Comparison

QUESTRA Panels vs RDTap

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

Head to head
About

QUESTRA Panels

Features
Read full description

QUESTRA® Panels serve as the control center for networked LD Systems installation solutions. Using QUESTRA® Software you can design simple and intuitive interfaces which allow easy control of  your system. Simply download QUESTRA® Panels on your iOS device, assign your custom panel design to the device, and you're ready to control.   Designed as an integral part of QUESTRA®, QUESTRA® Panels is your interface to control and manage your system.   Please note: 1. QUESTRA® v1.4.20 is required 2. This application is for controlling functionality only, not for creating or modifying panels. 3. QUESTRA® Panels requires the setup and design process to be handled by the QUESTRA® Software.   With the QUESTRA® Software for Windows, you have the freedom to design and customize your panel functionality with its built-in editor. You can create users, assign specific roles, restrict access to certain functions, and ensure that critical network settings remain unmodified.

About

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.

Highlights
  • 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
Features
Read full description

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

QUESTRA Panels4 screens
RDTap3 screens

Verdict

The call

The clearest difference is update cadence: RDTap at fortnightly against QUESTRA Panels's every 5 weeks. QUESTRA Panels's advantage is iOS requirement (12.0 vs 15.0). 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

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

QUESTRA Panels ships an update every 5 weeks, RDTap fortnightly. The most recent releases landed on September 12, 2026 and July 7, 2026 respectively.

Scorecard2 real differences · 6 level
QUESTRA Panels versus RDTap: the parameters behind the verdict, then further details
ParameterQUESTRA PanelsRDTap
PriceFreeFree
Positive reviews—50.0% of reviews
Update frequencyEvery 5 weeksFortnightly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size67 MB36 MB
Age rating4+4+
DeveloperADAM HALL GMBHRCF spa

In-app purchases

None

QUESTRA Panels

No in-app purchases

None

RDTap

No in-app purchases

Questions

Is QUESTRA Panels free?
QUESTRA Panels is free to download, with no in-app purchases.
Is RDTap free?
RDTap is free to download, with no in-app purchases.
Do QUESTRA Panels or RDTap have ads?
Neither QUESTRA Panels nor RDTap shows ads.
Which is updated more often, QUESTRA Panels or RDTap?
QUESTRA Panels ships an update every 5 weeks, and RDTap fortnightly. Most recently, QUESTRA Panels was updated on September 12, 2026 and RDTap on July 7, 2026.

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