RTA Pro Analyzer for Android

RTA Pro Analyzer by RadonSoft converts Android devices into a portable real-time audio spectrum analyzer for professional measurement and system tuning. The app provides live frequency and level readouts alongside measurement logging to support on-site diagnostics and reporting. Key capabilities include high-resolution analysis, calibration storage, and configurable displays to match field workflows. Target users are sound engineers, AV technicians, and serious audio enthusiasts who need precise, mobile acoustical measurement tools.

The app functions as a dedicated acoustical instrument for live sound and installed-audio work, enabling technicians to inspect room response, verify speaker behavior, and locate environmental noise peaks through continuous Peak and RMS monitoring. In practice the app supports quick diagnostic passes during setup, confirmation of corrective EQ choices, and creation of measurement logs that document condition changes across a performance or install session.

What measurement tasks does the tool enable in the field?

What frequency resolution and export options does it provide?

Analysis precision is a defining capability: the tool supports octave filters with 1, 1/2, 1/3, 1/4, 1/6, and 1/12 spacing and can display up to 120 bands for narrow-band identification. Scalable peak holding helps track transient maxima, while permanent calibration storage preserves reference adjustments. Measurement data and screen captures are exportable, with Peak and RMS values available as .csv for external analysis and reporting.

How does the interface and workflow hold up for mobile use?

The interface offers multiple color schemes and display options so technicians can adapt readouts to venue lighting and personal preference. The app is notably small in footprint, under 1MB, and presented without ads to avoid distractions during work. Calibration settings persist between sessions, which supports consistent comparisons across different venues and hardware configurations without re-entering reference values.

Is the app aimed at professionals or casual users?

RadonSoft positions the Pro edition toward professionals such as acoustic consultants, live-event AV crews, and car audio installers by adding higher-resolution bands and export features beyond the standard edition. User reports indicate professionals appreciate its accuracy, while the developer and community note that absolute precision depends on the mobile device's microphone quality. The developer's Signal Generator and Noise and Sweep Generator are recommended for producing calibration signals.

A focused measurement companion best used alongside calibrated chains

The app is a focused, practical choice for professionals who require portable, documented frequency analysis during setup and troubleshooting. Although mobile microphones constrain absolute accuracy, the tool functions well as a field reference and reporting aid. Best use pairs the app with a calibrated microphone or the developer's signal tools for verification when final measurement fidelity matters.