# Hydra vs OneScoop

The clearest difference is iOS requirement: Hydra at 15.1 against OneScoop's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Hydra sells 2 in-app purchases, starting at $6.99 per month and OneScoop sells 2 in-app purchases, starting at $3.99 per year. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Hydra | OneScoop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Size | 41 MB | 7 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [Ryan Creary](https://appshunter.io/developer/1819349085) | [Atalay ALTINISIK](https://appshunter.io/developer/6806372590) |

## What reviewers say

### Hydra

[App page](https://appshunter.io/ios/app/hydra-water-tracker/id6764020000)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hydra Pro Monthly | $6.99 | per month |
| Hydra Pro Annual | $39.99 | per year |


### OneScoop

[App page](https://appshunter.io/ios/app/onescoop-creatine-tracker/id6811408717)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OneScoop+ Yearly | $3.99 | per year |
| OneScoop+ | $9.99 | one-time |


## Frequently asked questions

### Is Hydra free?

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

### Is OneScoop free?

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

### Do Hydra or OneScoop have ads?

Neither Hydra nor OneScoop 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.*