# Idle Aquarium: Fish Tank Zoo — Build and upgrade an aquarium!

> Idle aquarium simulation game with fish collection and business management. (iPhone/iPad app by Playstack Ltd.)

- Source: https://appshunter.io/ios/app/idle-aquarium-fish-tank-zoo/id1571262449 (this page in markdown: same URL + `.md`)
- Developer: [Playstack Ltd](https://appshunter.io/developer/1133080356)
- Category: Games, Simulation, Strategy
- Price: Free with in-app purchases
- Rating: 4.80/5 from 5,056 App Store ratings · 207 written reviews indexed
- Age rating: 4+
- Requires: iOS 10.0 · 311 MB
- Languages: American English, European Spanish, Korean, German (Germany), French (France), Japanese
- Released: 2021-09-11
- Data updated: 2026-09-03
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/idle-aquarium-fish-tank-zoo/id1571262449/reviews.md

## What is Idle Aquarium?

Welcome to Idle Aquarium! Build a fin-tastic aquarium brimming with aquatic life and reel in the money!

• Start small
Start with a small exhibit where visitors can see the fish in your collection and use their donations to improve your aquarium!

• Attract guests
Decorate and improve your reception in order to attract more customers and keep them happy through aquatic research and happy marine life. More visitors means more donations for your aquarium!

• Collect fish
Sail away to discover new fish species that you can include in your aquarium exhibits and bring in rarer and legendary fish... is that a Kraken?!

• Upgrade tanks
Buy new fish tanks and improve the existing ones so that you can accommodate even more fish. Adding tank decoration or information stands will make customers even happier, which will translate into more donations!

• Expand
Upgrade your gift shop by adding new sale items or improving the existing ones. You can also add other exhibits rooms to host other species such as otters, penguins or lobsters. Your customers will appreciate it and will spend more money!

Take your aquarium to the next level and become rich!

## Key features

- Build and upgrade aquarium exhibits
- Attract and keep guests happy
- Collect diverse fish species
- Upgrade tanks and facilities
- Expand with new exhibits and gift shop

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Small Gem Bundle | $1.99 | one-time |
| Gem Bundle | $4.99 | one-time |
| Bundle of small fish | $1.99 | one-time |
| Bundle of medium fish | $2.99 | one-time |
| Welcome Bundle | $8.99 | one-time |
| Basic Bundle | $4.99 | one-time |
| Master Bundle | $19.99 | one-time |
| Earnings Booster! | $2.99 | one-time |
| Remove Adverts | $9.99 | one-time |
| Super Earnings Booster! | $4.99 | one-time |
| Mega Earnings Booster! | $9.99 | one-time |


## What do users think of Idle Aquarium?

Overall sentiment: mixed

**Pros**

- 👍 Fun and addictive gameplay
- 🚀 Smooth performance and animations
- 💎 Cute and appealing aquarium design
- 🤑 Rewarding progression system

**Cons**

- 🔍 Limited content and short playtime
- 📺 Excessive use of ads
- 🔒 Issues with purchased content not carrying over
- 🐛 Bugs and glitches affecting gameplay

**Commonly reported bugs**

- Trawler feature not working as intended
- Purchased ad-removal not persisting across sessions
- Freezing and crashing issues

**Most requested features**

- More fish and aquarium types to unlock
- Ability to customize tanks and aquarium layout
- Offline progress and rewards
- Improved idle/passive income generation

## Recent user reviews (10 of 207)

All indexed reviews: https://appshunter.io/ios/app/idle-aquarium-fish-tank-zoo/id1571262449/reviews.md

### 5/5 — Wow

*2026-08-20, version 4.5*

This game is amazing but i think there should be more fish and more aquariums in different continents so there will be more variety and exclusive fish in some areas

### 3/5 — Cute but

*2026-08-20, version 4.5*

You can unlock everything in the game within 2 days and then there’s nothing to do. Very little customization, can’t even put all your fishes in tanks, not enough tanks to fill. There’s also no orca like in the thumbnail. Also loads of ads.

### 4/5 — It’s pretty fun but the adds

*2026-06-30, version 4.5*

I’ve bin playing this game for quit a bit and my only complaint is the adds that’s it

### 5/5 — Super jeux!

*2026-03-24*

Jeu assez calme qui demande pas de concentration folle, les graphismes sont tout mignons enfin bref franchement j’aime beaucoup

### 5/5 — Perfect Choice

*2026-01-19, version 4.5*

Cảm ơn vì đã giúp tôi yêu động vật và đại dương hơn

### 3/5 — Fun but short

*2026-01-06, version 4.5*

Enjoyed playing but was disappointed when I ran out of anything to do after a couple of hours.

