# Water Tracker vs 워터리움

The clearest difference is in-app purchases: 워터리움 at none against Water Tracker's 3. 워터리움 also leads on iOS requirement (15.1 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Water Tracker sells 3 in-app purchases, starting at $1.99 per month. 워터리움 asks for nothing beyond the download.

Water Tracker ships an update every 9 days, 워터리움 fortnightly. The most recent releases landed on October 19, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Water Tracker | 워터리움 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Monetization | — | Free |
| Size | 90 MB | 59 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Federico Trevisani](https://appshunter.io/developer/1890300706) | [HYEKYUNG MOON](https://appshunter.io/developer/1888183128) |

## What reviewers say

### Water Tracker

[App page](https://appshunter.io/ios/app/water-tracker-idroflow/id6763654290)

**Features:** Family Sharing, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IdroFlow Plus | $1.99 | per month |
| IdroFlow Plus (Annual) | $7.99 | per year |
| IdroFlow Plus (Lifetime) | $19.99 | one-time |


### 워터리움

[App page](https://appshunter.io/ios/app/id6789337096)

This app combines water drinking habit tracking with a virtual aquarium. Log your water intake to fill your aquarium, hatch eggs with pearls, and collect unique fish to create a personalized underwater world. Stay hydrated with cute reminders and enjoy mini-games while building a healthy habit.

**Highlights:** Log water intake to fill aquarium, Hatch eggs with pearls to collect fish, Decorate and feed fish, Aquarium grows with consistent use, Monthly habit calendar and streak tracking, Water drinking reminders, Mini-games and hidden events

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

**In-app purchases:** none


## Frequently asked questions

### Is Water Tracker free?

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

### Is 워터리움 free?

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

### Do Water Tracker or 워터리움 have ads?

Neither Water Tracker nor 워터리움 shows ads.

### Which is updated more often, Water Tracker or 워터리움?

Water Tracker ships an update every 9 days, and 워터리움 fortnightly. Most recently, Water Tracker was updated on October 19, 2026 and 워터리움 on October 9, 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.*