# VO2 Max Calculator vs Viscera

The clearest difference is update cadence: Viscera at monthly against VO2 Max Calculator's every 7 months. VO2 Max Calculator's advantage is iOS requirement (15.6 vs 18.5). On price, ads, in-app purchases and device support there is nothing between them.

VO2 Max Calculator costs $1.99 and Viscera $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

VO2 Max Calculator ships an update every 7 months, Viscera monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | VO2 Max Calculator | Viscera |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | **[2.4 (14 ratings)](https://appshunter.io/ios/app/vo2-max-calculator/id1586812282/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 38.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | Paid | — |
| Size | 1 MB | 3 MB |
| Requires iOS | **15.6** | 18.5 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Theo Scott](https://appshunter.io/developer/691156625) | [Hans Christian Christensen](https://appshunter.io/developer/1843828134) |

## What reviewers say

### VO2 Max Calculator

[App page](https://appshunter.io/ios/app/vo2-max-calculator/id1586812282)

This app calculates your VO2 Max in just 3 minutes using a simple heart rate method. It's based on scientific research and provides general health information, not medical advice.

**Highlights:** Passive VO2 Max reading, 3-minute calculation, Based on scientific research, General health information, Video tutorial available

**Features:** Apple Watch app

**In-app purchases:** none


### Viscera

[App page](https://appshunter.io/ios/app/viscera/id6753583907)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is VO2 Max Calculator free?

VO2 Max Calculator costs $1.99, with no in-app purchases.

### Is Viscera free?

Viscera costs $1.99, with no in-app purchases.

### Do VO2 Max Calculator or Viscera have ads?

Neither VO2 Max Calculator nor Viscera shows ads.

### Which is updated more often, VO2 Max Calculator or Viscera?

VO2 Max Calculator ships an update every 7 months, and Viscera monthly. Most recently, VO2 Max Calculator was updated on October 24, 2026 and Viscera on October 25, 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.*