# Whistle S.O.S vs BNotes

The clearest difference is iOS requirement: Whistle S.O.S at 12.0 against BNotes's 18.5. 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.

## The numbers

| Metric | Whistle S.O.S | BNotes |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Monetization | Free | — |
| Size | 25 MB | 6 MB |
| Requires iOS | **12.0** | 18.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Osman Koc](https://appshunter.io/developer/1729993108) | [Mehmet ALTUNDIS](https://appshunter.io/developer/1823835686) |

## What reviewers say

### Whistle S.O.S

[App page](https://appshunter.io/ios/app/whistle-sos/id6477729209)

This emergency alert app allows you to broadcast your voice with a single button press when trapped in a disaster. It serves as a modern alternative to a traditional whistle, helping you signal for help quickly.

**Highlights:** Emergency voice broadcasting, One-button activation, Disaster preparedness tool, Modern whistle alternative, Alerts surroundings for help

**Features:** macOS Compatibility

**In-app purchases:** none


### BNotes

[App page](https://appshunter.io/ios/app/bnotes/id6748001076)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Whistle S.O.S free?

Whistle S.O.S is free to download, with no in-app purchases.

### Is BNotes free?

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

### Do Whistle S.O.S or BNotes have ads?

Neither Whistle S.O.S nor BNotes shows ads.

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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.*