# 53Hz vs 树洞有只猫

The clearest difference is review sentiment: 53Hz at 100% against 树洞有只猫's 50%. 53Hz also leads on rating (3.8 vs 1.0) and update cadence (every 2 days vs every 5 days). 树洞有只猫's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 53Hz sells 4 in-app purchases, starting at $1.99 per month and 树洞有只猫 sells 9 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

53Hz holds the better App Store score, 3.8 against 1.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively. Written reviews point the same way: 100% of 53Hz's written reviews are positive against 50% of 树洞有只猫's.

53Hz ships an update every 2 days, 树洞有只猫 every 5 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 53Hz | 树洞有只猫 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (4 ratings)](https://appshunter.io/ios/app/53hz/id6756495021/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/id6762756366/reviews) |
| Number of ratings | **4** | 1 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 5 days |
| Monetization | Freemium | Freemium |
| Size | 198 MB | 31 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Haoqiang Chai](https://appshunter.io/developer/1163486933) | [Chengdu Baibai Maomao Technology Co., Ltd.](https://appshunter.io/developer/1887172471) |

## What reviewers say

### 53Hz

[App page](https://appshunter.io/ios/app/53hz/id6756495021)

Express your current thoughts and connect with others through algorithmically matched anonymous content. Unlock identities and start conversations only after mutual interest is shown, prioritizing genuine expression over popularity metrics.

**Highlights:** Publish dynamic thoughts, Content-based matching, Receive 6 matched recommendations, Anonymous browsing, Unlock identity upon mutual interest, Private chat space

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO 包月续费 | $1.99 | per month |
| 加油包 | $0.99 | one-time |
| PRO 月费 | $2.99 | one-time |
| PRO 年包 | $6.99 | one-time |


### 树洞有只猫

[App page](https://appshunter.io/ios/app/id6762756366)

An anonymous social app where users share thoughts and feelings like messages in a bottle. Connect with strangers through text, images, or voice, and build friendships without revealing identities. Offers a safe space for emotional expression and discovery.

**Highlights:** Anonymous emotional sharing, Message in a bottle style communication, One-on-one private chats, Ephemeral image sharing, Voice message option, Blocking and reporting system

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度会员 | $4.99 | per month |
| 季度会员 | $14.99 | per 3 months |
| 年度会员 | $49.99 | per year |
| 60积分 | $0.99 | one-time |
| 180积分 | $2.99 | one-time |
| 280积分 | $3.99 | one-time |
| 1580积分 | $19.99 | one-time |
| 2280积分 | $24.99 | one-time |
| 4280积分 | $39.99 | one-time |


## Frequently asked questions

### Is 53Hz free?

53Hz is free to download, with in-app purchases available.

### Is 树洞有只猫 free?

树洞有只猫 is free to download, with in-app purchases available.

### Which has better reviews, 53Hz or 树洞有只猫?

53Hz is rated higher. 53Hz averages 3.8 out of 5 from 4 ratings, while 树洞有只猫 averages 1.0 from 1 ratings.

### Do 53Hz or 树洞有只猫 have ads?

Neither 53Hz nor 树洞有只猫 shows ads.

### Which is updated more often, 53Hz or 树洞有只猫?

53Hz ships an update every 2 days, and 树洞有只猫 every 5 days. Most recently, 53Hz was updated on October 28, 2026 and 树洞有只猫 on October 24, 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.*