# iTIVA Anesthesia vs ASRA Coags

The clearest difference is review sentiment: iTIVA Anesthesia at 90% against ASRA Coags's 9%. iTIVA Anesthesia also leads on rating (4.6 vs 1.3) and iOS requirement (9.0 vs 13.4). ASRA Coags's advantage is in-app purchases (none vs 1) and ratings volume (414 vs 45). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. iTIVA Anesthesia sells 1 one-off in-app purchase. ASRA Coags asks for nothing beyond the download.

iTIVA Anesthesia holds the better App Store score, 4.6 against 1.3. That said, the two scores are not equally well evidenced: ASRA Coags has 414 ratings behind it against 45, so its average is the more settled of the two. Written reviews point the same way: 90% of iTIVA Anesthesia's written reviews are positive against 9% of ASRA Coags's.

Both ship on a similar rhythm, roughly every 3 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | iTIVA Anesthesia | ASRA Coags |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (45 ratings)](https://appshunter.io/ios/app/itiva-anesthesia/id635652167/reviews)** | [1.3 (414 ratings)](https://appshunter.io/ios/app/asra-coags/id858796572/reviews) |
| Number of ratings | 45 | **414** |
| Positive reviews | **90.5% of reviews** | 8.9% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | **Free** | Subscription |
| Size | 29 MB | 27 MB |
| Requires iOS | **9.0** | 13.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [ANESTESIARTE CALI SAS](https://appshunter.io/developer/782878902) | [American Society of Regional Anesthesia and Pain Medicine](https://appshunter.io/developer/858796575) |

## What reviewers say

### iTIVA Anesthesia

[App page](https://appshunter.io/ios/app/itiva-anesthesia/id635652167)

This medical simulation app models drug distribution and TCI pump behavior for intravenous anesthesia. It helps users understand pharmacokinetics and calculate infusion rates based on various mathematical and pharmacokinetic models. Designed for educational purposes, it allows for up to three drug simulations simultaneously.

**Highlights:** TCI pump simulation, Drug distribution modeling, Pharmacokinetic models, Infusion rate calculation, Up to 3 drugs simultaneously, End tidal gas calculation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| iTiva Pro | $9.99 | one-time |


### ASRA Coags

[App page](https://appshunter.io/ios/app/asra-coags/id858796572)

This app provides quick access to anticoagulation guidelines for regional anesthesia and interventional pain procedures. It offers drug-specific summaries, recommendations based on procedure type, and detailed information on medication mechanisms and guideline documents.

**Highlights:** Anticoagulation guideline reference, Drug-specific summary information, Regional anesthesia guidelines, Interventional pain guidelines, Search by drug or procedure, Recommendations by block and intervention type

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iTIVA Anesthesia free?

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

### Is ASRA Coags free?

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

### Which has better reviews, iTIVA Anesthesia or ASRA Coags?

iTIVA Anesthesia is rated higher. iTIVA Anesthesia averages 4.6 out of 5 from 45 ratings, while ASRA Coags averages 1.3 from 414 ratings.

### Do iTIVA Anesthesia or ASRA Coags have ads?

Neither iTIVA Anesthesia nor ASRA Coags shows ads.

### Which is updated more often, iTIVA Anesthesia or ASRA Coags?

iTIVA Anesthesia ships an update every 3 months, and ASRA Coags every 3 months. Most recently, iTIVA Anesthesia was updated on November 1, 2026 and ASRA Coags on November 1, 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.*