# Whistle Blow vs RefMatch

The clearest difference is price: RefMatch at Free against Whistle Blow's $0.99. Whistle Blow's advantage is iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

RefMatch is free to download; Whistle Blow costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Whistle Blow | RefMatch |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | — |
| Monetization | Paid | — |
| Size | 6 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Asto](https://appshunter.io/developer/813484166) | [Henrique Bersani](https://appshunter.io/developer/1384634153) |

## What reviewers say

### Whistle Blow

[App page](https://appshunter.io/ios/app/whistle-blow/id492003219)

Transform your device into a realistic whistle with multiple triggering options. Adjust sensitivity, volume, and choose from various sounds for attention-getting, coaching, or sound effects. Works offline and is privacy-friendly.

**Highlights:** Blow-to-whistle with adjustable mic sensitivity, Tap or shake to trigger, Apple Watch remote triggering, Multiple whistle sound options, Adjustable volume control, Optional on-screen mic level meter, Offline functionality

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### RefMatch

[App page](https://appshunter.io/ios/app/refmatch/id6744838191)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Whistle Blow free?

Whistle Blow costs $0.99, with no in-app purchases.

### Is RefMatch free?

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

### Do Whistle Blow or RefMatch have ads?

Neither Whistle Blow nor RefMatch 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.*