# Harp Strings vs Hearing Amplifier

The clearest difference is rating: Harp Strings at 5.0 against Hearing Amplifier's 1.9. Harp Strings also leads on update cadence (every 8 days vs every 5 months) and iOS requirement (9.0 vs 11.0). Hearing Amplifier's advantage is ratings volume (15 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Harp Strings holds the better App Store score, 5.0 against 1.9. That said, the two scores are not equally well evidenced: Hearing Amplifier has 15 ratings behind it against 1, so its average is the more settled of the two.

Harp Strings ships an update every 8 days, Hearing Amplifier every 5 months. The most recent releases landed on July 16, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Harp Strings | Hearing Amplifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/harp-strings/id1095138723/reviews)** | [1.9 (15 ratings)](https://appshunter.io/ios/app/hearing-amplifier/id1152936311/reviews) |
| Number of ratings | 1 | **15** |
| Positive reviews | — | 26.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 5 months |
| Monetization | Free | Free |
| Size | 34 MB | 0 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bitwise Systems Inc](https://appshunter.io/developer/1095138722) | [NOS Microsystems Ltd.](https://appshunter.io/developer/978006828) |

## 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


### Hearing Amplifier

[App page](https://appshunter.io/ios/app/hearing-amplifier/id1152936311)

Transform your phone into a powerful listening device. This app amplifies ambient sounds and allows you to control volume, enhancing your ability to hear your surroundings. It supports Bluetooth headphones for a seamless experience.

**Highlights:** Enhances ambient sounds, Turns phone into a listening device, Volume control for surroundings, Simple, easy-to-use interface, Supports Bluetooth headphones and AirPods

**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 Hearing Amplifier free?

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

### Which has better reviews, Harp Strings or Hearing Amplifier?

Harp Strings is rated higher. Harp Strings averages 5.0 out of 5 from 1 ratings, while Hearing Amplifier averages 1.9 from 15 ratings.

### Do Harp Strings or Hearing Amplifier have ads?

Neither Harp Strings nor Hearing Amplifier shows ads.

### Which is updated more often, Harp Strings or Hearing Amplifier?

Harp Strings ships an update every 8 days, and Hearing Amplifier every 5 months. Most recently, Harp Strings was updated on July 16, 2026 and Hearing Amplifier on September 18, 2026.

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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.*