# Hydria vs Caffeine Tracker

The clearest difference is device support: Hydria at 5 against Caffeine Tracker's 2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Hydria sells 4 in-app purchases, starting at $4.99 per 7 days and Caffeine Tracker sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Hydria | Caffeine Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 15 MB | 79 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, Mac, Apple Watch, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [HUGO ANATOLE PAUL MORICEAU](https://appshunter.io/developer/1845368412) | [EMIR YAVCIN](https://appshunter.io/developer/1887524872) |

## What reviewers say

### 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 |


### Caffeine Tracker

[App page](https://appshunter.io/ios/app/caffeine-tracker-coffy/id6795906868)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $3.99 | per 7 days |
| Premium Yearly | $24.99 | per year |
| Lifetime Premium | $39.99 | one-time |


## Frequently asked questions

### Is Hydria free?

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

### Is Caffeine Tracker free?

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

### Do Hydria or Caffeine Tracker have ads?

Neither Hydria nor Caffeine Tracker shows ads.

### Which is updated more often, Hydria or Caffeine Tracker?

Hydria ships an update weekly, and Caffeine Tracker weekly. Most recently, Hydria was updated on October 12, 2026 and Caffeine Tracker on September 30, 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.*