# AX vs DS18 DSP

The clearest difference is review sentiment: DS18 DSP at 100% against AX's 0%. DS18 DSP also leads on rating (4.2 vs 2.2) and update cadence (every 2 days vs every 2 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

DS18 DSP holds the better App Store score, 4.2 against 2.2. Both are backed by a comparable volume of ratings — 5 and 5 respectively. Written reviews point the same way: 0% of AX's written reviews are positive against 100% of DS18 DSP's.

AX ships an update every 2 months, DS18 DSP every 2 days. The most recent releases landed on October 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AX | DS18 DSP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (5 ratings)](https://appshunter.io/ios/app/ax-dsp-xl/id1495854432/reviews) | **[4.2 (5 ratings)](https://appshunter.io/ios/app/ds18-dsp/id1625944939/reviews)** |
| Number of ratings | 5 | 5 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 10 MB | 76 MB |
| Requires iOS | 12.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Metra Electronics Corp.](https://appshunter.io/developer/1133973919) | [SPIRIT LLC](https://appshunter.io/developer/1327651109) |

## What reviewers say

### AX

[App page](https://appshunter.io/ios/app/ax-dsp-xl/id1495854432)

Enhance your car's audio system with this digital signal processor. It offers an all-in-one solution for various audio setups, allowing for improved sound quality and subwoofer integration while preserving factory features. Control settings easily via a smartphone app.

**Highlights:** Digital Signal Processor, Subwoofer integration, Preserves OE features, Bluetooth smartphone control, Vehicle-specific T-Harnesses (sold separately), All-in-one solution

**Features:** macOS Compatibility

**In-app purchases:** none


### DS18 DSP

[App page](https://appshunter.io/ios/app/ds18-dsp/id1625944939)

Control specific digital sound processor models with a smartphone or tablet. Adjust channels, gain, crossovers, limiters, and equalization in real-time. Features a demo mode for learning and battery/limiter monitoring.

**Highlights:** Channels Routing, General and Channels Gain, Crossover Settings, Limiter Control, Input/Output Equalizer, Time Alignment, Configurable Memories

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AX free?

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

### Is DS18 DSP free?

DS18 DSP is free to download, with no in-app purchases.

### Which has better reviews, AX or DS18 DSP?

DS18 DSP is rated higher. AX averages 2.2 out of 5 from 5 ratings, while DS18 DSP averages 4.2 from 5 ratings.

### Do AX or DS18 DSP have ads?

Neither AX nor DS18 DSP shows ads.

### Which is updated more often, AX or DS18 DSP?

AX ships an update every 2 months, and DS18 DSP every 2 days. Most recently, AX was updated on October 3, 2026 and DS18 DSP on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*