# IsoCal vs amscan

The clearest difference is price: amscan at Free against IsoCal's $14.99. amscan also leads on update cadence (every 11 days vs every 2 months). IsoCal's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 2). On ratings volume, ads and device support there is nothing between them.

amscan is free to download; IsoCal costs $14.99 up front. amscan sells 2 one-off in-app purchases. IsoCal asks for nothing beyond the download.

IsoCal holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

IsoCal ships an update every 2 months, amscan every 11 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | IsoCal | amscan |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/isocal/id1645551092/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/amscan/id6749589715/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 45 MB | 20 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Emil Aerenlund](https://appshunter.io/developer/1645551094) | [Dariush Majidi](https://appshunter.io/developer/1740614809) |

## What reviewers say

### 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


### amscan

[App page](https://appshunter.io/ios/app/amscan/id6749589715)

Visualize room modes in 3D using LiDAR scanning. Capture room geometry to instantly calculate acoustic modes, aiding in sound design and optimization for audiophiles and professionals. Offers free basic calculations with an in-app purchase for advanced modes.

**Highlights:** LiDAR room scanning, 3D room mode visualization, Automatic 3D model creation, Augmented Reality mode visualization, Basic acoustic data (RT60, Schroeder Freq, Volume), Unlimited room scanning

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simulation Geometry | $3.99 | one-time |
| Additional Room Modes | $6.99 | one-time |


## Frequently asked questions

### Is IsoCal free?

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

### Is amscan free?

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

### Which has better reviews, IsoCal or amscan?

IsoCal is rated higher. IsoCal averages 5.0 out of 5 from 1 ratings, while amscan averages 4.0 from 2 ratings.

### Do IsoCal or amscan have ads?

Neither IsoCal nor amscan shows ads.

### Which is updated more often, IsoCal or amscan?

IsoCal ships an update every 2 months, and amscan every 11 days. Most recently, IsoCal was updated on October 7, 2026 and amscan on October 9, 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.*