# 龟友天下 vs 水族圈

The clearest difference is update cadence: 水族圈 at weekly against 龟友天下's every 9 months. 龟友天下's advantage is iOS requirement (9.0 vs 12.0). On price, ads, in-app purchases and device support there is nothing between them.

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

龟友天下 ships an update every 9 months, 水族圈 weekly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 龟友天下 | 水族圈 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Weekly** |
| Size | 94 MB | 63 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 9+ |
| Developer | [金星 吴](https://appshunter.io/developer/986232893) | [大伦 王](https://appshunter.io/developer/1452981396) |

## What reviewers say

### 龟友天下

[App page](https://appshunter.io/ios/app/id792630751)

**Features:** macOS Compatibility

**In-app purchases:** none


### 水族圈

[App page](https://appshunter.io/ios/app/id6468041012)

**In-app purchases:** none


## Frequently asked questions

### Is 龟友天下 free?

龟友天下 is free to download, with no in-app purchases.

### Is 水族圈 free?

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

### Do 龟友天下 or 水族圈 have ads?

Neither 龟友天下 nor 水族圈 shows ads.

### Which is updated more often, 龟友天下 or 水族圈?

龟友天下 ships an update every 9 months, and 水族圈 weekly. Most recently, 龟友天下 was updated on November 1, 2026 and 水族圈 on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*