# 保镖报警器 vs 77电脑助手

The clearest difference is in-app purchases: 保镖报警器 at none against 77电脑助手's 5. 保镖报警器 also leads on ads (none vs shown) and iOS requirement (8.0 vs 12.0). 77电脑助手's advantage is update cadence (monthly vs every 2 months). On price and device support there is nothing between them.

Both are free to download. 77电脑助手 sells 5 one-off in-app purchases. 保镖报警器 asks for nothing beyond the download.

保镖报警器 ships an update every 2 months, 77电脑助手 monthly. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | 保镖报警器 | 77电脑助手 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Size | 28 MB | 68 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [浙江保镖电子科技有限公司](https://appshunter.io/developer/966757911) | [开拓 蔺](https://appshunter.io/developer/1620485229) |

## What reviewers say

### 保镖报警器

[App page](https://appshunter.io/ios/app/id966757912)

**Features:** macOS Compatibility

**In-app purchases:** none


### 77电脑助手

[App page](https://appshunter.io/ios/app/77/id1620485227)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 77电脑助手-周VIP | $0.99 | one-time |
| 77电脑助手-月VIP | $0.99 | one-time |
| 77电脑助手-季VIP | $2.99 | one-time |
| 77电脑助手-年VIP | $3.99 | one-time |
| 77电脑助手-永久VIP | $9.99 | one-time |


## Frequently asked questions

### Is 保镖报警器 free?

保镖报警器 is free to download, with no in-app purchases.

### Is 77电脑助手 free?

77电脑助手 is free to download, with in-app purchases available.

### Do 保镖报警器 or 77电脑助手 have ads?

77电脑助手 shows ads; 保镖报警器 does not.

### Which is updated more often, 保镖报警器 or 77电脑助手?

保镖报警器 ships an update every 2 months, and 77电脑助手 monthly. Most recently, 保镖报警器 was updated on October 29, 2026 and 77电脑助手 on October 21, 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.*