# iSim Vent vs Impromptu

The clearest difference is rating: Impromptu at 3.0 against iSim Vent's 2.0. Impromptu also leads on update cadence (every 5 days vs every 2 weeks). iSim Vent's advantage is in-app purchases (none vs 3) and ratings volume (8 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Impromptu sells 3 in-app purchases, starting at $3.99 per 7 days. iSim Vent asks for nothing beyond the download.

Impromptu holds the better App Store score, 3.0 against 2.0. That said, the two scores are not equally well evidenced: iSim Vent has 8 ratings behind it against 1, so its average is the more settled of the two.

iSim Vent ships an update every 2 weeks, Impromptu every 5 days. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | iSim Vent | Impromptu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (8 ratings)](https://appshunter.io/ios/app/isim-vent/id1504613564/reviews) | **[3.0 (1 ratings)](https://appshunter.io/ios/app/impromptu-speech-anxiety-help/id6502918007/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 16 MB | 22 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [iSimulate Pty Ltd](https://appshunter.io/developer/494486341) | [Rajesh Budhiraja](https://appshunter.io/developer/1717848628) |

## What reviewers say

### iSim Vent

[App page](https://appshunter.io/ios/app/isim-vent/id1504613564)

This educational tool simulates ventilator operation for healthcare training. It allows educators to test students' ability to set and adjust ventilator parameters, covering functional operations and procedures for patient transport ventilators. It's designed for training purposes only and is not a substitute for professional medical judgment.

**Highlights:** Ventilator integration for training, Stand-alone or integrated simulator, Adjustable breath modes and types, PEEP, tidal volume, and pressure settings, Realistic feedback, Functional operation training

**In-app purchases:** none


### Impromptu

[App page](https://appshunter.io/ios/app/impromptu-speech-anxiety-help/id6502918007)

Practice public speaking and overcome anxiety with this app. It analyzes your recorded answers for filler words, pace, clarity, and structure, providing feedback and a stronger example to help you improve. Prepare for interviews, meetings, presentations, and everyday conversations.

**Highlights:** Speech analysis for filler words, pace, clarity, and structure, Scoring of speaking attempts, Provides stronger example answers, Progress tracking over time, Practice for job interviews, meetings, and presentations, Private, no-account practice environment

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Impromptu Pro | $3.99 | per 7 days |
| Impromptu Pro | $6.99 | per month |
| Impromptu Pro | $34.99 | per year |


## Frequently asked questions

### Is iSim Vent free?

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

### Is Impromptu free?

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

### Which has better reviews, iSim Vent or Impromptu?

Impromptu is rated higher. iSim Vent averages 2.0 out of 5 from 8 ratings, while Impromptu averages 3.0 from 1 ratings.

### Do iSim Vent or Impromptu have ads?

Neither iSim Vent nor Impromptu shows ads.

### Which is updated more often, iSim Vent or Impromptu?

iSim Vent ships an update every 2 weeks, and Impromptu every 5 days. Most recently, iSim Vent was updated on November 3, 2026 and Impromptu on November 11, 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.*