# Hydration Tracker vs Soda & Caffeine Tracker GULP

The clearest difference is price: Hydration Tracker at Free against Soda & Caffeine Tracker GULP's $1.99. Hydration Tracker also leads on update cadence (every 9 days vs every 3 weeks). Soda & Caffeine Tracker GULP's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Hydration Tracker is free to download; Soda & Caffeine Tracker GULP costs $1.99 up front. Hydration Tracker sells 5 in-app purchases, starting at $1.49 per 7 days and Soda & Caffeine Tracker GULP sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Hydration Tracker ships an update every 9 days, Soda & Caffeine Tracker GULP every 3 weeks. The most recent releases landed on October 25, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Hydration Tracker | Soda & Caffeine Tracker GULP |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.8 (26 ratings)](https://appshunter.io/ios/app/hydration-tracker-liquid-cats/id6744845359/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 34 MB | 10 MB |
| Requires iOS | **18.0** | 18.6 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Nikita Zhukov](https://appshunter.io/developer/974791842) | [Aneesh Pradeep](https://appshunter.io/developer/1836157821) |

## What reviewers say

### 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

**Features:** Apple Watch app

**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 |


### Soda & Caffeine Tracker GULP

[App page](https://appshunter.io/ios/app/soda-and-caffeine-tracker-gulp/id6784381787)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GULP Pro Monthly | $2.99 | per month |
| GULP Pro Annual | $14.99 | per year |
| GULP Pro Lifetime | $34.99 | one-time |


## Frequently asked questions

### Is Hydration Tracker free?

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

### Is Soda & Caffeine Tracker GULP free?

Soda & Caffeine Tracker GULP costs $1.99, and also offers in-app purchases.

### Do Hydration Tracker or Soda & Caffeine Tracker GULP have ads?

Hydration Tracker shows ads; Soda & Caffeine Tracker GULP does not.

### Which is updated more often, Hydration Tracker or Soda & Caffeine Tracker GULP?

Hydration Tracker ships an update every 9 days, and Soda & Caffeine Tracker GULP every 3 weeks. Most recently, Hydration Tracker was updated on October 25, 2026 and Soda & Caffeine Tracker GULP on October 5, 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.*