VO2 Max vs Activity Complications
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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/
Activity Complications
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Activity Complications is a standalone Apple Watch Application. Allows to track activities such as burned calories-active energy, exercise, steps, sleep and water from Health app through Integration. Optionally tracking limits could be integrated to Nutrition+ apps via https://glucoseplusapp.com user's account, thus adding an extra colour-coded complication to track an additional activity level. Allows to add water readings quickly to Health app and to Nutrition+ app. Allows to customize activities tracking limits for both apps used by the complication and rings. The complication could display any current activity as per user's convenience, the app automatically syncs the latest activity level keeping the complication updated both the text and the main colourful graphic Corner or graphic Circle complications among others. Apple Watch notifies accordingly to low levels of the current activity or water being tracked, also allows to change the time period to refresh the app data, also advises by voice when app is active. Finally it displays Apple activity rings and steps, sleep and water current activity level with individual colour-coded rings displaying its reached percentage.
Screenshots
Verdict
The clearest difference is price: VO2 Max at Free against Activity Complications's $2.99. VO2 Max also leads on update cadence (every 10 days vs every 2 months) and iOS requirement (18.0 vs 26.0). Activity Complications's advantage is in-app purchases (none vs 3). On ads 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
VO2 Max is free to download; Activity Complications costs $2.99 up front. VO2 Max sells 3 in-app purchases, starting at $2.99 per month. Activity Complications asks for nothing beyond the download.
VO2 Max ships an update every 10 days, Activity Complications every 2 months. The most recent releases landed on September 26, 2026 and September 23, 2026 respectively.
| Parameter | VO2 Max | Activity Complications |
|---|---|---|
| Price | Free — better | $2.99 |
| Rating | 3.8 (127 ratings) — better | — |
| Positive reviews | 26.6% of reviews | — |
| Number of ratings | 127 — better | — |
| Update frequency | Every 10 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 18.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 10 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Bernhard Hering | Edison Cuenca |
In-app purchases
VO2 Max
- Monthly Subscription$2.991 Month
- Yearly Subscription$17.991 Year
- Lifetime Access$79.99
Activity Complications
No in-app purchases
Questions
Is VO2 Max free?
Is Activity Complications free?
Do VO2 Max or Activity Complications have ads?
Which is updated more often, VO2 Max or Activity Complications?
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