# 海水驿站 vs JonGrow

The clearest difference is in-app purchases: JonGrow at none against 海水驿站's 4. JonGrow also leads on ads (none vs shown). 海水驿站's advantage is update cadence (weekly vs fortnightly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 海水驿站 sells 4 in-app purchases, starting at $28.99 per 6 months. JonGrow asks for nothing beyond the download.

海水驿站 ships an update weekly, JonGrow fortnightly. The most recent releases landed on October 18, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | 海水驿站 | JonGrow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/id922497742/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 52.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free with in-app purchases | — |
| Size | 97 MB | 11 MB |
| Requires iOS | **17** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 9+ |
| Developer | [兆辉 马](https://appshunter.io/developer/667445063) | [PuffinStudio](https://appshunter.io/developer/1768487904) |

## What reviewers say

### 海水驿站

[App page](https://appshunter.io/ios/app/id922497742)

This app helps saltwater aquarium enthusiasts manage their tanks with smart water quality tracking, expert guides, and a community forum. It offers detailed creature databases and task management to simplify aquarium care.

**Highlights:** Smart water quality management, Expert aquarium setup guides, Original saltwater feeding strategies, Saltwater creature database, Community forum for enthusiasts, Task management for aquariums

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 半年会员 | $28.99 | per 6 months |
| 1 year premium member | $29.99 | per year |
| 1 month premium member | $29.99 | per month |
| 打赏站长一杯咖啡 | $4.99 | one-time |


### JonGrow

[App page](https://appshunter.io/ios/app/jongrow/id6761350534)

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

**In-app purchases:** none


## Frequently asked questions

### Is 海水驿站 free?

海水驿站 is free to download, with in-app purchases available.

### Is JonGrow free?

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

### Do 海水驿站 or JonGrow have ads?

海水驿站 shows ads; JonGrow does not.

### Which is updated more often, 海水驿站 or JonGrow?

海水驿站 ships an update weekly, and JonGrow fortnightly. Most recently, 海水驿站 was updated on October 18, 2026 and JonGrow on October 12, 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.*