# Harp Strings vs Kasetofon

The clearest difference is in-app purchases: Harp Strings at none against Kasetofon's 1. Harp Strings also leads on update cadence (every 8 days vs every 3 weeks) and iOS requirement (9.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Kasetofon sells 1 one-off in-app purchase. Harp Strings asks for nothing beyond the download.

Harp Strings ships an update every 8 days, Kasetofon every 3 weeks. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Harp Strings | Kasetofon |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 34 MB | 4 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bitwise Systems Inc](https://appshunter.io/developer/1095138722) | [Ideja 3000 doo Uzice](https://appshunter.io/developer/1783558987) |

## 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


### Kasetofon

[App page](https://appshunter.io/ios/app/kasetofon/id6793605243)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Studio Pack | $3.99 | one-time |


## Frequently asked questions

### Is Harp Strings free?

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

### Is Kasetofon free?

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

### Do Harp Strings or Kasetofon have ads?

Neither Harp Strings nor Kasetofon shows ads.

### Which is updated more often, Harp Strings or Kasetofon?

Harp Strings ships an update every 8 days, and Kasetofon every 3 weeks. Most recently, Harp Strings was updated on October 4, 2026 and Kasetofon on October 9, 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.*