# Guide Rx Critiques vs Lanthier

The clearest difference is review sentiment: Lanthier at 62% against Guide Rx Critiques's 19%. Lanthier also leads on update cadence (every 2 months vs every 6 months). Guide Rx Critiques's advantage is monetization model (free with in-app purchases vs subscription) and iOS requirement (12.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Guide Rx Critiques sells 1 in-app purchase, starting at $9.99 per year and Lanthier sells 2 in-app purchases, starting at $19.49 per year. Whichever you choose, the download price is not the number that matters.

Guide Rx Critiques ships an update every 6 months, Lanthier every 2 months. The most recent releases landed on September 30, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Guide Rx Critiques | Lanthier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (5 ratings)](https://appshunter.io/ios/app/lanthier/id701664895/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 19.0% of reviews | **61.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 55 MB | 70 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [L'Institut universitaire de cardiologie et de pneumologie de Québec (IUCPQ)](https://appshunter.io/developer/576953454) | [Les Éditions Formed inc.](https://appshunter.io/developer/442932971) |

## What reviewers say

### Guide Rx Critiques

[App page](https://appshunter.io/ios/app/guide-rx-critiques/id580149889)

This app provides a practical reference for healthcare professionals administering critical intravenous medications. It includes information on classification, action, indications, dosages, stability, and compatibility for approximately sixty commonly used drugs in critical care. A free version offers reduced content, with a full subscription unlocking all features and updates.

**Highlights:** Critical care medication reference, Drug classification and action, Dosage and presentation information, Stability and compatibility data, Perfusion tables, Full guide subscription

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abonnement au guide complet | $9.99 | per year |


### Lanthier

[App page](https://appshunter.io/ios/app/lanthier/id701664895)

Access up-to-date internal medicine information and guidelines quickly and efficiently. This app offers a fast search function, intuitive menus, and direct links to PubMed references. It's designed for physicians, residents, and medical students to use at the bedside.

**Highlights:** Concise bedside information, Advanced search function, Intuitive menus, Direct links to PubMed, Personal note-taking, Cross-device synchronization

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lanthier - current users | $19.49 | per year |
| Lanthier - new users | $19.49 | per year |


## Frequently asked questions

### Is Guide Rx Critiques free?

Guide Rx Critiques is free to download, with in-app purchases available.

### Is Lanthier free?

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

### Do Guide Rx Critiques or Lanthier have ads?

Neither Guide Rx Critiques nor Lanthier shows ads.

### Which is updated more often, Guide Rx Critiques or Lanthier?

Guide Rx Critiques ships an update every 6 months, and Lanthier every 2 months. Most recently, Guide Rx Critiques was updated on September 30, 2026 and Lanthier on September 28, 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.*