KLANG vs RDTap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KLANG
Control your KLANG 3D Immersive In-Ear Monitoring system and create your personal monitor mix in a 3D space. Place instruments precisely and adapt your view with intuitive swipe gestures. A demo mode is available to experience the 3D audio.
- 3D Immersive In-Ear Monitoring control
- Personalized monitor mix creation
- Intuitive swipe gesture controls
- Instrument placement in 3D space
- Demo mode for 3D audio experience
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Immersive In-Ear Mixing with Intuitive Control KLANG:app puts your personal monitor mix in your hands. Place every instrument exactly where you want it in a 3D space around your head — for a natural, open and fatigue-free in-ear sound that lets you hear yourself and the band more clearly than ever. Built for musicians and monitor engineers, KLANG:app gives you fast, intuitive control of your KLANG 3D Immersive In-Ear Monitoring system on stage, in the studio and in broadcast. KEY FEATURES • Build your own mix in a true 3D space around your head • Natural, open and detailed in-ear sound that reduces ear fatigue • Fast "more me" control to balance yourself against the band • Individual channel settings, grouping and sorting • Snapshots and show files for repeatable, reliable shows • Full control: stage view, faders, groups, metering and channel detail • Integrates with DiGiCo and SSL consoles, plus ADM-OSC control from third-party devices WORKS WITH YOUR KLANG SYSTEM KLANG:konductor, KLANG:vokal, KLANG:fabrik, KLANG:vier, DMI-KLANG, KLANG:1 / KLANG:1pro and KLANG:kontroller. Lower Levels. Better Mixes.
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: RDTap at 50% against KLANG's 40%. KLANG's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, ads and in-app purchases 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.
KLANG ships an update every 3 weeks, RDTap fortnightly. The most recent releases landed on September 17, 2026 and July 7, 2026 respectively.
| Parameter | KLANG | RDTap |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (16 ratings) — better | — |
| Positive reviews | 40.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 16 — better | — |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 60 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | KLANG:technologies GmbH | RCF spa |
Customer experience
KLANG
RDTap
In-app purchases
KLANG
No in-app purchases
RDTap
No in-app purchases









