# Casey AI vs Hydration Tracker

The clearest difference is in-app purchases: Casey AI at none against Hydration Tracker's 5. Casey AI also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. Hydration Tracker sells 5 in-app purchases, starting at $1.49 per 7 days. Casey AI asks for nothing beyond the download.

Casey AI ships an update every 11 days, Hydration Tracker weekly. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Casey AI | Hydration Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (25 ratings)](https://appshunter.io/ios/app/hydration-tracker-liquid-cats/id6744845359/reviews)** |
| Number of ratings | — | **25** |
| Positive reviews | — | 87.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 221 MB | 30 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [EnableYou](https://appshunter.io/developer/1796575797) | [Nikita Zhukov](https://appshunter.io/developer/974791842) |

## What reviewers say

### Casey AI

[App page](https://appshunter.io/ios/app/casey-ai/id6742052831)

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

**In-app purchases:** none


### Hydration Tracker

[App page](https://appshunter.io/ios/app/hydration-tracker-liquid-cats/id6744845359)

This gamified hydration tracker helps you build a healthy habit of drinking water regularly. It offers smart reminders, customizable goals based on your profile, and a collection of fun cat characters to keep you motivated. Track various beverages and view your progress with detailed logs and statistics.

**Highlights:** Gamified hydration tracking, Smart daily water reminders, Customizable goal calculator, Collection of cat characters, Log of 38 popular beverages, Detailed history and stats, Ad-free experience

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.49 | per 7 days |
| Monthly | $2.99 | per month |
| Annual | $8.99 | per year |
| Cats friend | Free | one-time |
| Lifetime | $17.99 | one-time |


## Frequently asked questions

### Is Casey AI free?

Casey AI 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 Casey AI or Hydration Tracker have ads?

Hydration Tracker shows ads; Casey AI does not.

### Which is updated more often, Casey AI or Hydration Tracker?

Casey AI ships an update every 11 days, and Hydration Tracker weekly. Most recently, Casey AI was updated on October 11, 2026 and Hydration Tracker on October 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.*