# LARSA Analyzer — Loudspeaker and Room Analyzer

> Mobile impulse response measurement and analysis tool for audio systems. (iPhone/iPad app by Andrew Smith.)

- Source: https://appshunter.io/ios/app/larsa-analyzer/id943103573 (this page in markdown: same URL + `.md`)
- Developer: [Andrew Smith](https://appshunter.io/developer/291822462)
- Category: Music, Utilities
- Price: $29.99 with in-app purchases
- Rating: 4.30/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 40 MB
- Languages: American English, French (France), German (Germany), Japanese, Polish, Chinese (Simplified, China), European Spanish, Swedish
- Released: 2015-01-15
- Data updated: 2026-08-01
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/larsa-analyzer/id943103573/reviews.md

## What is LARSA Analyzer?

LARSA, or Loudspeaker And Room System Analyzer, is a powerful impulse response measurement and analysis tool. It is ideally suited for measuring loudspeakers in rooms, multi-speaker setups, car audio systems, home theater systems or larger, installed loudspeaker systems.

It is an easy way to profile a system and give you the information you need to equalize or tune your loudspeakers for the best possible performance in your listening space. LARSA brings measurement power and convenience previously available only on desktop computers.

Key Features of LARSA include:
* Easy-to-learn single-tap recording of an impulse response. 
* IR averaging features. Perform test/re-test analyses of measurements or a make a spatial average. 
* IR windowing features.
* Energy Time Curves.
* Delay time calculation for time-alignment in bi- and tri-amp applications.
* Save and recall functionality.
* Full iCloud support for easy access to your measurements on your desktop or laptop.

## Key features

- Impulse response measurement
- IR averaging
- IR windowing
- Energy Time Curves
- Delay time calculation
- Save and recall measurements
- iCloud support

## Pricing and in-app purchases

Base price: $29.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Filter Design Option | $9.99 | one-time |


## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/larsa-analyzer/id943103573/reviews.md

### 3/5 — Just quirky and buggy

*2023-04-16*

I can get measurements with this, with a mic and interface or without.  3 stars

I purchased the filter designer for 10, and its not effective.  It won’t stay licensed, constantly having to reauthorize the purchase.  It forgets my pref settings…. Worthless really.

The 3d graphic is terribly twitchy, hard to manipulate to make observations.

I’ve deleted and reinstalled, but the application just seems as though it is a wuirky, buggy thing.

All in all, not sure this is the greatest option.

### 5/5 — Grandpa3782

*2015-04-17*

Did a great job of measuring and graphing frequency response with no complications or other equipment. Glad I spent $30 on this.

## Frequently asked questions about LARSA Analyzer

### What is LARSA Analyzer used for?

LARSA Analyzer is used for measuring and analyzing the impulse response of audio systems, including loudspeakers, car audio, and home theaters. It helps users tune their systems for the best sound quality in their listening space.

### How much does LARSA Analyzer cost?

LARSA Analyzer is a paid application priced at $29.99. This one-time purchase grants you access to all its measurement and analysis features.

### What devices does LARSA Analyzer support?

LARSA Analyzer is available for iPhone, iPad, and iPod touch devices. It is designed to bring powerful audio analysis capabilities to your Apple mobile devices.

### How often is LARSA Analyzer updated?

The latest version of LARSA Analyzer is 3.9, and it was last updated on December 22, 2025. This indicates a commitment to ongoing development and improvements.

### Can I use LARSA Analyzer offline?

While the description doesn't explicitly state offline functionality, the core measurement and analysis features are likely to function without an internet connection. iCloud support is for syncing measurements.

### What are the key analysis features in LARSA Analyzer?

Key features include impulse response recording, averaging, windowing, Energy Time Curves, and delay time calculation for time-alignment in multi-amp setups.

### Does LARSA Analyzer have ads?

No, LARSA Analyzer does not contain advertisements. As a paid application, it provides an ad-free experience for its users.

### How does LARSA Analyzer compare to desktop software?

LARSA Analyzer brings measurement power and convenience previously only available on desktop computers to your mobile device, allowing for on-the-go system profiling and tuning.

## Version history (last 5 releases)

### 3.9 — 2025-12-22

-Bug fixes and stability improvements

### 3.8 — 2025-12-01

-Fixed possible crash when running in delay mode without a delay signal

### 3.7 — 2025-11-24

-Updated for new iOS devices
-Bug fixes and stability improvements

### 3.6 — 2024-11-20

-Updated for latest iOS devices and calibrations
-Bug fixes and operational improvements

### 3.5 — 2024-07-10

-Updated for latest iOS devices and calibrations
-Bug fixes and operational improvements

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## More apps by Andrew Smith

- [Speaker Polarity](https://appshunter.io/ios/app/speaker-polarity/id293263027)
- [SPL](https://appshunter.io/ios/app/spl/id293573990)
- [RTA](https://appshunter.io/ios/app/rta/id298839433)
- [FFT](https://appshunter.io/ios/app/fft/id298840058)
- [RT60](https://appshunter.io/ios/app/rt60/id298840320)
- [Generator](https://appshunter.io/ios/app/generator/id298840802)

All apps by Andrew Smith: https://appshunter.io/developer/291822462

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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 2026-08-01.*