# IHSIM vs ENTwise

The clearest difference is in-app purchases: IHSIM at none against ENTwise's 1. IHSIM also leads on iOS requirement (9.3 vs 16.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ENTwise sells 1 one-off in-app purchase. IHSIM asks for nothing beyond the download.

IHSIM ships an update monthly, ENTwise fortnightly. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | IHSIM | ENTwise |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Free | — |
| Size | 5 MB | 6 MB |
| Requires iOS | **9.3** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Hack Audio LLC](https://appshunter.io/developer/1276914003) | [MEHMET ENES ARICI](https://appshunter.io/developer/1876013803) |

## 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


### ENTwise

[App page](https://appshunter.io/ios/app/entwise-medical-board-prep/id6761650907)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ENTwise Premium Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is IHSIM free?

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

### Is ENTwise free?

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

### Do IHSIM or ENTwise have ads?

Neither IHSIM nor ENTwise shows ads.

### Which is updated more often, IHSIM or ENTwise?

IHSIM ships an update monthly, and ENTwise fortnightly. Most recently, IHSIM was updated on November 2, 2026 and ENTwise on November 5, 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.*