# Water Reminder vs Hydra

The clearest difference is in-app purchases: Hydra at none against Water Reminder's 3. Hydra also leads on iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Water Reminder sells 3 in-app purchases, starting at $4.99 per month. Hydra asks for nothing beyond the download.

## The numbers

| Metric | Water Reminder | Hydra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Size | 16 MB | 23 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Boran PARMAKSIZ](https://appshunter.io/developer/1889084302) | [Obadah Almheidat](https://appshunter.io/developer/6783860344) |

## What reviewers say

### Water Reminder

[App page](https://appshunter.io/ios/app/water-reminder-tracker-coach/id6771927756)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Aylık | $4.99 | per month |
| Premium Yıllık | $29.99 | per year |
| Premium Ömür Boyu | $69.99 | one-time |


### Hydra

[App page](https://appshunter.io/ios/app/hydra/id6783860342)

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

**In-app purchases:** none


## Frequently asked questions

### Is Water Reminder free?

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

### Is Hydra free?

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

### Do Water Reminder or Hydra have ads?

Neither Water Reminder nor Hydra 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.*