Comparison

MedCalX vs Rheumatools John Libbey E.

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

Head to head
About

MedCalX

This medical calculator app provides healthcare professionals with a comprehensive tool for complex medical formulas, scores, and classifications. It offers an extensive library of over 300 medical calculations, patient management features, and sharing capabilities.

Highlights
  • Extensive medical formula library (300+)
  • Patient management and data saving
  • Customizable workflows
  • Multiple result sharing options
  • Detailed information and references
  • US and SI unit support
  • iCloud synchronization for favorites
Features
Read full description

MedCalX is a tool that enables medical professionals to easily use complicated medical formulas, scores and classifications. 25 years of experience developing this tool for mobile platforms makes MedCalX the leading medical calculator, with an unparalleled user interface and powerful features. MedCalX is free to download and use, but you have access only to a subset of formulas. In-app purchase lets you unlock the whole range of formulas that MedCalX has to offer; more than 300 in total! Main features: • A very large selection (more than 300) of relevant formulas, scores, scales and classifications. • Workflows: create your own series of formulas, text, links and images • Many different ways to share results (and data): copy to clipboard, email report, print via AirPrint, save to patient database... • Exclusive patient management feature for saving and accessing results, as well as images and notes. Results can be exported to the desktop as CSV files and shared between your and your colleaugues iOS devices. • Detailed information and bibliographic references for each formula. • Support for US and SI units, with easy switching from the keypad. • Search for entries by name, keywords and categories. • Takes advantage of iOS 9 – you can now use Spotlight to search for formulas • Customizable list of favorite equations, synchronized via iCloud. • Ability to add notes to individual formulas. • Full support for external (hardware) keyboards Formulas, scores and classifications include, amongst others: • Anesthesiology (ASA, Bromage, Charlson, Cormack, Dermatome, Goldman) • Cardiology (CC/AHA ASCVD, CHADS, EuroSCORE, GRACE, HAS-BLED, Killip, PROCAM, QT-c, TIMI) • Electrolytes (Corrected Ca, Corrected Na, FENa, Osmolal gap) • Evidence-Based Medicine (NNT, Odds, Sample size, Two-way table) • ICU (ABCD2+3, APACHE, CAM-ICU, GCS, Parkland, SAPS, many PE-criteria and trauma scores) • Neurology (AMTS, Aphasia, Canadian rules, NIHSS, WFNS) • Obstetrics (APGAR, Bishop, Malinas, Pregnancy Wheel) • Pediatrics (Age, Target Height, Centor and McIsaac, PRAM, WETFAG) • Respiratory (BODE, Epworth, GOLD, SMART-COP, Spirometry, Thoracoscore) • Renal (Cockcroft, MDRD and more Creatinine/GFR calculators, KDIGO and RIFLE) • ABG analyzer worth $5 in other apps • Complete infusion management tool, great for ICU nurses • Complicated scores (CAM-ICU, CDAI, APACHE, POSSUM, SAPS, Euroscore) If you like MedCalX, we’d appreciate it if you took the time to give us a nice review.

About

Rheumatools John Libbey E.

