# MDA vs HARMONY DSP

The clearest difference is update cadence: MDA at every 3 months against HARMONY DSP's every 19 months. MDA also leads on iOS requirement (8.0 vs 11.0). 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.

MDA ships an update every 3 months, HARMONY DSP every 19 months. The most recent releases landed on September 29, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | MDA | HARMONY DSP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 19 months |
| Size | 6 MB | 3 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杏生 卢](https://appshunter.io/developer/1094592555) | [APEX Italy](https://appshunter.io/developer/1446565085) |

## What reviewers say

### MDA

[App page](https://appshunter.io/ios/app/mda-dsp/id1157857067)

**Features:** macOS Compatibility

**In-app purchases:** none


### HARMONY DSP

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MDA free?

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

### Is HARMONY DSP free?

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

### Do MDA or HARMONY DSP have ads?

Neither MDA nor HARMONY DSP shows ads.

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

MDA ships an update every 3 months, and HARMONY DSP every 19 months. Most recently, MDA was updated on September 29, 2026 and HARMONY DSP on September 15, 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.*