# ZeroIM vs 小黑蛇

The clearest difference is in-app purchases: ZeroIM at none against 小黑蛇's 10. ZeroIM also leads on iOS requirement (13.0 vs 15.5). 小黑蛇's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. 小黑蛇 sells 10 one-off in-app purchases. ZeroIM asks for nothing beyond the download.

ZeroIM ships an update every 5 days, 小黑蛇 every 6 days. Both last shipped on October 16, 2026.

## The numbers

| Metric | ZeroIM | 小黑蛇 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/id6781502199/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 88.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 6 days |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 169 MB | 198 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [山东企语网络科技有限公司](https://appshunter.io/developer/1895730910) | [Guangzhou Little Black Snake Network Technology Co., Ltd.](https://appshunter.io/developer/6781502201) |

## What reviewers say

### ZeroIM

[App page](https://appshunter.io/ios/app/zeroim/id6764590685)

This app provides a secure and efficient platform for internal enterprise communication and collaboration. It supports various message types, high-definition audio/video calls, group management, and organizational structure features. It also offers a social feed for sharing updates and ensures data security with encryption.

**Highlights:** Instant messaging (text, voice, image, video, file), HD audio/video calls, Group chat and management, Organizational structure and employee management, Social feed for sharing updates, End-to-end encryption, Cross-device synchronization

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

**In-app purchases:** none


### 小黑蛇

[App page](https://appshunter.io/ios/app/id6781502199)

This secure communication tool offers end-to-end encryption for all messages, calls, and files, ensuring only participants can view content. It features private chat options, hidden conversations, and encrypted community spaces for sharing life moments without privacy concerns. The app prioritizes user anonymity and minimal data collection for enhanced online identity protection.

**Highlights:** End-to-end encryption for all communications, Hidden conversations and privacy notifications, Encrypted community spaces for private sharing, Anonymous account support, Minimal personal information collection, Voice and video call encryption

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50黑蛇币 | $6.99 | one-time |
| 黑钻会员1个月 | $29.99 | one-time |
| 198黑蛇币 | $29.99 | one-time |
| 398黑蛇币 | $59.99 | one-time |
| 588黑蛇币 | $79.99 | one-time |
| 黑钻会员3个月 | $99.99 | one-time |
| 1098黑蛇币 | $149.99 | one-time |
| 黑钻会员6个月 | $179.99 | one-time |
| 黑钻会员12个月 | $349.99 | one-time |
| 5098黑蛇币 | $699.99 | one-time |


## Frequently asked questions

### Is ZeroIM free?

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

### Is 小黑蛇 free?

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

### Do ZeroIM or 小黑蛇 have ads?

ZeroIM shows ads; 小黑蛇 does not.

### Which is updated more often, ZeroIM or 小黑蛇?

ZeroIM ships an update every 5 days, and 小黑蛇 every 6 days. Most recently, ZeroIM was updated on October 16, 2026 and 小黑蛇 on October 16, 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.*