# Lanthier vs SURF

The clearest difference is update cadence: Lanthier at every 2 months against SURF's every 5 months. On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Lanthier sells 2 in-app purchases, starting at $19.49 per year and SURF sells 1 in-app purchase, starting at $99.99 per year. Whichever you choose, the download price is not the number that matters.

Lanthier ships an update every 2 months, SURF every 5 months. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Lanthier | SURF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (5 ratings)](https://appshunter.io/ios/app/lanthier/id701664895/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 61.9% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Subscription | Subscription |
| Size | 70 MB | 204 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Les Éditions Formed inc.](https://appshunter.io/developer/442932971) | [Philippe FURGER](https://appshunter.io/developer/1055742280) |

## What reviewers say

### 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 |


### SURF

[App page](https://appshunter.io/ios/app/surf/id1055743301)

Access evidence-based medical content for internal medicine, differential diagnosis, and lab values. This comprehensive guide is designed for residents, general practitioners, and specialists, offering a vast amount of information from multiple expert-authored books.

**Highlights:** Evidence-based medical content, Differential diagnosis of symptoms, Lab value interpretation, Comprehensive internal medicine, Links to external calculators, Accessible on multiple devices

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 year | $99.99 | per year |


## Frequently asked questions

### Is Lanthier free?

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

### Is SURF free?

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

### Do Lanthier or SURF have ads?

Neither Lanthier nor SURF shows ads.

### Which is updated more often, Lanthier or SURF?

Lanthier ships an update every 2 months, and SURF every 5 months. Most recently, Lanthier was updated on October 14, 2026 and SURF on October 9, 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.*