# HARMONY DSP vs FDSK

The clearest difference is update cadence: FDSK at every 2 months against HARMONY DSP's every 19 months. 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.

HARMONY DSP ships an update every 19 months, FDSK every 2 months. The most recent releases landed on May 16, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | HARMONY DSP | FDSK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 months** |
| Size | 3 MB | 60 MB |
| Requires iOS | **11.0** | 12.2 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [APEX Italy](https://appshunter.io/developer/1446565085) | [Guangzhou Aidan Blessindo Electronic Co.,Ltd.](https://appshunter.io/developer/1413008258) |

## What reviewers say

### HARMONY DSP

[App page](https://appshunter.io/ios/app/harmony-dsp/id1638244924)

**Features:** macOS Compatibility

**In-app purchases:** none


### FDSK

[App page](https://appshunter.io/ios/app/fdsk/id6740399903)

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

**In-app purchases:** none


## Frequently asked questions

### Is HARMONY DSP free?

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

### Is FDSK free?

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

### Do HARMONY DSP or FDSK have ads?

Neither HARMONY DSP nor FDSK shows ads.

### Which is updated more often, HARMONY DSP or FDSK?

HARMONY DSP ships an update every 19 months, and FDSK every 2 months. Most recently, HARMONY DSP was updated on May 16, 2026 and FDSK on September 12, 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.*