# 水素吸入管理アプリ【Hydrogen】 vs Hydria

The clearest difference is in-app purchases: 水素吸入管理アプリ【Hydrogen】 at none against Hydria's 4. 水素吸入管理アプリ【Hydrogen】 also leads on iOS requirement (13.0 vs 17.0). Hydria's advantage is device support. On price there is nothing between them.

Both are free to download. Hydria sells 4 in-app purchases, starting at $4.99 per 7 days. 水素吸入管理アプリ【Hydrogen】 asks for nothing beyond the download.

## The numbers

| Metric | 水素吸入管理アプリ【Hydrogen】 | Hydria |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Weekly |
| Size | 4 MB | 15 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | — | **iPhone, iPad, Mac, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [BILEI Inc.](https://appshunter.io/developer/955644733) | [HUGO ANATOLE PAUL MORICEAU](https://appshunter.io/developer/1845368412) |

## What reviewers say

### 水素吸入管理アプリ【Hydrogen】

[App page](https://appshunter.io/ios/app/hydrogen/id1483886495)

**In-app purchases:** none


### Hydria

[App page](https://appshunter.io/ios/app/hydria-water-tracker/id6784491822)

**Features:** Apple Watch app

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $9.99 | per month |
| Yearly | $29.99 | per year |
| Hydria Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is 水素吸入管理アプリ【Hydrogen】 free?

水素吸入管理アプリ【Hydrogen】 is free to download, with no in-app purchases.

### Is Hydria free?

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

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*