# 用中电子档案 vs TailScope

The clearest difference is in-app purchases: 用中电子档案 at none against TailScope's 1. 用中电子档案 also leads on iOS requirement (11.0 vs 17.0). TailScope's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. TailScope sells 1 one-off in-app purchase. 用中电子档案 asks for nothing beyond the download.

用中电子档案 ships an update every 2 months, TailScope every 3 weeks. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 用中电子档案 | TailScope |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/id1311332344/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 58 MB | 8 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [远大空调有限公司](https://appshunter.io/developer/1311332343) | [Shanghai Fengcong Technology Co., Ltd.](https://appshunter.io/developer/1640023165) |

## What reviewers say

### 用中电子档案

[App page](https://appshunter.io/ios/app/id1311332344)

**Features:** macOS Compatibility

**In-app purchases:** none


### TailScope

[App page](https://appshunter.io/ios/app/tailscope/id6802478511)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TailScope Pro Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is 用中电子档案 free?

用中电子档案 is free to download, with no in-app purchases.

### Is TailScope free?

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

### Do 用中电子档案 or TailScope have ads?

Neither 用中电子档案 nor TailScope shows ads.

### Which is updated more often, 用中电子档案 or TailScope?

用中电子档案 ships an update every 2 months, and TailScope every 3 weeks. Most recently, 用中电子档案 was updated on November 4, 2026 and TailScope on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*