Comparison

MedCalX vs SOFA ⊗

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

SOFA ⊗

This medical app calculates the Sequential Organ Failure Assessment (SOFA) score. It assesses organ system performance and assigns a score to determine the risk of mortality for ICU patients. A higher SOFA score indicates a greater likelihood of mortality.

Highlights
  • SOFA score calculation
  • Organ system assessment
  • Mortality risk determination
  • ICU patient data analysis
Read full description

The Sequential Organ Failure Assessment (SOFA) score is the interactive scoring system that assesses the performance of several organ systems in the body & assigns a score based on the data obtained in each category. After sofa score calculation process, it generates the risk of mortality for ICU patients. The higher the SOFA score, the higher the likely mortality.

Screenshots

MedCalX4 screens
SOFA ⊗4 screens

Verdict

The call

The clearest difference is rating: SOFA ⊗ at 5.0 against MedCalX's 3.7. SOFA ⊗ also leads on in-app purchases (none vs 3) and iOS requirement (9.0 vs 17.0). MedCalX's advantage is ratings volume (30 vs 1). 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. SOFA ⊗ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SOFA ⊗ holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: MedCalX has 30 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

MedCalX ships an update every 5 months, SOFA ⊗ every 4 months. The most recent releases landed on October 18, 2026 and October 2, 2026 respectively.

Scorecard5 real differences · 5 level
MedCalX versus SOFA ⊗: the parameters behind the verdict, then further details
ParameterMedCalXSOFA ⊗
PriceFreeFree
Rating3.7 (30 ratings)5.0 (1 ratings) — better
Positive reviews45.8% of reviews—
Number of ratings30 — better1
Update frequencyEvery 5 monthsEvery 4 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.09.0 — better
Further details — not scored
Size45 MB9 MB
Age rating17+4+
DeveloperOssus GmbHMd. Mamun-Ur-Rashid

Customer experience

MedCalX

All ratings30 ratings
Positive66.7%
Neutral6.7%
Negative26.7%
Written reviews118 reviews
Positive45.8%
Neutral7.6%
Negative46.6%

SOFA ⊗

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

SOFA ⊗

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

SOFA ⊗

No in-app purchases

Questions

Is MedCalX free?
MedCalX is free to download, with in-app purchases available.
Is SOFA ⊗ free?
SOFA ⊗ is free to download, with no in-app purchases.
Which has better reviews, MedCalX or SOFA ⊗?
SOFA ⊗ is rated higher. MedCalX averages 3.7 out of 5 from 30 ratings, while SOFA ⊗ averages 5.0 from 1 ratings.
Do MedCalX or SOFA ⊗ have ads?
Neither MedCalX nor SOFA ⊗ shows ads.
Which is updated more often, MedCalX or SOFA ⊗?
MedCalX ships an update every 5 months, and SOFA ⊗ every 4 months. Most recently, MedCalX was updated on October 18, 2026 and SOFA ⊗ on October 2, 2026.

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