# Send SOS vs SOSホイッスル

The clearest difference is update cadence: SOSホイッスル at every 5 days against Send SOS's every 7 months. SOSホイッスル also leads on review sentiment (67% vs 50%) and iOS requirement (8.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Send SOS ships an update every 7 months, SOSホイッスル every 5 days. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Send SOS | SOSホイッスル |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/send-sos/id1088568416/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 0 MB | 19 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christian Rusche](https://appshunter.io/developer/971175500) | [ComNetSystem](https://appshunter.io/developer/697816110) |

## What reviewers say

### Send SOS

[App page](https://appshunter.io/ios/app/send-sos/id1088568416)

Instantly share your precise location with a chosen contact in emergencies. This straightforward utility allows for quick and easy distress messaging with vital coordinates.

**Highlights:** Emergency messaging, Current coordinate sharing, Simple interface, One-tap sending

**Features:** macOS Compatibility

**In-app purchases:** none


### SOSホイッスル

[App page](https://appshunter.io/ios/app/sos/id1301828783)

This utility app produces a loud whistle sound and a blinking light when a button is pressed, designed to help users signal for help in emergencies. It offers customizable modes for both the whistle and light functions.

**Highlights:** Whistle sound on button press, Blinking light on button press, Adjustable whistle modes, Adjustable light modes, Emergency signaling tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Send SOS free?

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

### Is SOSホイッスル free?

SOSホイッスル is free to download, with no in-app purchases.

### Do Send SOS or SOSホイッスル have ads?

Neither Send SOS nor SOSホイッスル shows ads.

### Which is updated more often, Send SOS or SOSホイッスル?

Send SOS ships an update every 7 months, and SOSホイッスル every 5 days. Most recently, Send SOS was updated on October 5, 2026 and SOSホイッスル on October 7, 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.*