RTA Audio vs STETSOM DSPLAYER AMPLIFIER
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
STETSOM DSPLAYER AMPLIFIER
This application provides comprehensive control over professional audio adjustments for car and speaker installations. It supports various input methods including RCA, optical, USB, and Bluetooth, along with FM radio functionality. Fine-tune audio settings like equalization, phase, and delay for optimal sound.
- RCA and WIRE audio input
- High-fidelity optical audio input
- USB and Bluetooth music playback
- FM radio with favorites
- Digital audio output
- Equalization, Level, Phase, Delay adjustments
- Quick setup modes for car/speaker
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The STETSOM DSPLAYER AMPLIFIER offers full control over the use of professional audio features and adjustments. Its features include: - RCA and WIRE audio input - High-fidelity optical audio input - USB connection for MP3 music playback - Bluetooth connection for wireless music playback - Dedicated input for long-distance control - Audio output with digital processing for connection to other devices - FM radio with favorites mode - EQUALIZATION, LEVEL, PHASE, DELAY, CROSSOVER, VOLTMETER adjustments and quick setup modes for CAR and SPEAKER installation types
Screenshots
Verdict
The clearest difference is in-app purchases: STETSOM DSPLAYER AMPLIFIER at none against RTA Audio's 1. STETSOM DSPLAYER AMPLIFIER also leads on update cadence (every 3 weeks vs every 28 months). RTA Audio's advantage is review sentiment (59% vs 24%). On price, ads, device support and iOS requirement 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. STETSOM DSPLAYER AMPLIFIER asks for nothing beyond the download.
RTA Audio ships an update every 28 months, STETSOM DSPLAYER AMPLIFIER every 3 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.
| Parameter | RTA Audio | STETSOM DSPLAYER AMPLIFIER |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (32 ratings) — better | — |
| Positive reviews | 58.5% of reviews — better | 24.0% of reviews |
| Number of ratings | 32 — better | — |
| Update frequency | Every 28 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 60 MB |
| Age rating | 4+ | 4+ |
| Developer | New Ball s.r.o. | STETSOM ELETRÔNICA LTDA |
Customer experience
RTA Audio
STETSOM DSPLAYER AMPLIFIER
In-app purchases
RTA Audio
- Upgrade to full version$14.99
STETSOM DSPLAYER AMPLIFIER
No in-app purchases
Questions
Is RTA Audio free?
Is STETSOM DSPLAYER AMPLIFIER free?
Do RTA Audio or STETSOM DSPLAYER AMPLIFIER have ads?
Which is updated more often, RTA Audio or STETSOM DSPLAYER AMPLIFIER?
Other comparisons
