DSI vs Marts Digital
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
Marts Digital
This application allows users to debug car audio devices by adjusting various parameters via a Bluetooth connection. It provides a digital interface for fine-tuning audio settings directly from a smartphone.
- Car audio device debugging
- Bluetooth parameter adjustment
- Digital interface for audio settings
- Smartphone control
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Marts Digital is an app debugging software for car audio devices, which adjusts various parameters of the device through Bluetooth connection.
Screenshots
Verdict
The clearest difference is rating: DSI at 3.7 against Marts Digital's 2.2. DSI also leads on update cadence (every 2 months vs every 17 months) and iOS requirement (9.0 vs 12.2). Marts Digital's advantage is ratings volume (12 vs 3). On price, ads, in-app purchases and monetization model 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 holds the better App Store score, 3.7 against 2.2. Both are backed by a comparable volume of ratings — 3 and 12 respectively.
DSI ships an update every 2 months, Marts Digital every 17 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | DSI | Marts Digital |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | 2.2 (12 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 3 | 12 — better |
| Update frequency | Every 2 months — better | Every 17 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 9.0 — better | 12.2 |
| Further details — not scored | ||
| Size | 12 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | DD Audio | Guang Dong Sound Power |
Customer experience
DSI
Marts Digital
In-app purchases
DSI
No in-app purchases
Marts Digital
No in-app purchases
