# DSP 1.8 vs Solar Compass Pro

The clearest difference is in-app purchases: DSP 1.8 at none against Solar Compass Pro's 1. DSP 1.8 also leads on iOS requirement (12.0 vs 17.0). Solar Compass Pro's advantage is update cadence (every 2 months vs every 39 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Solar Compass Pro sells 1 one-off in-app purchase. DSP 1.8 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for DSP 1.8 against 5.0 for Solar Compass Pro. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

DSP 1.8 ships an update every 39 months, Solar Compass Pro every 2 months. The most recent releases landed on October 20, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | DSP 1.8 | Solar Compass Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/dsp-18/id1289173178/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/solar-compass-pro/id6756751543/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 47 MB | 7 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Rainbow Audio GmbH](https://appshunter.io/developer/1284821198) | [C. Ray Carroll LLC](https://appshunter.io/developer/1794874509) |

## 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


### Solar Compass Pro

[App page](https://appshunter.io/ios/app/solar-compass-pro/id6756751543)

This app provides real-time sun direction and solar path visualization to aid in planning solar projects, panel placement, and understanding solar movement. It offers daily solar outlooks, production estimates, and installation guidance for various outdoor planning needs.

**Highlights:** Live solar compass, Sun path visualization, Daily solar outlooks, Solar output estimation, Install guidance, Golden hour timing, Saved places and setups

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Supporter Mode | $0.99 | one-time |


## Frequently asked questions

### Is DSP 1.8 free?

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

### Is Solar Compass Pro free?

Solar Compass Pro is free to download, with in-app purchases available.

### Which has better reviews, DSP 1.8 or Solar Compass Pro?

DSP 1.8 and Solar Compass Pro are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do DSP 1.8 or Solar Compass Pro have ads?

Neither DSP 1.8 nor Solar Compass Pro shows ads.

### Which is updated more often, DSP 1.8 or Solar Compass Pro?

DSP 1.8 ships an update every 39 months, and Solar Compass Pro every 2 months. Most recently, DSP 1.8 was updated on October 20, 2026 and Solar Compass Pro 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.*