# 小D协同 vs 必信

The clearest difference is review sentiment: 必信 at 100% against 小D协同's 9%. 必信 also leads on rating (4.5 vs 1.0) and update cadence (weekly vs fortnightly). 小D协同's advantage is monetization model (free vs free with in-app purchases). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

必信 holds the better App Store score, 4.5 against 1.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 9% of 小D协同's written reviews are positive against 100% of 必信's.

小D协同 ships an update fortnightly, 必信 weekly. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | 小D协同 | 必信 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/d/id1477016748/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/id1588247600/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 8.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 95 MB | 113 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Dongbao Information Technology Co.,Ltd](https://appshunter.io/developer/530829055) | [Bixin Technology Limited](https://appshunter.io/developer/1893353813) |

## What reviewers say

### 小D协同

[App page](https://appshunter.io/ios/app/d/id1477016748)

This app facilitates employee management with features for submitting and approving various leave requests, tracking work hours, and mobile clock-in/out. It also provides access to daily and monthly work reports, salary information, and timely notifications for important tasks.

**Highlights:** Leave request submission (sick, business trip, overtime), Document approval with delegation, Work hour and salary reporting, Mobile clock-in/out (Bluetooth, GPS, Wi-Fi), Push notifications for tasks, Password management and app sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### 必信

[App page](https://appshunter.io/ios/app/id1588247600)

A social networking app focused on knowledge exchange and community building. It offers a platform for users to connect, share in a "friend circle," and access premium features like unique member IDs.

**Highlights:** Knowledge exchange focus, Community "friend circle", Premium member ID feature, Friendly communication platform

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

**In-app purchases:** none


## Frequently asked questions

### Is 小D协同 free?

小D协同 is free to download, with no in-app purchases.

### Is 必信 free?

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

### Which has better reviews, 小D协同 or 必信?

必信 is rated higher. 小D协同 averages 1.0 out of 5 from 1 ratings, while 必信 averages 4.5 from 2 ratings.

### Do 小D协同 or 必信 have ads?

Neither 小D协同 nor 必信 shows ads.

### Which is updated more often, 小D协同 or 必信?

小D协同 ships an update fortnightly, and 必信 weekly. Most recently, 小D协同 was updated on October 26, 2026 and 必信 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.*