# IHSIM vs ASL Signcaster

The clearest difference is iOS requirement: IHSIM at 9.3 against ASL Signcaster's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

IHSIM ships an update monthly, ASL Signcaster fortnightly. The most recent releases landed on October 14, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | IHSIM | ASL Signcaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (3 ratings)](https://appshunter.io/ios/app/ihsim/id1421965944/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | — |
| Size | 5 MB | 481 MB |
| Requires iOS | **9.3** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hack Audio LLC](https://appshunter.io/developer/1276914003) | [Brittany Mclaughlin](https://appshunter.io/developer/1141724296) |

## What reviewers say

### IHSIM

[App page](https://appshunter.io/ios/app/ihsim/id1421965944)

This application simulates acoustic hearing loss and cochlear implant processing in real-time. It allows for custom spectral filtering based on audiograms and offers various cochlear implant simulation parameters. Designed for research and education, it helps users understand auditory perception.

**Highlights:** Acoustic hearing loss simulation, Cochlear implant simulation, Custom spectral filtering, Filterbank vocoder, Binaural stimulation options, Research and educational use

**Features:** macOS Compatibility

**In-app purchases:** none


### ASL Signcaster

[App page](https://appshunter.io/ios/app/asl-signcaster/id6761390636)

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

**In-app purchases:** none


## Frequently asked questions

### Is IHSIM free?

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

### Is ASL Signcaster free?

ASL Signcaster is free to download, with no in-app purchases.

### Do IHSIM or ASL Signcaster have ads?

Neither IHSIM nor ASL Signcaster shows ads.

### Which is updated more often, IHSIM or ASL Signcaster?

IHSIM ships an update monthly, and ASL Signcaster fortnightly. Most recently, IHSIM was updated on October 14, 2026 and ASL Signcaster on October 28, 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.*