# VO2 Max: Widget Notifications — VO2 Max Performance Insights

> Measures and analyzes VO2 max for cardio fitness insights and performance estimates. (iPhone/iPad app by Bernhard Hering.)

- Source: https://appshunter.io/ios/app/vo2-max-widget-notifications/id1394840943 (this page in markdown: same URL + `.md`)
- Developer: [Bernhard Hering](https://appshunter.io/developer/327542085)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases (on sale, was $1.99)
- Rating: 3.80/5 from 127 App Store ratings · 92 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 10 MB
- Languages: Bangla, Bulgarian, Hindi, American English, Arabic, Dutch, European Spanish, Italian, German (Germany), European Portuguese and 9 more
- Released: 2018-07-22
- Data updated: 2026-09-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/vo2-max-widget-notifications/id1394840943/reviews.md

## What is VO2 Max?

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/

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Yearly Subscription | $17.99 | per year |
| Monthly Subscription | $2.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Access | $79.99 | one-time |


## Recent user reviews (10 of 92)

All indexed reviews: https://appshunter.io/ios/app/vo2-max-widget-notifications/id1394840943/reviews.md

### 4/5 — Nice UI but not Free

*2026-08-08*

Hey Devs! Hoping for a response here. I really like the app, but after a while I just get locked out whenever I try to open it, and it shows me options to buy pro, with no option for a free plan. I wish there was a free plan.

**Developer response:** Hi, thanks for your kind words about the app and its design. You’re right: VO2 Max currently includes a two-day free trial, but does not offer a permanent free plan. After the trial, continued access requires a monthly or yearly subscription, or a one-time lifetime purchase. I’m sorry this wasn’t clear enough before downloading.
I’ve also recently fixed issues that could incorrectly show the paywall to existing subscribers or lifetime customers. If you have already purchased the app, please update to the latest version and tap “Restore Purchases.” If that doesn’t help, please contact me at mail@bernhardhering.de so I can investigate.

### 5/5 — Tolle App, nutze sie täglich auf meiner Apple Watch

*2026-07-27*

Ich nutze die App quasi täglich, weil ich die Apple Watch Komplikation nutze, um meine VO2 Max Wert im Blick zu haben. Die Weiterentwicklung der App über die letzten Monate ist sehr gelungen, mit vielen guten Insights und relevanten Visualisierungen.
Vielen Dank auch für den schnellen und freundlichen Support!

**Developer response:** Danke für die Bewertung! Ich bin wirklich froh zu hören, dass Sie unsere App nutzen und von den neuen Funktionen und Visualisierungen begeistert sind. Ihr Feedback ist für uns sehr wertvoll, und wir arbeiten kontinuierlich daran, die App noch besser zu machen. Wenn Sie noch weitere Fragen oder Anregungen haben, zögern Sie nicht, uns zu kontaktieren!

### 5/5 — Great addition

*2026-05-01*

This app works locally on your watch without a connection so you can view your Vo2 max without needing to use your phone. It makes it that much closer to a Garmin. The mobile app is also feature rich and gives more in depth information about your Vo2max than other apps I’ve tried.

**Developer response:** Thank you so much for your review! I'm thrilled to hear that you're enjoying the app's local functionality and appreciate the depth of information it provides. We're constantly working to improve the app, and your feedback is invaluable in that process.

### 1/5 — Very disappointed

*2026-03-01, version 2.8.3*

Advised App owner that it no longer worked on my apple phone but not even an acknowledgement. I strongly advise that if anyone intends to use this app that they check that it is compatible with their watch.

### 4/5 — Getting better

*2026-02-20*

Love the new update with the Cooper test, but for the developer: the moment one enters a number into the Cooper test field, the app becomes unusable because you can’t leave the page anymore. Whoops.

**Developer response:** Thanks for the feedback, you’re absolutely right. We fixed the issue where the keyboard could trap you on the Cooper test screen, and the fix will be in the next update.

### 1/5 — Honteux

*2026-02-18*

J ai acheté l’application à vie il y a 2 ans
Depuis la nouvelle mise à jour je dois à nouveau payer 
Scandaleux
Je fais partie des early users et la récompense c’est de payer à nouveau

### 5/5 — Good app

*2026-01-26*

Nice app. Thanks for fixing the purchase for existing customers

**Developer response:** Sorry, I made a mistake when migrating existing customers. Could you please send me an email at info@bernhardhering.de? Best, Bernhard

### 5/5 — VO2 APP

*2026-01-23*

After the resolution of a problem I am now happy with the app and have used it for a number of years.

### 5/5 — Another purchase fee??? Update

*2026-01-22*

Update:  the developer contacted me, apologized for the situation, and honored my original purchase. I was really surprised to hear back from him so quickly and I appreciate his response.  The app is fully functional and I’m able to access everything as before. So 5 stars for the app and customer support.
Bought the app before it became a subscription service. Now developer wants more money for a “lifetime” subscription.  Option to prove you paid before doesn’t work.  
Is it worth another $7?

