# Harp Strings vs XS

The clearest difference is iOS requirement: Harp Strings at 9.0 against XS's 12.0. 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 | Harp Strings | XS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/harp-strings/id1095138723/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Monetization | Free | — |
| Size | 34 MB | 13 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Bitwise Systems Inc](https://appshunter.io/developer/1095138722) | [科 李](https://appshunter.io/developer/1098552099) |

## What reviewers say

### Harp Strings

[App page](https://appshunter.io/ios/app/harp-strings/id1095138723)

Adjust audio output for optimal speaker and room acoustics. Offers advanced tone controls for fine-tuning, a mute switch, and the ability to edit amplifier names. Tailor your sound experience with precision.

**Highlights:** Tone controls for speaker and room matching, Advanced tone tuning, Mute switch, Amplifier name editor

**Features:** macOS Compatibility

**In-app purchases:** none


### XS

[App page](https://appshunter.io/ios/app/xs-amp-lifier/id6468880936)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Harp Strings free?

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

### Is XS free?

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

### Do Harp Strings or XS have ads?

Neither Harp Strings nor XS 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.*