Best Ddx Apps & Games

116+ iOS apps & games curated and reviewed

4.4 avg rating
17 free apps & games
Updated August 2026

Looking for free ddx apps and games? 17 of our 116+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Ddx Apps & Games (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1DDX FitnessDDX FitnessFree4.3★ (172)NoNoSep 2026
2DDx: Differential DiagnosisDDx: Differential DiagnosisFreeNoYesAug 2026
3Differential Diagnosis | DDxDifferential Diagnosis | DDxFreeNoYesAug 2026
4STATworkUP® DDx Clinical GuideSTATworkUP® DDx Clinical Guide$24.99 was $25.994.5★ (10)NoNoAug 2026
5Derm DDxDerm DDxFree4.0★ (4)NoYesAug 2026
6Connect 3DDXConnect 3DDXFree1.0★ (2)NoNoMay 2026
7EKG DDXEKG DDX$1.994.9★ (27)NoNoMay 2026
8Pediatric Dermatology DDx DeckPediatric Dermatology DDx Deck$44.995.0★ (1)NoNoMay 2026

Top Picks for Ddx

DDX Fitness#1

DDX Fitness by DDX Tech

Editor's Choice
💪 Health & Fitness
4.3(172 ratings)
Free
DDX Fitness screenshot 1
DDX Fitness screenshot 2
DDX Fitness screenshot 3
DDX Fitness screenshot 4
DDX Fitness screenshot 5
DDX Fitness screenshot 6

Access your fitness club with a QR code, view club schedules, and book group or personal training sessions. Explore over 100 online workout programs with an optional subscription for flexible training anytime, anywhere.

More Ddx apps to explore

4
STATworkUP® DDx Clinical Guide
STATworkUP® DDx Clinical Guide
STATworkUP® DDx Clinical Guide
Medical Differential Diagnosis
$24.99
$25.99 | 4% OFF

This medical reference app aids healthcare professionals and students in differential diagnosis and treatment decisions. It correlates symptoms, tests, and conditions to help avoid errors and improve patient care. Features include evidence-based facts, practice guidelines, and rapid access to information for thousands of medical terms.

Differential diagnostic toolsPractice guidelinesEvidence-based facts
🏥 Medical
(10)
paid
5
Derm DDx
Derm DDx
Derm DDx
650+ Dermatology Images
Free

This app provides visual, point-of-care guidance for diagnosing skin disorders. It features a large database of high-resolution images, allowing users to compare variations, zoom in, and access clinical history and treatment options for over 160 dermatologic conditions.

650+ high-quality dermatology imagesGuidance for 160+ dermatologic conditionsSide-by-side image variations
🏥 Medical
(4)
free with in-app purchases
6
Connect 3DDX
Connect 3DDX
Connect 3DDX
by 3D Diagnostix Inc
Free

Manage your surgical cases and account on the go. Track case status, view radiology reports, and access implant plans. Communicate with support and stay updated on offers.

Track case statusView radiology reportsManage account billing
💪 Health & Fitness
(2)
free
7
EKG DDX
EKG DDX
EKG DDX
Helps user read/interpret EKG
$1.99

This app guides users through methodical EKG interpretation, aiding both novices and experienced professionals. It provides example images of abnormal findings and generates potential differential diagnoses based on user input. A basic understanding of EKGs is required to use this offline resource.

Methodical EKG assessment approachExample images of abnormal findingsDifferential diagnosis generation
🏥 Medical
(27)
paid
8
Pediatric Dermatology DDx Deck
Pediatric Dermatology DDx Deck
Pediatric Dermatology DDx Deck
+ smart search suggestions
$44.99

This medical reference app provides quick comparison and diagnosis of pediatric dermatologic conditions with over 560 high-resolution images. It offers concise information on over 150 conditions, including descriptions, history, physical findings, and treatment, with cross-references to other potential diagnoses.

Comparison of pediatric dermatologic conditionsOver 560 high-resolution imagesInformation on 150+ conditions
🏥 Medical
(1)
paid
9
LB Medical Causes & DDx
LB Medical Causes & DDx
LB Medical Causes & DDx
Differential Diagnosis App
Free

This app provides a comprehensive list of potential causes for various symptoms, signs, and investigation findings. It's designed to aid medical professionals and students in formulating differential diagnoses and planning investigations. Features include easy navigation, quick search, and bookmarking capabilities.

Extensive lists of medical causesDifferential diagnosis formulation aidInvestigation planning support
🏥 Medical
(2)
free
10
MobileDDx™ Pocket DDx Tool
MobileDDx™ Pocket DDx Tool
MobileDDx™ Pocket DDx Tool
McGraw-Hill Diagnosaurus
Free

This medical reference tool provides over 1,000 differential diagnoses for medicine and surgery. It allows users to explore conditions by organ system, symptoms, or diseases, and includes 1-year online access. Powerful search technology enables quick information retrieval without an internet connection after initial download.

