Comparison

Incidentaloma CT / MRI Guide vs Lanthier

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

Head to head
About

Incidentaloma CT / MRI Guide

This clinical decision-support tool provides step-by-step guidance for evaluating and managing incidental imaging findings based on the latest ACR recommendations. It offers dynamic management cards, organ-system quick-switching, and built-in radiology calculators for point-of-care use.

Highlights
  • ACR Incidental Findings Integration
  • Dynamic Management Card
  • Organ-System Quick-Switch
  • Radiology Calculators
  • Self-Assessment Mode
  • Offline Access
Features
Read full description

Download includes a free trial; continued use requires a 6‑ or 12‑month auto‑renewing subscription. Incidentaloma CT & MRI Guide is a clinical decision-support guide built around the latest American College of Radiology (ACR) Incidental Findings Committee recommendations. It delivers point-of-care, step-by-step guidance so you can evaluate and manage incidental findings with clarity and consistency—whether you practice in radiology, primary care, or another specialty. --- Key Features (unlocked after the free trial with an active subscription) ACR Incidental Findings Integration • Full, in-app access to current ACR pathways for incidental findings across the head/neck, thorax, abdomen, and pelvis—with concise management instructions drawn directly from the guidelines. Dynamic Management Card • A single, card that updates in real time as you select organ, lesion size and imaging features—instantly surfacing the appropriate follow-up algorithm. Organ-System Quick-Switch • In a few taps you can jump between guidelines for abdominal lymph nodes, adrenal masses, liver masses, pancreatic cysts, renal masses, splenic masses, gallbladder/biliary abnormalities, lung nodules/cysts/ground-glass opacities/reticular opacities, mediastinal masses/lymph nodes, pericardial disease, pineal cysts, pituitary lesions, and thyroid nodules. Radiology Calculators • Built-in, point-of-care calculators to support common CT/MRI characterization and risk estimates, including adrenal chemical shift (ASII, CSI ratio, ASR%), adrenal CT washout (absolute & relative), Brock lung nodule risk, lung nodule volume doubling time, liver steatosis (MRI; SII 2-point), thymic chemical shift ratio (MRI), and thymic signal intensity index (MRI). Self-Assessment Mode • Expert-curated question packs that spotlight high-yield thresholds and diagnostic pearls to reinforce your understanding of the follow-up guidelines. Enhanced Readability • Dark-mode support, dynamic text sizing, and a distraction-free interface optimized for hectic reading environments. Offline Access • All guideline logic runs on-device—no login or server required. Medical Disclaimer: This app is for informational purposes only and is not a substitute for professional medical advice. In addition to using this app, always consult a qualified healthcare provider for diagnosis and treatment decisions. SUBSCRIPTION OPTIONS ¹ • 6‑Month subscription (free trial available) | Price displayed in‑app; may vary by region • 12‑Month subscription (free trial available) | Price displayed in‑app; may vary by region We strive to incorporate any updates from the White Papers of the ACR Incidental Findings Committee within 30 days of publication and plan to add new self‑assessment question packs every six months. Future feature additions and update frequency may change without notice. ¹ Payment & Renewal – Payment is charged to your Apple ID at confirmation. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Manage or cancel anytime in Settings ▸ Apple ID ▸ Subscriptions. Note: If you switch plans or re-subscribe during the free trial, the remaining trial time is lost and you will be charged immediately. Privacy Policy: https://radiologiq.squarespace.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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

Screenshots

Incidentaloma CT / MRI Guide4 screens
Lanthier4 screens

Verdict

The call

The clearest difference is rating: Incidentaloma CT / MRI Guide at 4.4 against Lanthier's 3.8. Incidentaloma CT / MRI Guide also leads on review sentiment (75% vs 62%) and ratings volume (29 vs 5). On price, update cadence, ads and in-app purchases 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. Incidentaloma CT / MRI Guide sells 2 in-app purchases, starting at $14.99 per 6 months 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.

ReceptionRating · Positive reviews · Number of ratings

Incidentaloma CT / MRI Guide holds the better App Store score, 4.4 against 3.8. That said, the two scores are not equally well evidenced: Incidentaloma CT / MRI Guide has 29 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 75% of Incidentaloma CT / MRI Guide's written reviews are positive against 62% of Lanthier's.

UpkeepUpdate frequency

Incidentaloma CT / MRI Guide ships an update every 4 months, Lanthier every 2 months. Both last shipped on November 6, 2026.

Scorecard3 real differences · 7 level
Incidentaloma CT / MRI Guide versus Lanthier: the parameters behind the verdict, then further details
ParameterIncidentaloma CT / MRI GuideLanthier
PriceFreeFree
Rating4.4 (29 ratings) — better3.8 (5 ratings)
Positive reviews75.0% of reviews — better61.9% of reviews
Number of ratings29 — better5
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionSubscription
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.616.0 — better
Further details — not scored
Size59 MB70 MB
Age rating17+17+
DeveloperRADIOLOGiQ, LLCLes Éditions Formed inc.

Customer experience

Incidentaloma CT / MRI Guide

All ratings29 ratings
Positive86.2%
Neutral0.0%
Negative13.8%
Written reviews12 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

Lanthier

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews21 reviews
Positive61.9%
Neutral9.5%
Negative28.6%

In-app purchases

2 purchases

Incidentaloma CT / MRI Guide

Subscriptions2
  • 6-Month Subscription14 Days trial$14.996 Months
  • 12-Month Subscription14 Days trial$19.991 Year
2 purchases

Lanthier

Subscriptions2
  • Lanthier - current users3 Months trial$19.491 Year
  • Lanthier - new users7 Days trial$19.491 Year

Questions

Is Incidentaloma CT / MRI Guide free?
Incidentaloma CT / MRI Guide is free to download, with in-app purchases available.
Is Lanthier free?
Lanthier is free to download, with in-app purchases available.
Which has better reviews, Incidentaloma CT / MRI Guide or Lanthier?
Incidentaloma CT / MRI Guide is rated higher. Incidentaloma CT / MRI Guide averages 4.4 out of 5 from 29 ratings, while Lanthier averages 3.8 from 5 ratings.
Do Incidentaloma CT / MRI Guide or Lanthier have ads?
Neither Incidentaloma CT / MRI Guide nor Lanthier shows ads.
Which is updated more often, Incidentaloma CT / MRI Guide or Lanthier?
Incidentaloma CT / MRI Guide ships an update every 4 months, and Lanthier every 2 months. Most recently, Incidentaloma CT / MRI Guide was updated on November 6, 2026 and Lanthier on November 6, 2026.

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