# Kilo vs 워터리움

The clearest difference is device support: 워터리움 at 3 against Kilo's 1. 워터리움 also leads on iOS requirement (15.1 vs 26.1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Kilo ships an update weekly, 워터리움 fortnightly. Both last shipped on October 9, 2026.

## The numbers

| Metric | Kilo | 워터리움 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | — | Free |
| Size | 15 MB | 59 MB |
| Requires iOS | 26.1 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jinhyeong Kim](https://appshunter.io/developer/1845287283) | [HYEKYUNG MOON](https://appshunter.io/developer/1888183128) |

## What reviewers say

### Kilo

[App page](https://appshunter.io/ios/app/kilo/id6760478157)

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

**In-app purchases:** none


### 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 Kilo free?

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

### Is 워터리움 free?

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

### Do Kilo or 워터리움 have ads?

Neither Kilo nor 워터리움 shows ads.

### Which is updated more often, Kilo or 워터리움?

Kilo ships an update weekly, and 워터리움 fortnightly. Most recently, Kilo was updated on October 9, 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.*