RTA Audio vs DMX 24i
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RTA Audio
Analyze audio in real-time with detailed frequency spectrum and waveform visualizations. Record and export your audio analysis results, including spectrograms and frequency tables, for sharing or archiving.
- Real-time audio analysis (FFT)
- Recording and offline processing
- Spectrogram and waveform visualization
- Exportable analysis reports (PDF)
- Adjustable resolution and frequency scale
- Peak and RMS metering
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RTA Audio Realtime analyzer with recording and Visualizer module with export. ••• Realtime analyzer ••• Realtime analyzer gives you the ability to analyze realtime audio input (built-in microphone or external audio accessory inputs) using Fast Fourier Transform with selected window function. You can also record the input for future offline processing or export. ••• Visualizer ••• This module presents you the results of offline audio analysis. Selecting previously captured recording gives the graph view, spectrogram and waveform of the audio data. Simple controls gives you the ability to play, loop, seek and change rate of the recording synchronized with analysis data presentation. Export function allows you to share or archive your analysis. Resulting PDF document contains basic recording information, spectrogram, peak & RMS graph and frequency table data with maximum peaks (with the time of the occurrence in recording) ••• Features ••• Resolution: 1/2 - 1/96 Octave Logarithmic frequency scale Fixed frequency range (20 - 20kHz) Tone scale view C₀- H₈ (A₄ = 440Hz) Peak hold graph Peak average graph RMS average graph Pointer (watch) function Peak and RMS input meter ••• Audio input specification ••• Audio session mode - measurement Input gain control Sample rate: 48000 Hz Bit depth: Float32 Channel: 1(mono) Frequency range: 20Hz - 20kHz Dynamic range: -100dB - 0dB ••• FFT (Fast Fourier Transform) specification ••• Frame size: 8192 Overlap: from 60% to 90% Smoothing Window: Bartlett-Hann, Blackman, Blackman-Harris (default), Blackman-Nuttell, Cosine, Flat Top, Gauss, Hamming, Hann, Lanczos, Nuttall, Rectangular, Triangular Hardware acceleration
DMX 24i
This application allows musicians to wirelessly control the parameters of a Digital Mixer 24.4. Adjust volumes for various channels, sub-mixes, and effects directly from your device.
- Wireless mixer parameter control
- Volume control for CH1-24
- Volume control for SUB1-4
- Volume control for MAIN, AUX1-8, RTRN1-2, TAPE IN
- Volume control for FX1-2
- Automatic device search
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Description: DMX-V is used to set the parameter of Digital Mixer 24.4, with it musician can control their mixer by wireless. Features: * Control the volume of CH1-24, SUB1-4, MAIN, AUX1-8, RTRN1-2, TAPE IN and FX1-2. * Control the volume of each channel to AUX1-8, FX1-2. * Search device automatically. Requirements: * iPhone / iPod Touch with iOS6.0 or above. * a wireless router.
Screenshots
Verdict
The clearest difference is rating: RTA Audio at 3.5 against DMX 24i's 2.0. RTA Audio also leads on ratings volume (32 vs 1). DMX 24i's advantage is in-app purchases (none vs 1) and update cadence (monthly vs every 28 months). On price, ads 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
Both are free to download. RTA Audio sells 1 one-off in-app purchase. DMX 24i asks for nothing beyond the download.
RTA Audio holds the better App Store score, 3.5 against 2.0. That said, the two scores are not equally well evidenced: RTA Audio has 32 ratings behind it against 1, so its average is the more settled of the two.
RTA Audio ships an update every 28 months, DMX 24i monthly. Both last shipped on November 1, 2026.
| Parameter | RTA Audio | DMX 24i |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (32 ratings) — better | 2.0 (1 ratings) |
| Positive reviews | 58.5% of reviews | — |
| Number of ratings | 32 — better | 1 |
| Update frequency | Every 28 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 6.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | New Ball s.r.o. | SEIKAKU |
Customer experience
RTA Audio
DMX 24i
In-app purchases
RTA Audio
- Upgrade to full version$14.99
DMX 24i
No in-app purchases
