# Impulso Architect vs IsoCal

The clearest difference is price: Impulso Architect at Free against IsoCal's $14.99. Impulso Architect also leads on iOS requirement (12.0 vs 15.1). IsoCal's advantage is rating (5.0 vs 1.0). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Impulso Architect is free to download; IsoCal costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

IsoCal holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Impulso Architect ships an update every 4 months, IsoCal every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Impulso Architect | IsoCal |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/impulso-architect/id1200093963/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/isocal/id1645551092/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Size | 25 MB | 45 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Artnovion LDA](https://appshunter.io/developer/991324136) | [Emil Aerenlund](https://appshunter.io/developer/1645551094) |

## What reviewers say

### Impulso Architect

[App page](https://appshunter.io/ios/app/impulso-architect/id1200093963)

Measure the acoustic response of your room using your iPhone. Analyze reverberation time in key octave bands and simulate how to achieve target acoustics with specific product catalogs. Supports internal or external microphones and impulse sources.

**Highlights:** Acoustic response measurement, Reverberation time analysis (500Hz-2kHz), Room dimension input, Target RT calculation, Product catalog simulation, Internal/external microphone support

**Features:** Vision Pro support

**In-app purchases:** none


### IsoCal

[App page](https://appshunter.io/ios/app/isocal/id1645551092)

This tool helps calculate the sound reduction index for various wall constructions, including single, double, and multi-leaf walls. It offers a catalog of materials and allows users to add their own for designing optimal soundproofing. The app also includes a calculator for predicting absorption coefficients of porous materials.

**Highlights:** Sound reduction index calculation, Single, double, and multi-leaf wall design, Material catalog and custom material input, Porous material absorption coefficient calculator, Cavity and boundary connection design

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

**In-app purchases:** none


## Frequently asked questions

### Is Impulso Architect free?

Impulso Architect is free to download, with no in-app purchases.

### Is IsoCal free?

IsoCal costs $14.99, with no in-app purchases.

### Which has better reviews, Impulso Architect or IsoCal?

IsoCal is rated higher. Impulso Architect averages 1.0 out of 5 from 2 ratings, while IsoCal averages 5.0 from 1 ratings.

### Do Impulso Architect or IsoCal have ads?

Neither Impulso Architect nor IsoCal shows ads.

### Which is updated more often, Impulso Architect or IsoCal?

Impulso Architect ships an update every 4 months, and IsoCal every 2 months. Most recently, Impulso Architect was updated on November 2, 2026 and IsoCal on November 3, 2026.

---

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