Features
Read full description

Cette application médicale est à destination des professionnels de santé prenant en charge les maladies ostéo-articulaires ainsi que les maladies systémiques. L’objectif de cette application est d’aider le professionnel de santé dans sa pratique quotidienne. Plusieurs groupes d’outils sont à disposition : - Critères diagnostiques et de classifications des principaux rhumatismes inflammatoires, maladies systémiques, des pathologies microcristallines mais aussi des pathologies mécaniques. - Bilans Préthérapeutiques des antirhumatismaux biologiques et synthétiques ainsi que les biphosphonates. - Posologies des principales thérapeutiques (DMARDs, AINS, corticoïdes, antiostéoporotiques etc…) en rhumatologie en fonction des différentes pathologies. - Ordonnances de surveillance de traitements antirhumatismaux biologiques et synthétiques. - Les différents Scores d’activité des rhumatismes inflammatoires chroniques et des maladies systémiques ainsi que le score de FRAX et autres calculs de la calcémie corrigée, IMC ou surface corporelle. - Infiltrations : modalités de réalisation de gestes infiltratifs avec repères, technique et gestions des anticoagulants/antiagrégants. Aucune donnée relative à l’identité du patient n’est stockée dans l’application ni sur un serveur à distance. Cette application médicale a été coordonnée sur le plan scientifique par les : · Docteur Baptiste Coustet, service de rhumatologie, CHU Bichat-Claude Bernard, Paris · Professeur Philippe Dieudé, service de rhumatologie, CHU Bichat-Claude Bernard, Paris · Docteur Sébastien Ottaviani, service de rhumatologie, CHU Bichat-Claude Bernard, Paris. Rheumatools 2018 par John Libbey Eurotext Limited.

Screenshots

MedCalX4 screens
Rheumatools John Libbey E.4 screens

Verdict

The call

The clearest difference is in-app purchases: Rheumatools John Libbey E. at none against MedCalX's 3. On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MedCalX sells 3 one-off in-app purchases. Rheumatools John Libbey E. asks for nothing beyond the download.

UpkeepUpdate frequency

MedCalX ships an update every 5 months, Rheumatools John Libbey E. every 8 months. The most recent releases landed on September 25, 2026 and September 12, 2026 respectively.

Scorecard1 real difference · 9 level
MedCalX versus Rheumatools John Libbey E.: the parameters behind the verdict, then further details
ParameterMedCalXRheumatools John Libbey E.
PriceFreeFree
Rating3.7 (30 ratings) — better—
Positive reviews45.8% of reviews—
Number of ratings30 — better—
Update frequencyEvery 5 months — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.0 — better
Further details — not scored
Size45 MB61 MB
Age rating17+17+
DeveloperOssus GmbHJohn Libbey Eurotext

Bugs and requests

MedCalX

Reported bugs

10 issues
  • App crashes on startup
  • App crashes when taking patient photos
  • App fails to open or becomes unresponsive
  • Unable to restore previous purchases
  • Doximity unlock feature not working
Show 5 more
  • Spotlight search functionality broken
  • NIH scale interface poorly designed
  • Parameter value limits prevent calculations for severe patients
  • Data migration issues between app versions
  • Preferences not carried over during upgrades

Requested features

17 requests
  • SCORE2 and other modern cardiovascular risk scores
  • TRiP(cast) score
  • Valve disease calculations
  • Pediatric medication dosing calculators
  • Electrolyte and fluid replacement calculations
Show 12 more
  • ICU-specific calculations and AHI calculation
  • GUPTA, AWOL, and CAM traditional scores
  • Dermatology scales and classifications
  • RESP and PRESET scores
  • Psychological assessment scores (depression, alcoholism ratings)
  • Gail model and cancer risk calculations
  • Pediatric weight percentiles by age
  • Custom formula creation
  • Unit conversion tool
  • Personal formula addition feature
  • Forrester classification
  • MMSE and other copyrighted scales

Rheumatools John Libbey E.

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

MedCalX

One-time3
  • MedCalc 3 UpgradeFree
  • Doximity RegistrationFree
  • MedCalX Unlock$4.99
None

Rheumatools John Libbey E.

No in-app purchases

Questions

Is MedCalX free?
MedCalX is free to download, with in-app purchases available.
Is Rheumatools John Libbey E. free?
Rheumatools John Libbey E. is free to download, with no in-app purchases.
Do MedCalX or Rheumatools John Libbey E. have ads?
Neither MedCalX nor Rheumatools John Libbey E. shows ads.
Which is updated more often, MedCalX or Rheumatools John Libbey E.?
MedCalX ships an update every 5 months, and Rheumatools John Libbey E. every 8 months. Most recently, MedCalX was updated on September 25, 2026 and Rheumatools John Libbey E. on September 12, 2026.

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