# Curve Center vs VO2

The clearest difference is update cadence: VO2 at every 4 months against Curve Center's every 22 months. Curve Center's advantage is iOS requirement (13.0 vs 15.6). 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.

Curve Center ships an update every 22 months, VO2 every 4 months. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Curve Center | VO2 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 4 months** |
| Size | 59 MB | 31 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TAMARRAN SPORTS ONLINE SERVICES W.L.L](https://appshunter.io/developer/1592958121) | [V O TWO GYM](https://appshunter.io/developer/1782086395) |

## What reviewers say

### Curve Center

[App page](https://appshunter.io/ios/app/curve-center/id6502961740)

**In-app purchases:** none


### VO2

[App page](https://appshunter.io/ios/app/vo2/id6738731923)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Curve Center free?

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

### Is VO2 free?

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

### Do Curve Center or VO2 have ads?

Neither Curve Center nor VO2 shows ads.

### Which is updated more often, Curve Center or VO2?

Curve Center ships an update every 22 months, and VO2 every 4 months. Most recently, Curve Center was updated on October 27, 2026 and VO2 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.*