# windowID vs Sound Amplifier

The clearest difference is in-app purchases: windowID at none against Sound Amplifier's 3. windowID also leads on iOS requirement (15.0 vs 17.6). On price, ads and device support there is nothing between them.

Both are free to download. Sound Amplifier sells 3 in-app purchases, starting at $6.99 per 7 days. windowID asks for nothing beyond the download.

## The numbers

| Metric | windowID | Sound Amplifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (26 ratings)](https://appshunter.io/ios/app/sound-amplifier-hear-boost/id6756648714/reviews)** |
| Number of ratings | — | **26** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 11 days |
| Monetization | — | Free with in-app purchases |
| Size | 67 MB | 10 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Winkhaus Polska Beteiligungs spółka z o.o. sp.k.](https://appshunter.io/developer/1844822655) | [Lash Karetski](https://appshunter.io/developer/1797093827) |

## What reviewers say

### windowID

[App page](https://appshunter.io/ios/app/windowid/id6755592671)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sound Amplifier

[App page](https://appshunter.io/ios/app/sound-amplifier-hear-boost/id6756648714)

Amplify and clarify audio in real-time, turning your phone into a powerful hearing aid. Instantly replay the last 30 seconds of sound and boost volume beyond normal limits. Works with any headphones and in background mode for convenience.

**Highlights:** Real-time sound amplification, Instant 30-second audio replay, Microphone boost for distant sounds, Background listening mode, Live sound waveform visualization, Works with wired and wireless headphones

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $6.99 | per 7 days |
| Yearly Premium | $34.99 | per year |
| Premium | $14.99 | one-time |


## Frequently asked questions

### Is windowID free?

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

### Is Sound Amplifier free?

Sound Amplifier is free to download, with in-app purchases available.

### Do windowID or Sound Amplifier have ads?

Neither windowID nor Sound Amplifier 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.*