# Hydralert vs Water Requirement

The clearest difference is in-app purchases: Water Requirement at none against Hydralert's 3. Hydralert's advantage is ads (none vs shown) and update cadence (every 2 days vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Hydralert sells 3 in-app purchases, starting at $2.99 per month. Water Requirement asks for nothing beyond the download.

Hydralert ships an update every 2 days, Water Requirement every 4 months. The most recent releases landed on October 8, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Hydralert | Water Requirement |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hydralert/id6468425578/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 4 months |
| Monetization | Freemium | — |
| Size | 69 MB | 17 MB |
| Requires iOS | 17.0 | **16.2** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [Colby Mehmen](https://appshunter.io/developer/1615430352) | [Yuta Endo](https://appshunter.io/developer/1621719139) |

## What reviewers say

### Hydralert

[App page](https://appshunter.io/ios/app/hydralert/id6468425578)

Easily track your fluid intake, including water, caffeine, and alcohol, to maintain optimal hydration. Set personalized goals and gain insights into your hydration patterns with user-friendly analytics. Achieve your daily hydration targets with this intuitive health companion.

**Highlights:** Hydration tracking, Caffeine and alcohol monitoring, Customizable hydration goals, Insightful hydration analytics, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annually | $9.99 | per year |
| Lifetime Access | $14.99 | one-time |


### Water Requirement

[App page](https://appshunter.io/ios/app/water-requirement/id6502707566)

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

**In-app purchases:** none


## Frequently asked questions

### Is Hydralert free?

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

### Is Water Requirement free?

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

### Do Hydralert or Water Requirement have ads?

Water Requirement shows ads; Hydralert does not.

### Which is updated more often, Hydralert or Water Requirement?

Hydralert ships an update every 2 days, and Water Requirement every 4 months. Most recently, Hydralert was updated on October 8, 2026 and Water Requirement on October 27, 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.*