EBMcalc G.I. vs CTisus CT Quick Guides
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EBMcalc G.I.
Read full descriptionHide full description
EBMcalc G.I. EBMcalc is the most popular and comprehensive Medical Calculator system on the web. It has been highly acclaimed, reviewed and tested over the last 25 years. EBMcalc users should not make any medical decisions based on app content without seeking their doctor's advice. EBMcalc G.I. encompasses numerous medical equations, clinical criteria sets, decision tree tools and dose/unit converters used every day by Gastroenterology specialists. With the growing emphasis on Evidence-Based Medicine, there has never been a greater need for a system such as EBMcalc. Equations included: Ascites Albumin Gradient Fractional Excretion of Amylase (Amylase to creatinine clearance ratio) Hepatitis C Fibrosis Prediction Score MELD Score for End-Stage Liver Disease (NOT appropriate for patients under the age of 12) (SI units) MELD Score for End-Stage Liver Disease (NOT appropriate for patients under the age of 12) MELDNa Score for End-Stage Liver Disease (NOT appropriate for patients under the age of 12) (SI units) MELDNa Score for End-Stage Liver Disease (NOT appropriate for patients under the age of 12) Mortality risk in post-operative patients with cirrhosis (SI units) Mortality risk in post-operative patients with cirrhosis PELD Score for End-Stage Liver Disease (patients less than 12 years old) Stool Osmolal Gap TIPS Risk predictor / Survival predictor (Transjugular Intrahepatic Portosystemic Shunt) Clinical Criteria Sets included: Acetaminophen (Paracetamol) Toxicity Assessment Alcoholic Liver Disease Combined Index (Clinical and Laboratory -- CCLI) Criteria for One Year Mortality Prognosis Alcoholic Liver Disease: Criteria for One Year Mortality Prognosis Autoimmune Hepatitis Diagnostic Criteria Bedside index of severity in acute pancreatitis (BISAP) score Blatchford Score for Gastrointestinal Bleeding Bowel Obstruction Diagnosis: Utility of X-ray Child Pugh Classification for Severity of Liver Disease (SI units) Child Pugh Classification for Severity of Liver Disease Cirrhosis Probability in Hepatitis C (6 models) Crohn's disease activity index (CDAI) Esophageal Varices: Prediction from Platelet Count to Spleen Diameter Ratio Glasgow alcoholic hepatitis score Harvey-Bradshaw index of Crohn's disease activity Hepatitis C Cirrhosis Probability Hepatitis Discriminant Function for Corticosteroid Therapy in Alcoholic Hepatitis Irritable Bowel Syndrome Diagnostic Criteria (Manning Criteria) Lower GI Bleeding and Risk of Severe Bleeding Mayo Score for Assessing Ulcerative Colitis Activity Nonbiliary Cirrhosis Prognostic Criteria for One Year Survival Omeprazole Therapeutic Gain (over placebo) in Dyspepsia Omeprazole Therapeutic Index in Dyspepsia Pancreatitis Prognosis Criteria When Disease Due To Gallstones Pancreatitis Prognosis Criteria Rockall Score for Upper Gastrointestinal Bleeding Decision Trees included: Barrett Esophagus Progression Risk TreeCalc Hepatitis C Outcome TreeCalc NASH Fibrosis Risk (Nonalcoholic Steatohepatitis) TreeCalc Unit and Dose Converters include: Area Unit Conversions Basic Unit Conversions Comprehensive Unit Conversions Corticosteroid Medication Dosing Conversions (glucocorticoid effect) Corticosteroid Medication Dosing Conversions (mineralocorticoid effect) Density Unit Conversions Energy Unit Conversions Fentanyl Patch Initial Dosing Estimate Based on Prior Narcotic Dosing Flow Unit Conversions Force Unit Conversions Length Unit Conversions Opioid Medication Dose Conversions Oxygen Delivery Units Conversions Power Unit Conversions Pressure Unit Conversions SI Unit Conversions (multiple) Speed Unit Conversions Standard Drink Equivalents Temperature Unit Conversions Textile Type Unit Conversions Thyroid Medication Dosing Conversions Time Unit Conversions Volume Unit Conversions Weight Unit Conversions To practice, teach and learn medicine based on solid, literature based evidence, EBMcalc provides easy to use, interactive tools for your Evidence-Based Medicine.
CTisus CT Quick Guides
This medical reference app provides radiologists and other healthcare professionals with curated CT images, imaging pearls, and clinical findings across 17 diverse topics. Key information is organized into critical findings, etiology, epidemiology, presentation, and prognosis for each subject.
- Curated CT images
- Imaging pearls
- Clinical findings
- 17 topic sections
- Critical CT findings
- Etiology, epidemiology, presentation, prognosis
Read full descriptionHide full description
CTisus CT Quick Guides is a unique application that combines select CT images with imaging pearls and important clinical findings across a range of topics important to the radiologist and other medical professionals. The topics are varied and divided into 17 unique sections ranging from the adrenal gland to the vascular system. In each section there are multiple topics ranging from infectious and inflammatory disease to oncology. In each section key information is divided into subsections including the critical CT findings, etiology, epidemiology, presentation and prognosis. We will continue to expand these modules which have won praise from our users especially as they are shared on our social media pages. Please let us know what additional topics you would like covered and any feedback on how we can improve the application. We hope you find it an important educational experience.
Screenshots
Verdict
The clearest difference is price: CTisus CT Quick Guides at Free against EBMcalc G.I.'s $4.99. CTisus CT Quick Guides also leads on update cadence (every 6 months vs every 33 months). EBMcalc G.I.'s advantage is iOS requirement (10.0 vs 16.6). On ads, in-app purchases and device support 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
CTisus CT Quick Guides is free to download; EBMcalc G.I. costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
EBMcalc G.I. ships an update every 33 months, CTisus CT Quick Guides every 6 months. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.
| Parameter | EBMcalc G.I. | CTisus CT Quick Guides |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | — | 4.8 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | Every 33 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 3 MB | 52 MB |
| Age rating | 17+ | 17+ |
| Developer | Foundation Internet Services, LLC | Elliot Fishman |
In-app purchases
EBMcalc G.I.
No in-app purchases
CTisus CT Quick Guides
No in-app purchases
Questions
Is EBMcalc G.I. free?
Is CTisus CT Quick Guides free?
Do EBMcalc G.I. or CTisus CT Quick Guides have ads?
Which is updated more often, EBMcalc G.I. or CTisus CT Quick Guides?
Other comparisons















