# RTA Audio vs STETSOM DSPLAYER AMPLIFIER

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.

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.

## The numbers

| Metric | RTA Audio | STETSOM DSPLAYER AMPLIFIER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (32 ratings)](https://appshunter.io/ios/app/rta-audio/id525324684/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | **58.5% of reviews** | 24.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2 MB | 60 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [New Ball s.r.o.](https://appshunter.io/developer/1178970340) | [STETSOM ELETRÔNICA LTDA](https://appshunter.io/developer/1110480569) |

## What reviewers say

### RTA Audio

[App page](https://appshunter.io/ios/app/rta-audio/id525324684)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to full version | $14.99 | one-time |


### STETSOM DSPLAYER AMPLIFIER

[App page](https://appshunter.io/ios/app/stetsom-dsplayer-amplifier/id6499367116)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RTA Audio free?

RTA Audio is free to download, with in-app purchases available.

### Is STETSOM DSPLAYER AMPLIFIER free?

STETSOM DSPLAYER AMPLIFIER is free to download, with no in-app purchases.

### Do RTA Audio or STETSOM DSPLAYER AMPLIFIER have ads?

Neither RTA Audio nor STETSOM DSPLAYER AMPLIFIER shows ads.

### Which is updated more often, RTA Audio or STETSOM DSPLAYER AMPLIFIER?

RTA Audio ships an update every 28 months, and STETSOM DSPLAYER AMPLIFIER every 3 weeks. Most recently, RTA Audio was updated on October 23, 2026 and STETSOM DSPLAYER AMPLIFIER on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*