# iElastance vs iTIVA Anesthesia Plus

The clearest difference is update cadence: iTIVA Anesthesia Plus at every 2 months against iElastance's every 8 months. iTIVA Anesthesia Plus also leads on iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. iElastance sells 1 in-app purchase, starting at $9.99 per year and iTIVA Anesthesia Plus sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

iElastance ships an update every 8 months, iTIVA Anesthesia Plus every 2 months. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | iElastance | iTIVA Anesthesia Plus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (343 ratings)](https://appshunter.io/ios/app/itiva-anesthesia-plus/id1442975682/reviews)** |
| Number of ratings | — | **343** |
| Positive reviews | — | 72.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | — | Subscription |
| Size | 58 MB | 125 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Pietro Bertini](https://appshunter.io/developer/1769996267) | [ANESTESIARTE CALI SAS](https://appshunter.io/developer/782878902) |

## What reviewers say

### iElastance

[App page](https://appshunter.io/ios/app/ielastance/id556528864)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iElastance Premium | $9.99 | per year |


### iTIVA Anesthesia Plus

[App page](https://appshunter.io/ios/app/itiva-anesthesia-plus/id1442975682)

This app simulates drug concentrations in plasma and optimizes infusion schemes for medical professionals. It offers a comprehensive drug library, target-controlled infusion simulation, and MAC age calculation. Users can explore drug interactions, share cases, and export data.

**Highlights:** Accurate drug concentration estimation, Target Controlled Infusion (TCI) simulation, Comprehensive drug library (28 drugs), Explore drug interactions (70 PK, 10 PD models), MAC Age Calculation, Intraoperative milestones & case sharing, Save and run multiple simulations, Excel data export

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iTIVA yearly | $9.99 | per year |
| iTIVA yearly 2021 | $9.99 | per year |


## Frequently asked questions

### Is iElastance free?

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

### Is iTIVA Anesthesia Plus free?

iTIVA Anesthesia Plus is free to download, with in-app purchases available.

### Do iElastance or iTIVA Anesthesia Plus have ads?

Neither iElastance nor iTIVA Anesthesia Plus shows ads.

### Which is updated more often, iElastance or iTIVA Anesthesia Plus?

iElastance ships an update every 8 months, and iTIVA Anesthesia Plus every 2 months. Most recently, iElastance was updated on October 30, 2026 and iTIVA Anesthesia Plus on October 29, 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.*