# OneChat vs 事密达IM

The clearest difference is rating: OneChat at 4.4 against 事密达IM's 3.7. OneChat also leads on in-app purchases (none vs 3) and update cadence (fortnightly vs monthly). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. 事密达IM sells 3 one-off in-app purchases. OneChat asks for nothing beyond the download.

OneChat holds the better App Store score, 4.4 against 3.7. Both are backed by a comparable volume of ratings — 7 and 6 respectively.

OneChat ships an update fortnightly, 事密达IM monthly. The most recent releases landed on September 19, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | OneChat | 事密达IM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/onechat/id6449586484/reviews)** | [3.7 (6 ratings)](https://appshunter.io/ios/app/im/id6462860670/reviews) |
| Number of ratings | **7** | 6 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 194 MB | 175 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [OPC](https://appshunter.io/developer/1689725241) | [广州集梦网络科技有限公司](https://appshunter.io/developer/1662413456) |

## What reviewers say

### OneChat

[App page](https://appshunter.io/ios/app/onechat/id6449586484)

This free messaging app allows for quick text and media sharing, along with high-quality voice and video calls. It prioritizes stable, reliable communication with a focus on user privacy through end-to-end encryption.

**Highlights:** Text and media sharing, Voice and video calls, Stable and reliable communication, Intuitive interface, End-to-end encryption, Data synchronization

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

**In-app purchases:** none


### 事密达IM

[App page](https://appshunter.io/ios/app/im/id6462860670)

Record high-quality audio and video with AI noise reduction for clear sound. This app offers fun voice-changing effects for recordings and allows easy saving and sharing of past audio and video files.

**Highlights:** High-quality audio/video recording, AI noise reduction, Multiple voice-changing effects, Save and share recordings, Clear and bright audio quality

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1个月vip | $9.99 | one-time |
| 3个月vip | $29.99 | one-time |
| 6个月vip | $59.99 | one-time |


## Frequently asked questions

### Is OneChat free?

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

### Is 事密达IM free?

事密达IM is free to download, with in-app purchases available.

### Which has better reviews, OneChat or 事密达IM?

OneChat is rated higher. OneChat averages 4.4 out of 5 from 7 ratings, while 事密达IM averages 3.7 from 6 ratings.

### Do OneChat or 事密达IM have ads?

Neither OneChat nor 事密达IM shows ads.

### Which is updated more often, OneChat or 事密达IM?

OneChat ships an update fortnightly, and 事密达IM monthly. Most recently, OneChat was updated on September 19, 2026 and 事密达IM on September 5, 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.*