RTA Pro vs IND
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RTA Pro
Transform your iOS device into a professional audio analysis tool. Analyze ambient noise frequencies, pinpoint room resonance, and set up sound systems for events. Features include custom calibration, multiple display modes, and adjustable speed settings.
- Real-time audio spectrum analysis
- Frequency range 32Hz to 16kHz
- Linear, dB(A), and dB(C) weightings
- 1/3 Octave Bands, Octave Bands, and FFT display
- Adjustable speed settings
- Custom calibration options
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RTA Pro is a real time audio spektrum analyzer. It turns your iOS device into a powerful audio test system usually seen only in audio research laboratories and music studios. Such instruments are used to analyze the frequency spectrum of ambient noise, e.g. to be able to pinpoint frequencies which cause rumble in a room. Another use is the level setting setting of PA systems for concerts. Features: RTA Pro requires iOS11 or later and has been calibrated for the microphones of most iPhones. Custom calibration is also possible. The frequency range is 32Hz to 16kHz. Linear display, as well as weightings for measuring dB(A) and dB(C) is provided. Apart from 1/3 Octave Bands and Octave Bands, RTA Pro also features the display of a Fast Fourier Transform (FFT). The speed is adjustable to impulse, 128ms and 1 second.
IND
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Ahora con una interfaz simple y intuitiva, puedesgestionar completamente tu sistema de sonidoutilizando las siguientes configuraciones: Ruta de canales Ganancia general Ganancia de canales Crossovers Limiteador Elevador de entrada Elevador de salida Selector de fase Alineación de tiempo Memoria configurable Monitoreo de bateria Monitoreo del Límiteador A través de una interfaz did¡ctica e intuitiva, es posiblehacer todas las configuraciones de DSP desde estaApp utilizando un teléfono inteligente o tableta, facilitaros ajustes del sistema, se puede hacer desde susistema de audio en tiempo real y hay un modo dedemostración para las personas que no tienen algunaexperiencia con esto todavia y pueden aprender cómofunciona.
Screenshots
Verdict
The clearest difference is price: IND at Free against RTA Pro's $5.99. IND also leads on update cadence (every 10 days vs every 3 months) and iOS requirement (12.2 vs 17.6). RTA Pro's advantage is chart position (#191 vs unranked). On 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
IND is free to download; RTA Pro costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
RTA Pro ships an update every 3 months, IND every 10 days. Both last shipped on October 8, 2026.
| Parameter | RTA Pro | IND |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #191 — better | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 12.2 — better |
| Further details — not scored | ||
| Size | 12 MB | 57 MB |
| Age rating | 4+ | 17+ |
| Developer | Matthias Schorer | 伟 陈 |
In-app purchases
RTA Pro
No in-app purchases
IND
No in-app purchases
