# DSP 1.8 vs HSA

The clearest difference is update cadence: HSA at every 3 weeks against DSP 1.8's every 39 months. HSA also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

DSP 1.8 ships an update every 39 months, HSA every 3 weeks. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | DSP 1.8 | HSA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dsp-18/id1289173178/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 47 MB | 5 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Rainbow Audio GmbH](https://appshunter.io/developer/1284821198) | [杏生 卢](https://appshunter.io/developer/1094592555) |

## What reviewers say

### DSP 1.8

[App page](https://appshunter.io/ios/app/dsp-18/id1289173178)

Configure and control a specific audio DSP device wirelessly. Stream audio directly over WiFi. Requires a dedicated hardware module for operation.

**Highlights:** Wireless configuration, WiFi audio streaming, DSP device control, Requires WiFi module

**Features:** macOS Compatibility

**In-app purchases:** none


### HSA

[App page](https://appshunter.io/ios/app/hsa-dsp31pro/id1586421043)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DSP 1.8 free?

DSP 1.8 is free to download, with no in-app purchases.

### Is HSA free?

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

### Do DSP 1.8 or HSA have ads?

Neither DSP 1.8 nor HSA shows ads.

### Which is updated more often, DSP 1.8 or HSA?

DSP 1.8 ships an update every 39 months, and HSA every 3 weeks. Most recently, DSP 1.8 was updated on October 3, 2026 and HSA on October 7, 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.*