Comparison

MD on Call vs Rash

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

Head to head
About

MD on Call

This app provides quick, practical guidance for physicians, residents, and medical students to manage common on-call issues. It offers concise tips for acute assessment and management, helping users efficiently address patient problems without needing to consult lengthy textbooks.

Highlights
  • Quick assessment and management tips
  • Covers 26 frequent on-call situations
  • Management of common electrolyte abnormalities
  • ECG interpretation with examples
  • Guidance on writing medical orders
  • Searchable by acronyms and keywords
Features
Read full description

"fantastic for a review when rushing to a consult." -- Casey Park MD on Call is already trusted by thousands of physicians, residents and medical students around the world. We’ve been there; At 3 AM, you don’t feel like going through a textbook or a long UpToDate article; you just want to get things done. **************** REVIEWS "If you have ever needed a quick reference to learn on the fly or been stumped by a late night call while cross-covering and you are willing to spend a few dollars to avoid that feeling, you should consider this app." iMedicalApps.com “It has all those handy little things that drug guides and medical references just don’t capture concisely.” “I would pay at least double the cost for this handy little reference.” Dr Jessica Otte, drottematic blog **************** **************** AUDIENCE junior residents, interns and medical students INTRO In medical school, we learn a lot about diseases and the basis for their management. However, we are traditionally less exposed to apparently easy problems like pain, nausea or hypokalemia. Quite often, those issues are brought to the attention of the nursing staff in the evening. At that time, the treating team is away and you're on call, running all over the hospital. MD on Call gives you tips on how to QUICKLY assess and manage (acutely) common problems so you can go on assessing the next patient, or to your room to get some well deserved sleep. -- it is NOT meant to replace a textbook -- FEATURES MD on call is divided into 5 main sections: • Issues • 26 frequent on call situations (including management of some specific conditions) Abdominal Pain* Acute Coronary Syndrome* Agitation / Violence Anaphylaxis Bleeding Bradycardia* Chest Pain Constipation Death (Pronouncing) Decreased LOC Dysuria / UTI* Dyspnea Fever Febrile neutropenia Headache Hypertension Hypotension Insomnia Meningitis Nausea / Vomiting Pain Palliation Pneumonia Seizure Tachycardia Wound Dehiscence Wound Infection • Labs • Common electrolytes abnormalities (including management) Hypo Ca, K, Mg, Na, PO4, glycemia Hyper Ca, K, Na, glycemia • ECG • Normal and abnormal ECG values, now with examples • Misc • Suggestions on how to write orders for admission, "comfort measures only", "on call" notes, OR and procedure notes. Transfusions: general information and common reactions Misc: CSF values, opioid conversion... • Lines and Tubes • How to manage common problems, such as a blocked NG tube. • Search • Search using acronyms or keywords **************** Feedback is more than welcome : visit the website for more details **************** 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. This guide is not meant to replace clinical judgment. The authors of MD on call make no claims regarding the accuracy of the information contained herein. The authors of this application and its content shall not be liable for any injury and/or damage to persons or property arising from the use of this application. It is the responsible of the licensed prescriber to verify the indications, contraindications and dosage of the medication (and actions) they prescribe.

About

Rash

An educational tool and memory aid for identifying and understanding common childhood eruptive diseases. It offers essential information on care, treatment, and prevention, complemented by visual aids.

Highlights
  • Childhood disease identification
  • Care and treatment information
  • Preventive measures
  • Photos and illustrations
  • Memory aid sheets
  • Multilingual support (English, French, Spanish)
Features
Read full description

This application is an educational tool and memory aid. It has the essential characteristics of the main eruptive childhood diseases: gianotti-crosti, measles, scarlet fever, rubella, fifth disease, roseola, chicken pox disease, hand-foot-mouth disease, meningococcal purpura and Kawasaki disease. It provides useful information on their care, treatment and preventive measures. Features: - Photos - Illustrations - Memory aid sheets - Language: English/French/Spanish

Screenshots

MD on Call4 screens
Rash4 screens

Verdict

The call

The clearest difference is rating: MD on Call at 5.0 against Rash's 1.0. Rash's advantage is review sentiment (88% vs 78%) and iOS requirement (12.0 vs 16.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

MD on Call costs $9.99 and Rash $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

MD on Call holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews complicate that: 78% of MD on Call's written reviews are positive against 88% of Rash's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

MD on Call ships an update every 4 months, Rash every 7 months. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 7 level
MD on Call versus Rash: the parameters behind the verdict, then further details
ParameterMD on CallRash
Price$9.99$9.99
Rating5.0 (1 ratings) — better1.0 (1 ratings)
Positive reviews78.1% of reviews87.5% of reviews — better
Number of ratings11
Update frequencyEvery 4 months — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.012.0 — better
Further details — not scored
Size17 MB172 MB
Age rating17+4+
DeveloperMessil inc.Bruno Girodias

Customer experience

MD on Call

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews64 reviews
Positive78.1%
Neutral10.9%
Negative10.9%

Rash

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews8 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

Bugs and requests

MD on Call

Reported bugs

3 issues
  • Incompatible with iPhone X
  • Incorrect advice regarding Metaclopramide
  • Incorrect TDF to morphine conversion data

Requested features

16 requests
  • Cover more content
  • Update for iPhone X compatibility
  • Revise content and references for up-to-date information
  • Add more conditions
  • Include common diseases and treatments
Show 11 more
  • Add an 'edit' function to modify and add vignettes
  • Add more clinical scenarios
  • Add medicine dose information
  • Add drug interaction information
  • Include more information with supporting references
  • More streamlined interface
  • Translate to German
  • Translate to French
  • Add more topics
  • Add more clinical high yields and topics
  • Add more futures needed while oncall

Rash

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

MD on Call

No in-app purchases

None

Rash

No in-app purchases

Questions

Is MD on Call free?
MD on Call costs $9.99, with no in-app purchases.
Is Rash free?
Rash costs $9.99, with no in-app purchases.
Which has better reviews, MD on Call or Rash?
MD on Call is rated higher. MD on Call averages 5.0 out of 5 from 1 ratings, while Rash averages 1.0 from 1 ratings.
Do MD on Call or Rash have ads?
Neither MD on Call nor Rash shows ads.
Which is updated more often, MD on Call or Rash?
MD on Call ships an update every 4 months, and Rash every 7 months. Most recently, MD on Call was updated on October 18, 2026 and Rash on October 8, 2026.

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