K vs RDTap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
K
Control and manage K-array active subwoofers and amplifiers directly from your mobile device. Adjust output configurations, load presets, route signals, and monitor system performance via Wi-Fi connection.
- Direct management of K-array active subwoofers
- Control Kommander-KA amplifiers with DSP
- Wi-Fi connectivity to amplifiers
- Manage output configuration
- Load loudspeaker presets
- Design signal routing
- Control audio level
- Monitor system performance
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K-array Connect is the mobile app providing direct managing and control over K-array active subwoofers Thunder-KS and Kommander-KA amplifiers with DSP. Use your mobile device (smartphone or tablet) and connect it Wi-Fi to K-array KS and KA amplifiers with DSP: launch K-array Connect to manage the output configuration, load the loudspeakers presets, design the signal routing, control audio level and monitor the system performance.
RDTap
Control and configure SUB 90XX series subwoofers with access to internal parameters. Offers professionally tuned presets for seamless integration with top speakers and supports rapid setup for ground stacking or sub cluster configurations.
- Access internal subwoofer parameters
- Advanced Crossover Engine (ACE) presets
- Professionally tuned level and phase matching
- Ground stacking and sub cluster configuration
- Rapid setup for speaker designs
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RDTap is dedicated to the SUB 90XX family of touring subwoofers (https://www.rcf.it/en/sub-9000-series), providing full access to their internal parameters. Several presets are available for their internal Advanced Crossover Engine (ACE), offering a professionally tuned match, both in level and phase, between the subwoofer itself and a selection of top speakers. In addition, a Ground Stacking or Sub Cluster combination of up to 3 subwoofers and one or more top speakers (defined as Design) can be rapidly defined and configured, with simple programming steps.
Screenshots
Verdict
The clearest difference is review sentiment: K at 100% against RDTap's 50%. K also leads on iOS requirement (13.4 vs 15.0). RDTap's advantage is update cadence (fortnightly vs every 2 months). 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.
K ships an update every 2 months, RDTap fortnightly. The most recent releases landed on October 2, 2026 and October 4, 2026 respectively.
| Parameter | K | RDTap |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 22 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | K-array s.u.r.l. | RCF spa |
Customer experience
K
RDTap
In-app purchases
K
No in-app purchases
RDTap
No in-app purchases
