Comparison

DSI vs DS18 iDSP

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DSI

This application allows users to fine-tune their car audio systems using a digital signal processor. It offers comprehensive controls for equalization, crossovers, time alignment, and more, suitable for both professionals and enthusiasts.

Highlights
  • Bluetooth 5.0 connectivity
  • 6 customizable presets
  • 31-band parametric EQ per channel
  • Phase correction
  • Crossover adjustments
  • Input/output level controls
  • Time alignment
Features
Read full description

The DSI-3 app is designed for use with the DD Audio DSI-3 digital signal processor, this app gives you the tools needed to fine tune virtually every aspect of you car audio system. Whether you’re a professional installer or an obsessive audiophile this app allows you to realize the true potential of your audio equipment with a straightforward layout and logical controls. Features: - Bluetooth 5.0 compatible - 6 customizable presets - 31 bands of parametric equalization per channel - Phase correction - Crossover type, frequency, and slope adjustments - Independent input and output level controls - Time alignment - Input summing and linking

About

DS18 iDSP

Features
Read full description

This application is designed to control only these DSP models: i48DSP, i26DSP and i24DSP. Now with a simple and intuitive interface you can manage your sound system completely using the following settings: • Channels Routing • General Gain • Channels Gain • Crossover • Limiter • Input Equalizer • Output Equalizer • Phase Selector • Time Alignment • Configurable Memories • Battery Monitoring • Limiter Monitoring Through a didactic and intuitive interface, it is possible do all the DSP configurations from this App using a smartphone or tablet, making easier the system adjustments, it can be done from your audio system in real time and there is a demo mode for the people who don't have some experience with this yet and can learn how it works.

Screenshots

DSI4 screens
DS18 iDSP4 screens

Verdict

The call

The clearest difference is update cadence: DSI at every 2 months against DS18 iDSP's every 6 months. DSI also leads on iOS requirement (9.0 vs 12.2). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

DSI ships an update every 2 months, DS18 iDSP every 6 months. The most recent releases landed on September 9, 2026 and September 12, 2026 respectively.

Scorecard2 real differences · 7 level
DSI versus DS18 iDSP: the parameters behind the verdict, then further details
ParameterDSIDS18 iDSP
PriceFreeFree
Rating3.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 2 months — betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS9.0 — better12.2
Further details — not scored
Size12 MB59 MB
Age rating4+17+
DeveloperDD AudioSPIRIT LLC

In-app purchases

None

DSI

No in-app purchases

None

DS18 iDSP

No in-app purchases

Questions

Is DSI free?
DSI is free to download, with no in-app purchases.
Is DS18 iDSP free?
DS18 iDSP is free to download, with no in-app purchases.
Do DSI or DS18 iDSP have ads?
Neither DSI nor DS18 iDSP shows ads.
Which is updated more often, DSI or DS18 iDSP?
DSI ships an update every 2 months, and DS18 iDSP every 6 months. Most recently, DSI was updated on September 9, 2026 and DS18 iDSP on September 12, 2026.

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