Lytes vs Lanthier
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lytes
Provides quick, at-your-fingertips information on the causes, symptoms, diagnosis, and treatment of electrolyte disorders. Features an intuitive interface for rapid access to practical medical knowledge, including references to PubMed.
- Causes, signs, diagnosis, and treatment of electrolyte disorders
- Intuitive single-screen interface
- 50 pages of practical medical information
- Resume reading where you left off
- PubMed reference links
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Ah, electrolytes... They always seem to be too high or too low. But it's your job to get them back in line. Enter Lytes, the program that provides quick, at-your-fingertips information about the causes, symptoms, diagnosis, and treatment of electrolyte disorders. Our Lytes Selection Dial lets you drill down to the info you need within seconds. Features: • See causes, signs, diagnosis, and treatment with a flick of the thumb • Intuitive single screen interface keeps things straighforward • 50 pages of practical info for the wards • Lytes remembers where you left off when you return • All disorders provided with a reference section with links to PubMed ********************************** If you like the program please rate it. If you have any concerns or find any bugs please contact us at support@freeradicalsoft.com DISCLAIMER: Please consider that information provided by this program is intended to supplement but not substitute for the expertise and clinical judgment of a healthcare professional. The educational material is provided as is, and Free Radical does not warrant that it is accurate or up to date, although that is certainly our goal.
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.
- Concise bedside information
- Advanced search function
- Intuitive menus
- Direct links to PubMed
- Personal note-taking
- Cross-device synchronization
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“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
Screenshots
Verdict
The clearest difference is price: Lanthier at Free against Lytes's $2.99. Lytes's advantage is rating (4.8 vs 3.8) and in-app purchases (none vs 2). On review sentiment, ratings volume, update cadence and ads 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
Lanthier is free to download; Lytes costs $2.99 up front. Lanthier sells 2 in-app purchases, starting at $19.49 per year. Lytes asks for nothing beyond the download.
Lytes holds the better App Store score, 4.8 against 3.8. Both are backed by a comparable volume of ratings — 10 and 5 respectively. Written reviews point the same way: 67% of Lytes's written reviews are positive against 62% of Lanthier's.
Lytes ships an update every 3 months, Lanthier every 2 months. The most recent releases landed on September 30, 2026 and October 14, 2026 respectively.
| Parameter | Lytes | Lanthier |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.8 (10 ratings) — better | 3.8 (5 ratings) |
| Positive reviews | 66.7% of reviews — better | 61.9% of reviews |
| Number of ratings | 10 — better | 5 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid — better | Subscription |
| Best chart rank | #200 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 1 MB | 70 MB |
| Age rating | 17+ | 17+ |
| Developer | Free Radical Software | Les Éditions Formed inc. |
Customer experience
Lytes
Lanthier
In-app purchases
Lytes
No in-app purchases
Lanthier
- Lanthier - current users3 Months trial$19.491 Year
- Lanthier - new users7 Days trial$19.491 Year









