# Ref vs Whistle

The clearest difference is iOS requirement: Whistle at 17.0 against Ref's 26.4. 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 | Ref | Whistle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 8 MB | 7 MB |
| Requires iOS | 26.4 | **17.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [SAMUEL LANE MADDOCK](https://appshunter.io/developer/1663206873) | [Suzanne Garrett](https://appshunter.io/developer/1808066473) |

## What reviewers say

### Ref

[App page](https://appshunter.io/ios/app/ref-vision/id6737510556)

**Features:** Apple Watch app

**In-app purchases:** none


### Whistle

[App page](https://appshunter.io/ios/app/whistle-sports-timer/id6754412929)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ref free?

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

### Is Whistle free?

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

### Do Ref or Whistle have ads?

Neither Ref nor Whistle 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.*