# Dehydrate vs Hydration Tracker

The clearest difference is in-app purchases: Dehydrate at none against Hydration Tracker's 2. Hydration Tracker's advantage is update cadence (every 3 weeks vs every 16 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Hydration Tracker sells 2 in-app purchases, starting at $3.99 per month. Dehydrate asks for nothing beyond the download.

Dehydrate ships an update every 16 months, Hydration Tracker every 3 weeks. The most recent releases landed on September 22, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Dehydrate | Hydration Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 weeks** |
| Size | 4 MB | 20 MB |
| Requires iOS | 18.2 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nico Liu](https://appshunter.io/developer/1080122034) | [Venish Rakholia](https://appshunter.io/developer/1873513119) |

## What reviewers say

### Dehydrate

[App page](https://appshunter.io/ios/app/dehydrate/id6743676923)

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

**In-app purchases:** none


### Hydration Tracker

[App page](https://appshunter.io/ios/app/hydration-tracker-water-intake/id6767115954)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $3.99 | per month |
| Yearly Premium | $9.99 | per year |


## Frequently asked questions

### Is Dehydrate free?

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

### Is Hydration Tracker free?

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

### Do Dehydrate or Hydration Tracker have ads?

Neither Dehydrate nor Hydration Tracker shows ads.

### Which is updated more often, Dehydrate or Hydration Tracker?

Dehydrate ships an update every 16 months, and Hydration Tracker every 3 weeks. Most recently, Dehydrate was updated on September 22, 2026 and Hydration Tracker on September 13, 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.*