# 中信傳書 vs 3927

The clearest difference is review sentiment: 3927 at 100% against 中信傳書's 90%. 中信傳書's advantage is iOS requirement (9.0 vs 11.0). On price, update cadence, 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.

中信傳書 ships an update every 2 months, 3927 every 6 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 中信傳書 | 3927 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id410018693/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 90.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 4 MB | 238 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [GRACEAPPS.COM](https://appshunter.io/developer/407526731) | [PhraKhamphee](https://appshunter.io/developer/1711138401) |

## What reviewers say

### 中信傳書

[App page](https://appshunter.io/ios/app/id410018693)

**In-app purchases:** none


### 3927

[App page](https://appshunter.io/ios/app/3927/id1616462747)

A platform for indexing and quickly retrieving information using reference numbers. Users can input a data identifier to access specific details.

**Highlights:** Data indexing platform, Quick information retrieval, Input data reference numbers, View specific details

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

**In-app purchases:** none


## Frequently asked questions

### Is 中信傳書 free?

中信傳書 is free to download, with no in-app purchases.

### Is 3927 free?

3927 is free to download, with no in-app purchases.

### Do 中信傳書 or 3927 have ads?

Neither 中信傳書 nor 3927 shows ads.

### Which is updated more often, 中信傳書 or 3927?

中信傳書 ships an update every 2 months, and 3927 every 6 weeks. Most recently, 中信傳書 was updated on November 1, 2026 and 3927 on November 3, 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.*