# Underwater Idle Simulator — Build & grow your fish empire

> Build & grow your fish empire (iPhone/iPad app by Brightika, Inc..)

- Source: https://appshunter.io/ios/app/underwater-idle-simulator/id6820427450 (this page in markdown: same URL + `.md`)
- Developer: [Brightika, Inc.](https://appshunter.io/developer/1545142276)
- Category: Games, Simulation, Strategy
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 221 MB
- Languages: American English
- Released: 2026-11-04
- Data updated: 2026-11-10

## What is Underwater Idle Simulator?

Dive into a relaxing underwater simulation where you build and manage your own aquarium empire. This chill idle aquarium game lets you grow from a small tank into a full ocean world filled with unique sea life.

Start simple and expand your aquarium simulator step by step. Unlock new fish, upgrade habitats, and attract visitors in a smooth idle simulation experience designed for casual play and steady progress.

Your aquarium keeps earning even when you're offline — a true idle tycoon experience where growth never stops. If you enjoy cozy management games, this underwater game is all about relaxing progression and smart upgrades.

• Build and expand your aquarium simulator 
• Discover rare fish in a living underwater simulation 
• Earn passive income in an idle aquarium game 
• Upgrade habitats and grow your aquarium tycoon empire
• Enjoy offline progress in a relaxing simulation game 

Create your own vibrant ocean world and watch it evolve. This idle simulator combines strategy, collection, and calm gameplay into a satisfying underwater simulation experience you can enjoy anytime.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Starter Pack | $4.99 | one-time |
| VIP Pack | $11.99 | one-time |
| Exclusive Pack | $6.99 | one-time |
| 200 Rubies | $1.99 | one-time |
| 330 Rubies | $2.99 | one-time |
| Kraken's Haul Pack+ | $19.99 | one-time |
| 1200 Rubies | $9.99 | one-time |
| 2500 Rubies | $19.99 | one-time |


## Is Underwater Idle Simulator safe?

Not enough ratings yet to assess Underwater Idle Simulator.

## Is Underwater Idle Simulator legit?

Underwater Idle Simulator appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Underwater Idle Simulator is 75 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.2.5 — 2026-11-04

No release notes.

## More apps by Brightika, Inc.

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- [Differences Online—Find Games](https://appshunter.io/ios/app/differences-onlinefind-games/id1499112966)
- [Can You Spot It－5 Differences](https://appshunter.io/ios/app/can-you-spot-it5-differences/id1499114408)
- [Dice Battle: Tower Defense](https://appshunter.io/ios/app/dice-battle-tower-defense/id1507070387)

All apps by Brightika, Inc.: https://appshunter.io/developer/1545142276

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-10.*