# SoundEngg: RTA Audio Analyzer — Live Sound Spectrum & PA Tools

> Mobile RTA spectrum analyzer, acoustic measurement, and PA system calculator for live sound engineers. (iPhone/iPad app by Sujan Subedi.)

- Source: https://appshunter.io/ios/app/soundengg-rta-audio-analyzer/id6783749210 (this page in markdown: same URL + `.md`)
- Developer: [Sujan Subedi](https://appshunter.io/developer/6783749212)
- Category: Utilities, Entertainment
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 41 MB
- Languages: American English
- Released: 2026-07-25
- Data updated: 2026-10-13
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/soundengg-rta-audio-analyzer/id6783749210/reviews.md

## What is SoundEngg?

Built for live sound engineers, FOH system technicians, monitor mixers, studio engineers, and AV installers, SoundEngg is the all-in-one offline RTA spectrum analyzer, acoustic measurement console, and PA system calculator toolkit.

Whether you are time-aligning delay towers at an outdoor festival, designing a cardioid subwoofer array, ringing out stage monitors, or verifying amplifier impedance loads, SoundEngg replaces a rack of hardware utilities with a rugged, zero-latency mobile workstation.

1. REAL-TIME RTA SPECTRUM ANALYZER & TRANSFER FUNCTION CONSOLE
• 60FPS Real-Time Analyzer (RTA) with 1/1, 1/3, 1/6, 1/12, and 1/24 octave fractional resolution and high-resolution FFT spectrum analysis.
• Live Transfer Function engine displaying Magnitude, Phasedeg, and Coherence traces for PA system tuning and crossover alignment.
• 3D Waterfall Spectrogram for spotting room resonance decay, acoustic reflections, and live feedback frequencies.
• Multi-Trace Snapshot Memory: Capture, store, and overlay up to 4 reference measurement curves (Traces A, B, C, D) to compare FOH and venue zones.
• Custom Microphone Calibration Loader: Import standard .CAL and .TXT mic calibration files for lab-grade measurement accuracy.

2. SPEAKER DELAY & ACOUSTIC PULSE ALIGNMENT CALCULATOR
• Compute exact delay tower and fill speaker alignment in milliseconds (ms), meters (m), feet (ft), and 48kHz / 96kHz DSP sample offsets.
• Real-time speed-of-sound compensation using live venue temperature and relative humidity.
• Acoustic Pulse Delay Finder: Measure speaker arrival time down to 0.05 ms and export a sample-accurate 48kHz Alignment Click (.WAV) track.
• One-tap FOH Alignment Share Card export for sharing DSP delay specs with your system crew.

3. SUBWOOFER ARRAY & CARDIOID DISPERSION CALCULATOR
• Design directional bass arrays to keep low-end energy off the stage and focused on the audience.
• Supports End-Fire Arrays, Gradient Cardioid (CSA), L-Acoustics Cardioid, and d&b Cardioid Subwoofer Array presets.
• Interactive 2D Polar Dispersion Map with real-time stage cancellation (dB), physical cabinet spacing, rear DSP delay, and polarity inversion readouts.

4. SPEAKER IMPEDANCE, OHM & AMPLIFIER POWER CALCULATOR
• Calculate total load impedance (Ohms) and power distribution for Parallel, Series, and Series-Parallel speaker cabinet wiring.
• Automatic amplifier headroom safety analysis and per-cabinet Watt (RMS) delivery calculation.

5. REFERENCE AUDIO SIGNAL & TONE GENERATOR
• Precision Sine Wave frequency generator (20 Hz – 20 kHz) with interactive logarithmic sweep, fine Hz stepping, and musical note locking.
• Calibrated Pink Noise, White Noise, and Polarity Pulse generator for PA system eq tuning and speaker phase checks.

6. 1/6 OCTAVE ISO EAR TRAINING LAB
• Train your ears to identify surgical EQ boosts and cuts across Octave, 1/3 Octave, and pro 1/6 Octave ISO frequency bands.
• Practice with Pink Noise or load custom reference audio tracks with instant Dry/Processed A/B comparison.

7. TAP TEMPO BPM & FX DELAY SUBDIVISION CALCULATOR
• Rolling-average BPM tap detector with instant millisecond readouts for Quarter (1/4), Dotted, and Triplet delay subdivisions.

8. OFFLINE AUDIO PINOUT DATABASE & 100+ SYSTEM ENGINEERING GUIDES
• Field wiring diagrams for XLR, Neutrik SpeakON (NL2/NL4/NL8), RJ45 Dante/AES67, PowerCON, TRS, RCA, and DB25 D-Sub.
• 100+ in-depth live sound engineering guides covering line array physics, RF coordination, digital mixing consoles, and gain staging.

100% Offline-Ready on Show Site. Try SoundEngg Pro free with our 7-Day Free Trial!

Terms of Use (EULA): https://www.soundengg.com/terms.html
Privacy Policy: https://www.soundengg.com/privacy.html

## Key features

- Real-time RTA spectrum analyzer
- Transfer function console
- Speaker delay and alignment calculator
- Subwoofer array and dispersion calculator
- Speaker impedance and power calculator
- Tone generator
- Ear training lab

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| SoundEngg Pro Monthly | $1.99 | per month |
| SoundEngg Pro Yearly | $19.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| SoundEngg Pro Lifetime | $34.99 | one-time |


## Is SoundEngg safe?

Not enough ratings yet to assess SoundEngg.

