# 小鱼短信 vs claustra

The clearest difference is update cadence: claustra at every 4 days against 小鱼短信's monthly. 小鱼短信's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 小鱼短信 sells 3 in-app purchases, starting at $0.99 per month and claustra sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

小鱼短信 ships an update monthly, claustra every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 小鱼短信 | claustra |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (31 ratings)](https://appshunter.io/ios/app/id1515035333/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Size | 10 MB | 40 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [佳 叶](https://appshunter.io/developer/1465134582) | [晗 林](https://appshunter.io/developer/1768801333) |

## What reviewers say

### 小鱼短信

[App page](https://appshunter.io/ios/app/id1515035333)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 包月会员 | $0.99 | per month |
| 包年会员 | $1.99 | per year |
| 永久会员 | $2.99 | one-time |


### claustra

[App page](https://appshunter.io/ios/app/claustra/id6760296074)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Claustra Premium Monthly | $0.99 | per month |
| Claustra Premium Yearly | $9.99 | per year |
| Claustra Premium Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is 小鱼短信 free?

小鱼短信 is free to download, with in-app purchases available.

### Is claustra free?

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

### Do 小鱼短信 or claustra have ads?

Neither 小鱼短信 nor claustra shows ads.

### Which is updated more often, 小鱼短信 or claustra?

小鱼短信 ships an update monthly, and claustra every 4 days. Most recently, 小鱼短信 was updated on November 3, 2026 and claustra on October 31, 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.*