# VO2 vs Braces Rubber Band Tracker

The clearest difference is iOS requirement: VO2 at 15.6 against Braces Rubber Band Tracker's 17.0. 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.

## The numbers

| Metric | VO2 | Braces Rubber Band Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Size | 31 MB | 13 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [V O TWO GYM](https://appshunter.io/developer/1782086395) | [Metodij Zdravkin](https://appshunter.io/developer/734250847) |

## What reviewers say

### VO2

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Braces Rubber Band Tracker

[App page](https://appshunter.io/ios/app/braces-rubber-band-tracker/id6805776876)

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

**In-app purchases:** none


## Frequently asked questions

### Is VO2 free?

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

### Is Braces Rubber Band Tracker free?

Braces Rubber Band Tracker is free to download, with no in-app purchases.

### Do VO2 or Braces Rubber Band Tracker have ads?

Neither VO2 nor Braces Rubber Band Tracker shows ads.

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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.*