# IHSIM vs Clouds Flashcards

The clearest difference is in-app purchases: IHSIM at none against Clouds Flashcards's 1. IHSIM also leads on iOS requirement (9.3 vs 13.4). Clouds Flashcards's advantage is update cadence (every 4 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Clouds Flashcards sells 1 in-app purchase, starting at $1.99 per month. IHSIM asks for nothing beyond the download.

IHSIM ships an update monthly, Clouds Flashcards every 4 days. The most recent releases landed on September 29, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | IHSIM | Clouds Flashcards |
| --- | --- | --- |
| 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 | **Every 4 days** |
| Monetization | Free | — |
| Size | 5 MB | 35 MB |
| Requires iOS | **9.3** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hack Audio LLC](https://appshunter.io/developer/1276914003) | [Robert Rathbone](https://appshunter.io/developer/1612332986) |

## 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


### Clouds Flashcards

[App page](https://appshunter.io/ios/app/clouds-flashcards/id6475796199)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |


## Frequently asked questions

### Is IHSIM free?

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

### Is Clouds Flashcards free?

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

### Do IHSIM or Clouds Flashcards have ads?

Neither IHSIM nor Clouds Flashcards shows ads.

### Which is updated more often, IHSIM or Clouds Flashcards?

IHSIM ships an update monthly, and Clouds Flashcards every 4 days. Most recently, IHSIM was updated on September 29, 2026 and Clouds Flashcards on September 30, 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.*