# VO2 STUDIO vs Drink Note

The clearest difference is in-app purchases: VO2 STUDIO at none against Drink Note's 2. VO2 STUDIO also leads on iOS requirement (15.0 vs 17.0). Drink Note's advantage is update cadence (monthly vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Drink Note sells 2 in-app purchases, starting at $2.99 per month. VO2 STUDIO asks for nothing beyond the download.

VO2 STUDIO ships an update every 3 months, Drink Note monthly. The most recent releases landed on September 20, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | VO2 STUDIO | Drink Note |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/drink-note-water-tracker/id6578414662/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 210 MB | 27 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 12+ | 12+ |
| Developer | [VO2 TRAINING SA](https://appshunter.io/developer/1648270657) | [Aleksandr Stupak](https://appshunter.io/developer/1759446177) |

## What reviewers say

### VO2 STUDIO

[App page](https://appshunter.io/ios/app/vo2-studio/id1237176267)

**Features:** macOS Compatibility

**In-app purchases:** none


### Drink Note

[App page](https://appshunter.io/ios/app/drink-note-water-tracker/id6578414662)

Track your daily water, sugar, and caffeine intake with personalized limits and detailed statistics. Log drinks quickly with interactive widgets and Siri Shortcuts. Integrates with Apple Health for a complete health overview.

**Highlights:** Track water, sugar, and caffeine intake, Personalized intake limits, Detailed statistics and body state estimation, Interactive widgets and Siri Shortcuts, Apple Health integration, Customizable drink types

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annual | $9.99 | per year |


## Frequently asked questions

### Is VO2 STUDIO free?

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

### Is Drink Note free?

Drink Note is free to download, with in-app purchases available.

### Do VO2 STUDIO or Drink Note have ads?

Neither VO2 STUDIO nor Drink Note shows ads.

### Which is updated more often, VO2 STUDIO or Drink Note?

VO2 STUDIO ships an update every 3 months, and Drink Note monthly. Most recently, VO2 STUDIO was updated on September 20, 2026 and Drink Note on September 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.*