### 5/5 — NICE

*2025-10-07, version 4.5*

NICE

### 3/5 — Review

*2025-09-25, version 4.5*

I find this game to be very entertaining.
Whilst I wait for money I can do other productive things.
I wish that there were less adds though, I’m sick of waiting for adds to finish or turning down offers.
The sailor says stuff very clear and I know what he means. 
Every thing is clearly labeled and things are good.
I wish that there were other ways to receive gems because I’m not going to spend money on this game.
Overall, I like this But I think it has room for some\a lot of room for improvement.

### 5/5 — Great game

*2025-09-13, version 4.5*

I have a great time playing this game

### 5/5 — Oh my god

*2025-07-26, version 4.5*

This is the best game no ads at all

## Frequently asked questions about Idle Aquarium

### What is Idle Aquarium: Fish Tank Zoo?

Idle Aquarium: Fish Tank Zoo is a simulation game where you build and manage your own aquarium. You start with a small exhibit and use visitor donations to expand, collect fish, upgrade tanks, and attract more guests to become rich.

### How do I attract more guests to my aquarium?

To attract more guests, you need to decorate and improve your reception area. Keeping your marine life happy through research and ensuring a good visitor experience will also encourage more people to visit and spend money.

### Can I collect different types of aquatic life?

Yes, you can sail away to discover and collect new fish species, including rare and legendary ones. The game also allows you to add other exhibits for species like otters, penguins, and lobsters.

### Is the game free to play?

The game is free to download and play. It includes advertisements and offers in-app purchases for players who wish to accelerate their progress or acquire special items.

### What are the main goals in Idle Aquarium?

The main goals are to build and upgrade your aquarium, collect a wide variety of fish and marine life, attract as many visitors as possible, and ultimately become a wealthy aquarium tycoon by maximizing donations and profits.

## Version history (last 5 releases)

### 4.5 — 2022-04-02

IAP bug fix.

### 4.4 — 2022-03-08

- Fish Diary is now added! Can you catch 'em all?
- Daily Rewards added
- New Player Feedback System! 
- FTUE changes
- Unlocking new zones
- Balancing Changes

### 4.3 — 2021-12-18

- Discover new games and offers via the billboard

### 4.2 — 2021-12-01

Expand your Aquarium like never before!

Added new Crustacean Zone
Added new Tentacle Zone
Added new Penguin Enclosure
Added new Otter Enclosure
Fixed camera issues 
Improved performance
Added localisation for French, German, Spanish, Korean and Japanese languages

### 4.1 — 2021-10-23

Bug fixes.

## Apps similar to Idle Aquarium

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Idle Fish 2: Fishing Tycoon](https://appshunter.io/ios/app/idle-fish-2-fishing-tycoon/id1534396279) | 4.8 (5,666) | Free | Games |
| [Zoo Craft - Animal Park Tycoon](https://appshunter.io/ios/app/zoo-craft-animal-park-tycoon/id1247409901) | 4.6 (7,158) | Free | Games |
| [Fish Tycoon 2 Virtual Aquarium](https://appshunter.io/ios/app/fish-tycoon-2-virtual-aquarium/id1194725957) | 4.2 (3,819) | Free | Games |
| [Idle Sea Park - Fish Tank Sim](https://appshunter.io/ios/app/idle-sea-park-fish-tank-sim/id1605972092) | 4.7 (923) | Free | Games |
| [Splash — Fish Aquarium](https://appshunter.io/ios/app/splash-fish-aquarium/id960080321) | 4.7 (6,345) | Free | Games |
| [Tap Tap Fish - AbyssRium](https://appshunter.io/ios/app/tap-tap-fish-abyssrium/id1068366937) | 4.5 (24,168) | Free | Games |

## More apps by Playstack Ltd

- [Snipers vs Thieves](https://appshunter.io/ios/app/snipers-vs-thieves/id1159723495)
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- [Tiny Armies](https://appshunter.io/ios/app/tiny-armies/id1301397567)
- [Mowy Lawn](https://appshunter.io/ios/app/mowy-lawn/id1324982051)
- [Ava Airborne](https://appshunter.io/ios/app/ava-airborne/id1327396071)
- [Survival City - Zombie Defence](https://appshunter.io/ios/app/survival-city-zombie-defence/id1365647361)

All apps by Playstack Ltd: https://appshunter.io/developer/1133080356

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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 2026-09-03.*