# 第四记 vs 电e盾

The clearest difference is update cadence: 第四记 at fortnightly against 电e盾's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

第四记 ships an update fortnightly, 电e盾 every 2 months. Both last shipped on October 2, 2026.

## The numbers

| Metric | 第四记 | 电e盾 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/id1571845119/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free | — |
| Size | 135 MB | 153 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GeoQuater Digital Earth (Beijing) Technology Co., Ltd.](https://appshunter.io/developer/1571845121) | [河北新大长远电力科技股份有限公司](https://appshunter.io/developer/1374042715) |

## What reviewers say

### 第四记

[App page](https://appshunter.io/ios/app/id1571845119)

This app is a field recording companion for outdoor workers, focusing on efficiency and data quality. It offers various map layers, easy point, line, and area recording, and essential field tools like distance measurement and a compass.

**Highlights:** Multiple map layers, Point, line, and area recording, Field measurement tools, Customizable field forms, Multi-device data synchronization, Track recording, Data import/export

**Features:** macOS Compatibility

**In-app purchases:** none


### 电e盾

[App page](https://appshunter.io/ios/app/e/id6445978566)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 第四记 free?

第四记 is free to download, with no in-app purchases.

### Is 电e盾 free?

电e盾 is free to download, with no in-app purchases.

### Do 第四记 or 电e盾 have ads?

Neither 第四记 nor 电e盾 shows ads.

### Which is updated more often, 第四记 or 电e盾?

第四记 ships an update fortnightly, and 电e盾 every 2 months. Most recently, 第四记 was updated on October 2, 2026 and 电e盾 on October 2, 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.*