# 深海8000 vs (EXTENDS)Tank

The clearest difference is in-app purchases: (EXTENDS)Tank at none against 深海8000's 7. (EXTENDS)Tank also leads on update cadence (every 2 days vs every 11 days) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. 深海8000 sells 7 one-off in-app purchases. (EXTENDS)Tank asks for nothing beyond the download.

深海8000 ships an update every 11 days, (EXTENDS)Tank every 2 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 深海8000 | (EXTENDS)Tank |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 11 days | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 71 MB | 251 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Riki Kamei](https://appshunter.io/developer/1884951857) | [Lancia kitabatake](https://appshunter.io/developer/1852975591) |

## What reviewers say

### 深海8000

[App page](https://appshunter.io/ios/app/8000/id6816334134)

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 資金チャージ | $1.99 | one-time |
| 初心者探索パック | $2.99 | one-time |
| 留守中収入2倍 | $2.99 | one-time |
| 水族館応援パック | $3.99 | one-time |
| 広告スキップ | $3.99 | one-time |
| 来館収入2倍 | $3.99 | one-time |
| 探索スタートセット | $4.99 | one-time |


### (EXTENDS)Tank

[App page](https://appshunter.io/ios/app/extendstank/id6818545961)

Raise freshwater and saltwater fish in your own aquarium. Feed them, watch them grow in real-time, and decorate their tanks with various items. Earn points through daily logins and missions to purchase new fish, food, and decorations.

**Highlights:** Raise freshwater and saltwater fish, Real-time fish growth, Customize aquarium layouts, Earn points for in-game items, Sync with fishing tournament app, Clean and maintain tanks

**In-app purchases:** none


## Frequently asked questions

### Is 深海8000 free?

深海8000 is free to download, with in-app purchases available.

### Is (EXTENDS)Tank free?

(EXTENDS)Tank is free to download, with no in-app purchases.

### Do 深海8000 or (EXTENDS)Tank have ads?

Both 深海8000 and (EXTENDS)Tank show ads.

### Which is updated more often, 深海8000 or (EXTENDS)Tank?

深海8000 ships an update every 11 days, and (EXTENDS)Tank every 2 days. Most recently, 深海8000 was updated on October 29, 2026 and (EXTENDS)Tank on October 30, 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.*