Over 1,000 differential diagnosesSign & Symptom indexDisease Index
🏥 Medical
(19)
free with in-app purchases
11
Digi-DDx
Digi-DDx
Digi-DDx
Practice diagnosis skills
Free

Practice diagnostic reasoning with simulated patient cases. Make informed decisions on diagnostic tests and patient management, comparing your efficiency and cost to experienced clinicians. Learn from feedback and access relevant literature.

Simulated patient casesDiagnostic test selectionPatient management choices
🏥 Medical
(3)
free
12
Diagnosaurus® DDx
Diagnosaurus® DDx
Diagnosaurus® DDx
Best-selling DDx app worldwide
Free

This medical reference tool assists healthcare professionals in performing differential diagnoses quickly and confidently. It offers a searchable database of over 1,000 diagnoses, cross-referenced for related conditions, and allows users to save favorite entries and make custom notes.

Over 1,000 differential diagnosesSearch by organ system, symptom, or diseaseSee Related DDx feature
🏥 Medical
(2.5K)
free with in-app purchases
13
ABG Pro DDx
ABG Pro DDx
ABG Pro DDx
by Gaurav Malhotra
Free
🏥 Medical
(0)
14
Drugs.com Medication Guide
Drugs.com Medication Guide
Drugs.com Medication Guide
Know more. Be sure.
Free

Access comprehensive information on over 24,000 medications, including prescription drugs, OTCs, and natural products. Manage your medications, check for interactions, identify pills, and find the lowest prices. Stay informed with FDA alerts and detailed side effect information.

Medication list with interaction trackingDrug price comparison and pharmacy finderPill identification by imprint, color, and shape
🏥 Medical
(16K)
free with in-app purchases
15
VanderbiltDDx - Case Simulator
VanderbiltDDx - Case Simulator
VanderbiltDDx - Case Simulator
by Vanderbilt University Medical Center
Free

Practice and refine your diagnostic skills with realistic patient cases. This app generates logically consistent findings based on a vast knowledge base of disorders and their associated symptoms. It helps users identify hypotheses, assess evidence, and review disorder information for improved learning.

Realistic patient case generationEvidence-based knowledge baseHypothesis testing and assessment
🏥 Medical
(1)
free
16
DDSDashboard
DDSDashboard
DDSDashboard
by Gavin Stark
Free
💼 Business
(0)
17
Common Differential Diagnosis
Common Differential Diagnosis
Common Differential Diagnosis
by Mohammed Musa
Free

This app offers medical professionals a quick reference for common symptoms and their potential differential diagnoses. It covers a wide range of conditions across various medical specialties, allowing users to explore symptoms or diseases.

Symptom-to-disease mappingDisease-to-symptom mappingCovers ~180 conditions
🏥 Medical
(2)
free
18
X-Ray Differential Diagnosis
X-Ray Differential Diagnosis
X-Ray Differential Diagnosis
by Mohammed Musa
Free

This app offers a comprehensive list of potential causes for radiological findings encountered in daily medical practice. It covers various imaging types and is designed for educational use by healthcare professionals and students. The app works offline and provides differential diagnoses for nearly 140 radiological findings.

Differential diagnosis for radiological findingsCovers chest, cardiac, GI, urinary, and musculoskeletal imagingInformation on ~140 radiological findings
🏥 Medical
(2)
free
19
DDx Dash
DDx Dash
DDx Dash
The med-school party game
Free

A fast-paced guessing game for medical professionals and enthusiasts. Players hold the phone to their forehead and guess terms shouted by their team before time runs out. Features multiple decks and game modes for solo or team play.

Head-mounted guessing gameplayPass-and-play on a single deviceTilt controls for guessing and passing
🎮 Games
(4)
free with in-app purchases
20
WhatsApp Messenger
WhatsApp Messenger
WhatsApp Messenger
Simple. Reliable. Private.
Free

Connect with friends and family globally through private messaging and high-quality calls. Share moments, documents, and stay in touch across devices, even on slow connections. Your conversations are secured with end-to-end encryption.

End-to-end encrypted messagingHigh-quality voice and video callsGroup chats and calls
🌐 Social Networking
(19M)
free with in-app purchases

FAQ about Ddx

What are the best ddx apps & games for iPhone?
DDX Fitness tops our ddx apps & games ranking as of August 2026, with a 4.3-star average from 172 App Store ratings, and it's free to download.
Yes — 17 of the top ddx apps & games we rank are free to download, including DDX Fitness and DDx: Differential Diagnosis.
DDX Fitness has no ads and has no in-app purchases, according to its App Store listing as of August 2026.
We track 116+ ddx apps & games on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
The DDX Fitness app provides access to your fitness club via a QR code, allows you to view club schedules and addresses, and book personal training or group fitness sessions. It also offers access to online workout programs through an optional subscription.
Key features include QR code access to clubs, a directory of personal trainers, booking for group classes and special programs like Smart Start, event announcements, and a support service. An optional subscription unlocks over 100 online workout programs.

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