Comparison

Synt® vs MedDX

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

Head to head
About

Synt®

This clinical super app synthesizes patient-specific medical information, offering diagnostic decision support and dynamic data for physicians. It aids in diagnosis by augmenting human intelligence with structured medical knowledge and analytics.

Highlights
  • Patient-specific medical information processing
  • Diagnostic decision support
  • Synthetic knowledge and dynamic data points
  • Integration with MediCalc® ia
  • 800+ Disease/Problem Profiles
  • 120+ Differential Diagnosis Sets
  • 1000+ Labs & Tests
Features
Read full description

ScyMed proudly introduces the new Synt® 1.3, an expert system representing the most innovative Clinical super App, for patient-specific medical information processing, synthetic knowledge and dynamic data points for reference, analytics, diagnostic decision support & patient care. In the era of information overload, rising complexity of healthcare and huge cognitive burden for physicians, the most critical challenge they encounter when making a Diagnosis is synthesizing complex patient data (hence its name). Synt® supports the Diagnostic Process achieving synergy between Human Intelligence and Intelligence Augmentation (IA) to reach Diagnostic excellence. The system is fully integrated (data level), with ScyMed's killerApp MediCalc® ia, our trusted and highly acclaimed Medical Calculator System™, with more than half a million users worldwide (since 1999). Featuring mCalx™ (1 panel, 150+ equations/scores). FEATURING: --------------------------------------- 800 Diseases/Problems PROFILES 120+ Differential Diagnosis (DDx) SETS 1000+ Labs & Tests 500+ Equations & Scores 800+ Signs & Symptoms 250+ Drugs 100,000+ DISEASE DATA POINTS (Custom, Disease-specific Flowsheets, any combination) --------------------------------------- Introductory Price: FREE (limited time) +For Physicians, Residents, Med students, PAs and NPs. +Developed by Board-certified physicians in the US. +Trusted resource with proven & reliable data processing. +Fastest & most efficient access to info +intuitive user interface +best Data synthesis & visualization +Evidence-based and fully referenced -------------------------------- DDx Expert System Synt® is a Diagnostic Intelligence Augmentation (IA & AI) application. A rules-based expert system for Clinical Diagnosis. The logic of algorithms and the medical knowledge have been manually encoded. Every bit of data has been meticulously structured and programmed. The diagnostic logic is clear and transparent (no blackbox).  Synt® doesn't rely on LLM or Natural Language Processing at this time. Data: from Static Text to Dynamic Flowsheet Synt® is a breakthrough, it changes access to a wealth of medical knowledge from the static isolated text (book, document) to a connected, custom dynamic flowsheet (software, flowchart). It allows users to visualize and compare, side-by-side, all disease information at the deepest granular level (ad lib), including Signs, Symptoms, Labs, Tests, parameters, equations, scores, etc. The user controls the panels, selects Diseases, changes views, filters data and in the DDx+™ Tool can highlight patient-specific findings for visual efficiency. Big Data. Structured. Synt® is structured 'Big Data', organized, classified, accurate, synthesized. The largest virtual medical information matrix (flowsheet) ever developed, >2 million cells (>800 diseases by >2200 S&S, Labs, Tests, parameters, eqs, scores in the rows). Cells are populated when pertinent and indicate expected findings. Content, Function & UX/UI Synt® incorporates a wealth of synthesized info & knowledge on Diseases & Problems. Data Point cells include links to disease info, pearls, definitions, dynamic tables, classifications, normall values, converters (SI), Stats, Se, Sp, etc. Synt® functionality is highly versatile, it offers multiple views of data (search, filters, selections by Dz or SLT, processing, customization, etc.). The dark UI is elegant & visually efficient, UX is superb. ------------------------- Synt® Tools: DDx+™ (Differential Diagnosis +™) From Dx to specific Dx Noso™ Tool (Disease Data Points Tool) For DDx wayfinding SLT Checkr™ (S&S, Labs, Tests Checker™ Tool) - Symptom, Sign, Lab, Test Checker From Symptom (SLT) to Dx or Drug Drug effx™ Tool (Drug effects) From Drug to symptoms (SLT) & vice versa Synt® emphasis is on Differential Diagnosis (DDx), not on the presentation, Dx (label), Rx or Management. Synt® is NOT a Diagnostic program, it is a DDx Decision Support Tool.

About

MedDX

This app offers a vast collection of AI-powered medical calculators for various specialties. It provides quick access to academic data and stays current with medical AI advancements through an integrated blog. Users can sync their progress across devices and receive notifications for new calculator additions.

Highlights
  • AI medical calculator repository
  • Machine learning calculators
  • Intuitive interface
  • Access to citations and academic data
  • Cross-device syncing
  • AI blog for medical advancements
Features
Read full description

MedDx is a next-generation AI medical calculator repository app designed for a broad range of systems and medical specialties. We boast the largest repository of machine learning medical calculators in the world, an intuitive and easy to use interface, rapid access to relevant citations and academic data, syncing across multiple devices, and much more. Stay up to date with cutting edge medical AI point-of-care technology with our AI blog, included with the app. Or, access our growing collection of calculators and get notified when we add more.

Screenshots

Synt®4 screens
MedDX4 screens

Verdict

The call

The clearest difference is ads: Synt® at none against MedDX's shown. Synt® also leads on monetization model (free vs free with in-app purchases) and iOS requirement (13.0 vs 16.0). On price, rating, review sentiment and ratings volume 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Synt® against 4.9 for MedDX. Both are backed by a comparable volume of ratings — 13 and 34 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Synt® ships an update every 2 weeks, MedDX every 3 weeks. The most recent releases landed on October 5, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 7 level
Synt® versus MedDX: the parameters behind the verdict, then further details
ParameterSynt®MedDX
PriceFreeFree
Rating5.0 (13 ratings) — better4.9 (34 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings1334 — better
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better16.0
Further details — not scored
Size84 MB29 MB
Age rating17+17+
DeveloperScyMed, IncMed Dx Technology LLC

Customer experience

Synt®

All ratings13 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

MedDX

All ratings34 ratings
Positive97.1%
Neutral0.0%
Negative2.9%
Written reviews15 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Synt®

No in-app purchases

None

MedDX

No in-app purchases

Questions

Is Synt® free?
Synt® is free to download, with no in-app purchases.
Is MedDX free?
MedDX is free to download, with no in-app purchases.
Which has better reviews, Synt® or MedDX?
Synt® is rated higher. Synt® averages 5.0 out of 5 from 13 ratings, while MedDX averages 4.9 from 34 ratings.
Do Synt® or MedDX have ads?
MedDX shows ads; Synt® does not.
Which is updated more often, Synt® or MedDX?
Synt® ships an update every 2 weeks, and MedDX every 3 weeks. Most recently, Synt® was updated on October 5, 2026 and MedDX on September 23, 2026.

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