**Developer response:** Sorry, I made a mistake when migrating existing customers. Could you please send me an email at info@bernhardhering.de? Best, Bernhard

### 5/5 — Very useful app with great customer support

*2026-01-22*

I started using the app a few months ago and found it very informative from day 1.  During a recent data migration I lost access and was asked to pay again for the app.  I contacted the developer and he honored my original purchase - so I’m back to tracking my VO2.

## Frequently asked questions about VO2 Max

### What is VO2 max and how does this app measure it?

VO2 max represents the maximum amount of oxygen your body can absorb and utilize during peak physical exertion. This app estimates your VO2 max by utilizing data from outdoor walks or runs tracked with continuous heart-rate monitoring for at least 20 minutes, with the Workout app running and GPS enabled on your Apple Watch.

### What kind of performance estimates does the app provide?

The app provides estimates for running and cycling by converting your VO2 max and weight into W/kg and FTP (Functional Threshold Power) values. It also allows you to compare modeled race times and power outputs against your actual HealthKit FTP or power meter data.

### Is this app free to use?

The app offers a free version with in-app purchases for advanced features and full access. A trial countdown is available, and subscription access is clearly indicated within the app.

### What are the compatibility requirements for this app?

To use this app, you will need an Apple Watch Series 3 or later. The app also requires access to your HealthKit data via the Health app on your iPhone to display VO2 max, widgets, and complications.

### How can I see if my cardio fitness plan is working?

The app's redesigned dashboard provides immediate insights into how your training affects your cardio fitness. You can view your latest measurement, rolling averages, and personal bests, along with trend cards highlighting 7-day averages and selected date ranges to track progress over time.

## Version history (last 5 releases)

### 2.8.19 — 2026-08-31

The Apple Watch complication now shows a dash instead of an incorrect zero when VO₂ max data is missing.

### 2.8.18 — 2026-08-24

Improved stability for VO₂ max background updates on Apple Watch.

### 2.8.17 — 2026-08-13

New in this version:

- The dashboard now explains when measurements cannot be shown because Apple Health read access or Cardio Fitness data is missing.
- Connect Apple Health or reload data manually from the empty state.
- First VO₂ max estimates may require wearing Apple Watch for at least 24 hours and completing several Outdoor Walk, Outdoor Run or Hiking workouts, alongside passive measurements.

### 2.8.16 — 2026-08-11

New in this version:

- Privacy-conscious App Store campaign measurement helps us understand how VO₂ Max is discovered—without tracking across apps or websites.
- Minor stability improvements for iPhone, widgets and Apple Watch.

### 2.8.14 — 2026-08-08

New in this version:

- Your VO₂ max now includes a clear interpretation, so it is easier to understand what your score means.
- The iPhone dashboard has been refined with clearer trends, ranges and progress context.
- The Apple Watch dashboard has been polished for faster reading during training.

## Apps similar to VO2 Max

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [VO2 max Hero - AI Tracker](https://appshunter.io/ios/app/vo2-max-hero-ai-tracker/id6745514867) | 1.0 (1) | Free | Health & Fitness |
| [VO2 Master Manager](https://appshunter.io/ios/app/vo2-master-manager/id936519055) | 4.0 (9) | Free | Health & Fitness |
| [Cardiolytics: VO2 Max Health](https://appshunter.io/ios/app/cardiolytics-vo2-max-health/id6749484835) | 4.1 (17) | Free | Health & Fitness |
| [VO2 Max Pro: Track Fitness Age](https://appshunter.io/ios/app/vo2-max-pro-track-fitness-age/id6740225781) | 4.7 (32) | Free | Health & Fitness |
| [VO2 Max Trainer: HIIT, Zone 2](https://appshunter.io/ios/app/vo2-max-trainer-hiit-zone-2/id6736629740) | 3.0 (2) | Free | Health & Fitness |
| [12 Minute VO2 Max](https://appshunter.io/ios/app/12-minute-vo2-max/id6745093199) | — | Free | Health & Fitness |

## More apps by Bernhard Hering

- [StepRace: Turn-Based Racing](https://appshunter.io/ios/app/steprace-turn-based-racing/id335141639)
- [Hanglage - Skimo Computer](https://appshunter.io/ios/app/hanglage-skimo-computer/id344104114)
- [7 Minute Guitar Workout](https://appshunter.io/ios/app/7-minute-guitar-workout/id1067271156)
- [Altimeter Elevation Watch](https://appshunter.io/ios/app/altimeter-elevation-watch/id1306145803)
- [HRV Watch: Stress & Recovery](https://appshunter.io/ios/app/hrv-watch-stress-and-recovery/id1368079276)

All apps by Bernhard Hering: https://appshunter.io/developer/327542085

## Related topics

[vo2max cardio & performance](https://appshunter.io/ios/topics/vo2max-cardio-performance) · [vo2max health and performance](https://appshunter.io/ios/topics/vo2max-health-and-performance) · [vo2max calculator](https://appshunter.io/ios/topics/vo2max-calculator) · [vo2 max pro](https://appshunter.io/ios/topics/vo2-max-pro)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*