# 518 一键报警 vs Help Me SOS Alert

518 一键报警 and Help Me SOS Alert are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 518 一键报警 | Help Me SOS Alert |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Size | 13 MB | 23 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Quanzhou Heyi Electronics Co., Ltd.](https://appshunter.io/developer/935300847) | [航 王](https://appshunter.io/developer/1895845885) |

## What reviewers say

### 518 一键报警

[App page](https://appshunter.io/ios/app/518/id1571864537)

**Features:** macOS Compatibility

**In-app purchases:** none


### Help Me SOS Alert

[App page](https://appshunter.io/ios/app/help-me-sos-alert/id6764615620)

**In-app purchases:** none


## Frequently asked questions

### Is 518 一键报警 free?

518 一键报警 is free to download, with no in-app purchases.

### Is Help Me SOS Alert free?

Help Me SOS Alert is free to download, with no in-app purchases.

### Do 518 一键报警 or Help Me SOS Alert have ads?

Neither 518 一键报警 nor Help Me SOS Alert shows ads.

### Which is updated more often, 518 一键报警 or Help Me SOS Alert?

518 一键报警 ships an update weekly, and Help Me SOS Alert weekly. Most recently, 518 一键报警 was updated on November 7, 2026 and Help Me SOS Alert on October 31, 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.*