circular gauge or rectangular widget. The rectangular style shows your value, measurement date and time, and trend when available. COMPANION APPS Use the iPhone and Apple Watch apps to grant read-only Health access, refresh the shared reading, and check setup. The iPhone app also shows up to six recent readings. SIMPLE AND PRIVATE • Free, with no account or subscription • Read-only access to VO₂ max in Apple Health • Health readings stay on your devices • No ads in widgets, complications, or the Watch app • The iPhone companion app is supported by banner ads Just VO2 Max displays estimates already stored in Apple Health. It does not measure or calculate VO₂ max. New readings depend on Apple Health and supported workouts; iOS and watchOS manage refresh timing. The trend compares your latest estimate with up to three previous readings. Your VO₂ max values, sample dates, and sources are never sent to advertising or analytics providers. The app displays fitness information only and does not provide medical advice.

Screenshots

VO2 Max4 screens
Just VO2 Max4 screens

Verdict

The call

The clearest difference is rating: Just VO2 Max at 5.0 against VO2 Max's 3.8. Just VO2 Max also leads on in-app purchases (none vs 3). VO2 Max's advantage is ads (none vs shown) and ratings volume (130 vs 3). On price, update cadence, device support and iOS requirement 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. Just VO2 Max asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Just VO2 Max holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: VO2 Max has 130 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

VO2 Max ships an update every 10 days, Just VO2 Max every 5 days. The most recent releases landed on October 20, 2026 and October 13, 2026 respectively.

Scorecard5 real differences · 5 level
VO2 Max versus Just VO2 Max: the parameters behind the verdict, then further details
ParameterVO2 MaxJust VO2 Max
PriceFreeFree
Rating3.8 (130 ratings)5.0 (3 ratings) — better
Positive reviews26.0% of reviews—
Number of ratings130 — better3
Update frequencyEvery 10 daysEvery 5 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS18.017.0 — better
Further details — not scored
Size11 MB11 MB
Age rating4+4+
DeveloperBernhard HeringCuprea s.r.o.

Customer experience

VO2 Max

All ratings129 ratings
Positive69.0%
Neutral5.4%
Negative25.6%
Written reviews96 reviews
Positive26.0%
Neutral3.1%
Negative70.8%

Just VO2 Max

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

Just VO2 Max

No in-app purchases

Questions

Is VO2 Max free?
VO2 Max is free to download, with in-app purchases available.
Is Just VO2 Max free?
Just VO2 Max is free to download, with no in-app purchases.
Which has better reviews, VO2 Max or Just VO2 Max?
Just VO2 Max is rated higher. VO2 Max averages 3.8 out of 5 from 130 ratings, while Just VO2 Max averages 5.0 from 3 ratings.
Do VO2 Max or Just VO2 Max have ads?
Just VO2 Max shows ads; VO2 Max does not.
Which is updated more often, VO2 Max or Just VO2 Max?
VO2 Max ships an update every 10 days, and Just VO2 Max every 5 days. Most recently, VO2 Max was updated on October 20, 2026 and Just VO2 Max on October 13, 2026.

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