# Guide AOD vs Précis de dermatologie

The clearest difference is monetization model: Guide AOD at free against Précis de dermatologie's subscription. Précis de dermatologie's advantage is iOS requirement (16.0 vs 18.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Guide AOD | Précis de dermatologie |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Subscription |
| Size | 3 MB | 808 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [L'Institut universitaire de cardiologie et de pneumologie de Québec (IUCPQ)](https://appshunter.io/developer/576953454) | [Messil inc.](https://appshunter.io/developer/333195172) |

## What reviewers say

### Guide AOD

[App page](https://appshunter.io/ios/app/guide-aod/id983984632)

This medical reference app provides healthcare professionals with practical information on direct oral anticoagulants. It covers indications, dosages, precautions, interactions, and patient management, including useful calculators for risk assessment and renal clearance.

**Highlights:** Direct oral anticoagulant information, Dosage and renal adjustment, Precautions and contraindications, Bleeding management, Peri/post-operative management, Risk assessment calculators

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

**In-app purchases:** none


### Précis de dermatologie

[App page](https://appshunter.io/ios/app/precis-de-dermatologie/id6779140347)

This medical guide aids clinicians in recognizing and understanding skin lesions. It provides a structured diagnostic approach, probable diagnoses, and management recommendations for first-line care, supported by hundreds of clinical illustrations.

**Highlights:** Structured diagnostic approach, Morphology-based recognition, First-line management algorithms, Hundreds of clinical illustrations, Concise, decision-oriented content, Visual learning emphasis

**In-app purchases:** none


## Frequently asked questions

### Is Guide AOD free?

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

### Is Précis de dermatologie free?

Précis de dermatologie is free to download, with no in-app purchases.

### Do Guide AOD or Précis de dermatologie have ads?

Neither Guide AOD nor Précis de dermatologie shows ads.

### Which is updated more often, Guide AOD or Précis de dermatologie?

Guide AOD ships an update every 2 months, and Précis de dermatologie every 2 months. Most recently, Guide AOD was updated on November 1, 2026 and Précis de dermatologie on November 10, 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.*