# 禾美环保 vs Cat Voice Library

The clearest difference is in-app purchases: 禾美环保 at none against Cat Voice Library's 4. Cat Voice Library's advantage is update cadence (every 4 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Cat Voice Library sells 2 one-off in-app purchases. 禾美环保 asks for nothing beyond the download.

禾美环保 ships an update every 3 weeks, Cat Voice Library every 4 days. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 禾美环保 | Cat Voice Library |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.6 (5 ratings)](https://appshunter.io/ios/app/cat-voice-library/id6741472565/reviews)** |
| Number of ratings | — | **5** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 83 MB | 45 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [禾美环保集团有限公司](https://appshunter.io/developer/1610487832) | [Shanghai Rutang Internet Technology Co., Ltd.](https://appshunter.io/developer/1198120052) |

## What reviewers say

### 禾美环保

[App page](https://appshunter.io/ios/app/id1663099276)

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

**In-app purchases:** none


### Cat Voice Library

[App page](https://appshunter.io/ios/app/cat-voice-library/id6741472565)

This utility app simulates various cat vocalizations to interact with felines. It includes a knowledge base on cat communication and can be used to test a cat's reaction to different sounds. Engage with your pets or attract strays with a variety of meows.

**Highlights:** Cat sound simulation, Attract stray cats, Soothe stressed pets, Cat reaction testing, Cat raising knowledge base, Variety of cat vocalizations

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| unlock all voices | $0.99 | one-time |
| Donate One Dollar for Cat Food | $0.99 | one-time |


## Frequently asked questions

### Is 禾美环保 free?

禾美环保 is free to download, with no in-app purchases.

### Is Cat Voice Library free?

Cat Voice Library is free to download, with in-app purchases available.

### Do 禾美环保 or Cat Voice Library have ads?

Neither 禾美环保 nor Cat Voice Library shows ads.

### Which is updated more often, 禾美环保 or Cat Voice Library?

禾美环保 ships an update every 3 weeks, and Cat Voice Library every 4 days. Most recently, 禾美环保 was updated on November 3, 2026 and Cat Voice Library on November 4, 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.*