# VO2 Prime vs JoiApp

The clearest difference is update cadence: JoiApp at every 2 weeks against VO2 Prime's monthly. On price, ads, 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.

VO2 Prime ships an update monthly, JoiApp every 2 weeks. The most recent releases landed on October 21, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | VO2 Prime | JoiApp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 62 MB | 69 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [EndoMedical Inc](https://appshunter.io/developer/1290814301) | [Szupia Inc.](https://appshunter.io/developer/1852403685) |

## What reviewers say

### VO2 Prime

[App page](https://appshunter.io/ios/app/vo2-prime/id6748883572)

**Features:** Apple Watch app

**In-app purchases:** none


### JoiApp

[App page](https://appshunter.io/ios/app/joiapp/id6755168627)

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

**In-app purchases:** none


## Frequently asked questions

### Is VO2 Prime free?

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

### Is JoiApp free?

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

### Do VO2 Prime or JoiApp have ads?

Neither VO2 Prime nor JoiApp shows ads.

### Which is updated more often, VO2 Prime or JoiApp?

VO2 Prime ships an update monthly, and JoiApp every 2 weeks. Most recently, VO2 Prime was updated on October 21, 2026 and JoiApp on October 28, 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.*