Comparison

Lanthier vs CHIR+

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lanthier

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
Read full description

“Lanthier” is an internal medicine app based on the seventh edition of the bestselling pocketbook. Completely re-imagined for iOS, this app will allow any physician, resident or medical student to access up-to-date medical information and guidelines quickly and efficiently. Free 7 days trial subscription! “Lanthier Practical Guide to Internal Medicine is a good choice for an app to replace your pocketbook. Beyond providing quality content with references, it has an excellent design that makes it more than just a digitized version of a book. Finding clinically relevant information about a condition is quick and easy.” iMedicalApp.com — FEATURES — • Concise: edited to be useful at the bedside. • Fast: advanced search function, intuitive menus. • Direct link to the references on PubMed and now through Read by QxMD (internet connection required). Build your paper collection using articles selected by Dr Lanthier himself. • MedCalX integration (sold separately): for quick access to the trusted medical calculator. • Take personal notes within the topics and synchronize them across your iOS devices. Perfect for studying for board exams! — TOPICS — Cardiology Dermatology (new) Endocrinology Gastroenterology General Internal Medicine Hematology Infectious Diseases Nephrology Neurology Oncology Pneumology Rheumatology — ABOUT THE LEAD AUTHORS — Dr Luc Lanthier practices General Internal Medicine at the Sherbrooke University Hospital Center and is a Professor of Medicine at the Faculty of Medicine and Health Sciences of the University of Sherbrooke. He is former chair of the French Examination Board for Internal Medicine Exam at the Royal College of Physicians and Surgeons of Canada. Dr Donald Echenberg practices General Internal Medicine at the Sherbrooke University Hospital Center and is an Associate Professor of Medicine at the Faculty of Medicine and Health Sciences of the University of Sherbrooke. He is past president of the Canadian Society of Internal Medicine and is currently Governor of the Quebec Chapter of the American College of Physicians. — DISCLAIMER — This publication (application) is to be used as a guide only. It is intended only for use by licensed medical practitioners and medical students. Every doctor (or prescriber) is responsible for their actions. Therapeutic options presented in this guide reflect current approaches and guidelines in the field of internal medicine. Content has been peer reviewed by leading experts in their respective fields. The authors of Lanthier - Practical Guide to Internal Medicine shall not be liable for any injury and/or damage to persons or property arising from the use of this application. This guide is not meant to replace clinical judgment. It is the responsibility of the licensed prescriber to verify the indications, contraindications and dosage of the medication (and actions) they prescribe. — ABOUT SUBSCRIPTION — Lanthier - Internal Medicine is offered as a subscription service, renewed automatically. Payment will be charged to iTunes Account at confirmation of purchase. The subscription will automatically renew unless auto-renew is turned off at least 24-hours before the end of the current period. The iTunes Account will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the application «Settings» section and tapping «Manage Subscriptions» after purchase. For more information on Terms of Use visit https://lanthiermed.com/terms-of-use

About

CHIR+

Features
Read full description

Vous êtes interne, jeune docteur, chef de clinique… : cette application apporte des informations, conseils et outils utiles dans la pratique quotidienne en insistant sur le rôle du chirurgien durant la phase préopératoire, sa participation aux nouveaux parcours de soins, son rôle dans la gestion des risques au bloc opératoire et durant la phase post-opératoire et sa place au sein de l’équipe de soins. CHIR+, application complémentaire du guide imprimé Tout ce que vous devez savoir avant, pendant et après la chirurgie édité par John Libbey Eurotext et réalisé avec le soutien institutionnel de Sanofi, est destinée aux chirurgiens en formation et confirmés. Vous trouverez dans cette application : • des recommandations pour acquérir les compétences non techniques - non-technical skills - nécessaires au bon déroulement des temps péri-opératoires ; • tout ce qu’il faut savoir en pré-, per- et post-op : la communication thérapeutique, l’évaluation du patient, la check-list de sécurité au bloc, la place du robot, la surveillance post-opératoire, la sortie de l’hôpital ; • des outils et conseils ; • des quiz pour s’auto-évaluer. CHIR+ est un outil indispensable.

Screenshots

Lanthier4 screens
CHIR+4 screens

Verdict

The call

The clearest difference is in-app purchases: CHIR+ at none against Lanthier's 2. CHIR+ also leads on update cadence (weekly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lanthier sells 2 in-app purchases, starting at $19.49 per year. CHIR+ asks for nothing beyond the download.

UpkeepUpdate frequency

Lanthier ships an update every 2 months, CHIR+ weekly. The most recent releases landed on September 28, 2026 and September 30, 2026 respectively.

Scorecard2 real differences · 8 level
Lanthier versus CHIR+: the parameters behind the verdict, then further details
ParameterLanthierCHIR+
PriceFreeFree
Rating3.8 (5 ratings) — better—
Positive reviews61.9% of reviews—
Number of ratings5 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size70 MB7 MB
Age rating17+17+
DeveloperLes Éditions Formed inc.John Libbey Eurotext

In-app purchases

2 purchases

Lanthier

Subscriptions2
  • Lanthier - current users3 Months trial$19.491 Year
  • Lanthier - new users7 Days trial$19.491 Year
None

CHIR+

No in-app purchases

Questions

Is Lanthier free?
Lanthier is free to download, with in-app purchases available.
Is CHIR+ free?
CHIR+ is free to download, with no in-app purchases.
Do Lanthier or CHIR+ have ads?
Neither Lanthier nor CHIR+ shows ads.
Which is updated more often, Lanthier or CHIR+?
Lanthier ships an update every 2 months, and CHIR+ weekly. Most recently, Lanthier was updated on September 28, 2026 and CHIR+ on September 30, 2026.

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