DSI vs DSP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Bluetooth 5.0 connectivity
- 6 customizable presets
- 31-band parametric EQ per channel
- Phase correction
- Crossover adjustments
- Input/output level controls
- Time alignment
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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
DSP
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Connect smart devices and read song information from USB drives
Screenshots
Verdict
The clearest difference is update cadence: DSI at every 2 months against DSP's every 5 months. DSI also leads on iOS requirement (9.0 vs 12.0). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DSI ships an update every 2 months, DSP every 5 months. The most recent releases landed on September 9, 2026 and September 21, 2026 respectively.
| Parameter | DSI | DSP |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 12 MB | 7 MB |
| Age rating | 4+ | 17+ |
| Developer | DD Audio | 明武 伍 |
In-app purchases
DSI
No in-app purchases
DSP
No in-app purchases
