# Just VO2 Max vs ParamWatch

The clearest difference is ads: ParamWatch at none against Just VO2 Max's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Just VO2 Max ships an update every 6 days, ParamWatch every 11 days. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Just VO2 Max | ParamWatch |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/just-vo2-max/id6790672784/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 11 days |
| Monetization | Ad-supported | — |
| Size | 14 MB | 1 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Cuprea s.r.o.](https://appshunter.io/developer/6790557326) | [Luca Ceci](https://appshunter.io/developer/923764949) |

## What reviewers say

### Just VO2 Max

[App page](https://appshunter.io/ios/app/just-vo2-max/id6790672784)

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:** Apple Watch app

**In-app purchases:** none


### ParamWatch

[App page](https://appshunter.io/ios/app/paramwatch/id6804263437)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Just VO2 Max free?

Just VO2 Max is free to download, with no in-app purchases.

### Is ParamWatch free?

ParamWatch is free to download, with no in-app purchases.

### Do Just VO2 Max or ParamWatch have ads?

Just VO2 Max shows ads; ParamWatch does not.

### Which is updated more often, Just VO2 Max or ParamWatch?

Just VO2 Max ships an update every 6 days, and ParamWatch every 11 days. Most recently, Just VO2 Max was updated on October 24, 2026 and ParamWatch on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*