## Is SoundEngg legit?

SoundEngg: RTA Audio Analyzer has limited verification signals. The AppsHunter Legitimacy Score for SoundEngg is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/soundengg-rta-audio-analyzer/id6783749210/reviews.md

### 5/5 — Good app

*2026-10-02*

Really useful for RTA

## Frequently asked questions about SoundEngg

### What is SoundEngg?

SoundEngg is a mobile application designed for live sound engineers, offering real-time RTA spectrum analysis, acoustic measurement capabilities, and PA system calculation tools. It aims to consolidate multiple hardware utilities into a single, zero-latency mobile workstation.

### Does SoundEngg have ads?

Yes, SoundEngg contains advertisements. As a free application with in-app purchases, advertisements are displayed to support its development and availability.

### What are the subscription options for SoundEngg?

SoundEngg offers two subscription plans: SoundEngg Pro Monthly for $1.99 and SoundEngg Pro Yearly for $19.99. These subscriptions likely unlock additional features or remove ads.

### What devices is SoundEngg compatible with?

SoundEngg is supported on iPhone, iPad, and iPod devices. It is designed to run on iOS platforms.

### How accurate is the RTA analysis in SoundEngg?

The RTA spectrum analyzer offers 60FPS real-time analysis with fractional resolutions from 1/1 to 1/24 octave, alongside high-resolution FFT. It also supports custom microphone calibration files for enhanced accuracy.

### Can SoundEngg help with speaker alignment?

Yes, SoundEngg includes a speaker delay and acoustic pulse alignment calculator. It can compute precise delay times in milliseconds, meters, feet, and DSP sample offsets, with real-time speed-of-sound compensation.

### What kind of audio signals can SoundEngg generate?

SoundEngg features a precision sine wave frequency generator from 20 Hz to 20 kHz, logarithmic sweeps, and musical note locking. It also provides calibrated Pink Noise, White Noise, and Polarity Pulse generators for system tuning.

### How often is SoundEngg updated?

The latest version of SoundEngg was released on October 11, 2026. While specific update frequency isn't detailed, this indicates ongoing development and support for the application.

## Version history (last 5 releases)

### 1.2.1 — 2026-10-11

What's New in SoundEngg v1.2.1:

• 7-Day Free Trial for SoundEngg Pro: Unlock the complete FOH acoustic measurement workstation—including the 60FPS 3D Waterfall Spectrogram, Multi-Trace Snapshot Overlays, Custom Mic Calibration (.CAL/.TXT), and 1/6-Octave Ear Training—free for 7 days.
• Instant FOH Alignment Share Cards & System Reports: Export and share high-resolution FOH Alignment Cards and DSP setup specs (Delay Tower, Cardioid & End-Fire Subwoofer Arrays, Speaker Impedance & Amplifier Power, and Tap Tempo subdivisions) via the native Share Sheet.
• 48kHz Acoustic Alignment Click (.WAV) Export: Generate and export sample-accurate 48kHz WAV transient click tracks for fast PA and delay tower time alignment.
• Fullscreen Landscape RTA & Transfer Function Enhancements: Faster audio session routing, multi-trace coherence/phase overlays, and smoother 60FPS spectrum rendering on iPhone and iPad.
• Store checkout improvements, faster cold-start launch, and offline reliability updates.

### 1.1.19 — 2026-09-03

• 100% Offline Asset Engine: All technical icons, measurement curves, and typography are now bundled locally for instantaneous, zero-latency cold launches without requiring internet access.
• iPad & Tablet Adaptive Views: Enhanced full-width responsive layouts with optimized toolbar scaling and split-screen multitasking support.
• Audio Session Routing: Updated low-latency iOS audio session management with full support for high-fidelity Bluetooth (A2DP) monitoring and external USB-C / Lightning interfaces.
• Seamless Tool Navigation: Optimized navigation transitions and improved ad pacing across all acoustic calculators and RTA measurement engines.
• 10 New Pro Audio Masterclasses: Deep-dive technical guides added for Milan AVB vs Dante, Yamaha DM7, Smaart phase alignment, and RF spectrum coordination.
• Stability & Performance: Bug fixes, memory optimizations, and enhanced App Tracking Transparency (ATT) integration.

### 1.1.18 — 2026-09-01

• 100% Offline Asset Engine: All icons, measurement curves, and typography are now fully bundled locally for instant, zero-latency cold launches even in underground venues with no cellular coverage.
• Enhanced Audio Session Routing: Updated low-latency iOS audio session management with full support for high-fidelity Bluetooth (A2DP) monitoring and external USB-C / Lightning audio interfaces.
• Refined Tool Navigation: Smoother transitions and optimized pacing when switching between RTA analysis, delay alignment, and subwoofer calculations.
• 10 New Pro Audio Masterclasses: Added deep-dive technical guides covering Milan AVB vs Dante, Yamaha DM7 routing, Smaart transfer function phase alignment, and WWB7 RF coordination.
• Stability & UI Polish: Minor bug fixes and layout optimizations for iOS 17, iOS 18, and iPadOS split-screen multitasking.

### 1.1.17 — 2026-08-25

• Optimized 60fps RTA spectrum analyzer engine for lower latency.
• Enhanced console experience for iPad and Apple Silicon Mac (M1/M2/M3/M4).
• Improved acoustic delay & subwoofer spacing calculator precision.
• General performance optimizations and stability improvements.

### 1.1.15 — 2026-08-18

• Enhanced RTA visualizer with adaptive frequency display.
• Direct in-app access to Privacy Policy and Terms of Service.
• Audio engine optimizations, faster ad loading, and stability fixes.

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## More apps by Sujan Subedi

- [PrismFlow: Zen Color Match](https://appshunter.io/ios/app/prismflow-zen-color-match/id6804986907)

All apps by Sujan Subedi: https://appshunter.io/developer/6783749212

## Related topics

[smaart rta](https://appshunter.io/ios/topics/smaart-rta) · [dftm audio tools](https://appshunter.io/ios/topics/dftm-audio-tools)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-13.*