Comparison

VisualDx vs AMBOSS Medical Knowledge

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

Head to head
About

VisualDx

This visual reference tool aids medical professionals in improving patient engagement and diagnostic accuracy. It utilizes AI and a vast image atlas to help build custom differentials, share patient-specific images, and access comprehensive diagnostic information. Earn continuing education credits while making better medical decisions.

Highlights
  • Build custom differentials
  • Engage patients with visual aids
  • Improve diagnostic accuracy
  • Access therapy and test options
  • Recognize infectious diseases
  • Earn CME credits
Currently charting
Read full description

VisualDx is a visual reference tool for medical professionals that leverages AI technology and a comprehensive image atlas to support faster, more confident decisions, fewer unnecessary referrals and testing, and higher patient engagement and satisfaction. With VisualDx, clinicians can: • Build dynamic differentials that evolve as you think. • Use guided support to surface clinically relevant results. • Compare diagnoses to improve decisions for your patients. • Use our AI to take a picture of your patient’s skin condition to better understand morphology and possibilities. • Engage with patients by sharing pictures of skin that reflect their disease presentation. • Access therapy and testing recommendations across over 3,500 conditions. • Quickly recognize infectious diseases and travel-related illnesses with our public health resources. • Test your diagnostic skills with our image challenges and educational resources. • Earn 0.5 AMA PRA Category 1 Credits™ for internet point of care activity with every search. See why this award-winning clinical decision support system is being used in more than 2,300 hospitals, clinics, and medical schools by physicians, nurses, students, PAs, NPs, and other healthcare professionals worldwide. VisualDx requires a subscription. Terms of Use: https://www.visualdx.com/legal/acceptable-use-policy-notice Privacy Policy: https://www.visualdx.com/legal/privacy-policy/

About

AMBOSS Medical Knowledge

This app provides quick, reliable answers for medical professionals and students. It offers offline access to clinical information, diagnostic image interpretation, and patient care tools. Prepare for exams with high-yield content and integrate with flashcards for enhanced learning.

Highlights
  • Offline clinical knowledge access
  • Diagnostic image interpretation
  • Patient care tools (flowcharts, checklists, calculators)
  • USMLE and Shelf exam preparation
  • Anki flashcard integration
  • Evidence-based medical content
Currently charting
Read full description

Your study and clinical companion. Get fast, reliable answers to clinical questions while studying, preparing for exams, or managing patients. IMPRESS YOUR ATTENDING & PROVIDE EXCELLENT PATIENT CARE WITH AMBOSS - Find the answers you need with the AMBOSS Knowledge app. It works offline so you can use it in the hospital and on the go. - Interpret key clinical findings on diagnostic images with image overlays. - Stay on top of every patient with evidence-based patient-care tools, such as diagnostic flowcharts, acute management checklists, drug dosing, clinical calculators, warning signs, and more. - Make quick decisions confidently, so you can spend more time with your patients. ACE YOUR MEDICAL SCHOOL EXAMS - Be prepared for every exam (in-house, USMLE® Step, or NBME® Shelf exams) with expertly-created high-yield content that covers the entire USMLE® content outline. - Connect your Anki flashcards to the AMBOSS library and remember everything you learn. You’ll get pop-up explanations of medical terms and images right there in your Anki decks. Now available on mobile. - The library content is designed for quick and easy access so you can find the relevant info you need in seconds. And if you want to dive deeper for a more thorough understanding of the topic at hand, all you need to do is click. - Succeed on Shelf exams and honor clinical rotations with the Clerkship Survival Guides and clinical content. - The AMBOSS Qbank app is the ideal way to apply your knowledge and become a top-tier test-taker with its learning features. It is available as a separate app. Once downloaded, both AMBOSS apps integrate seamlessly with each other for a complete studying experience. *AMBOSS users score higher on exams and perform better in the hospital. Learn more here. GETTING STARTED - Create your account at amboss.com/us - Download the AMBOSS Medical Knowledge Library app. - Once that’s done, you’ll have 5 days to explore the platform for FREE. - When your 5-day free trial is up, choose the membership that’s right for you and become part of the AMBOSS medical community. IN CASE YOU NEED HELP If you have any questions, check out our Help Center or get in touch and we’ll be happy to assist. support.amboss.com/hc/en-us Terms and Conditions: https://www.amboss.com/us/terms Privacy Policy: https://www.amboss.com/us/privacy

Screenshots

VisualDx4 screens
AMBOSS Medical Knowledge4 screens

Verdict

The call

The clearest difference is monetization model: AMBOSS Medical Knowledge at free with in-app purchases against VisualDx's subscription. AMBOSS Medical Knowledge also leads on rating (4.9 vs 4.4) and ratings volume (14K vs 186). VisualDx's advantage is ads (none vs shown). On price, review sentiment, update cadence and in-app purchases 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. VisualDx sells 11 in-app purchases, starting at $39.99 per month and AMBOSS Medical Knowledge sells 1 in-app purchase, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

AMBOSS Medical Knowledge holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: AMBOSS Medical Knowledge has 14K ratings behind it against 186, so its average is the more settled of the two. Written reviews point the same way: 84% of VisualDx's written reviews are positive against 86% of AMBOSS Medical Knowledge's.

UpkeepUpdate frequency

VisualDx ships an update fortnightly, AMBOSS Medical Knowledge monthly. Both last shipped on September 23, 2026.

Scorecard4 real differences · 7 level
VisualDx versus AMBOSS Medical Knowledge: the parameters behind the verdict, then further details
ParameterVisualDxAMBOSS Medical Knowledge
PriceFreeFree
Rating4.4 (186 ratings)4.9 (14K ratings) — better
Positive reviews84.3% of reviews86.4% of reviews — better
Number of ratings18614K — better
Update frequencyFortnightly — betterMonthly
AdsNo — betterYes
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
Best chart rank#15 — better#31
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.4 — better17.0
Further details — not scored
Size226 MB72 MB
Age rating17+17+
DeveloperLogical ImagesAMBOSS

Customer experience

VisualDx

All ratings186 ratings
Positive83.3%
Neutral4.8%
Negative11.8%
Written reviews102 reviews
Positive84.3%
Neutral1.0%
Negative14.7%

AMBOSS Medical Knowledge

All ratings13,749 ratings
Positive98.4%
Neutral0.6%
Negative1.0%
Written reviews154 reviews
Positive86.4%
Neutral4.5%
Negative9.1%

User reviews

VisualDx

From 186 App Store ratings

What we love

  • 📸 Excellent clinical images and kodachromes
  • 👍 User-friendly interface and easy navigation
  • 🎓 Comprehensive differential diagnosis tool
  • 📚 Detailed disease summaries and treatment information
  • 🌍 Inclusive representation of skin of color

Room to improve

  • 💰 Expensive subscription cost
  • ❌ Difficult subscription cancellation process
  • 🐛 App crashes and performance issues
  • 📱 Quiz feature laggy and unreliable
  • 😤 Poor customer service responsiveness

AMBOSS Medical Knowledge

From 14K App Store ratings

What we love

  • 👍 Easy to navigate and fast to find information
  • 🚀 Comprehensive and clear
  • 🚀 Excellent platform for learning medicine
  • 🚀 Great medical resource for students and clinicians
  • 🚀 Unequivocally the best platform for learning medicine

Room to improve

  • 🐛 Difficulties using the app and studying after recent update
  • 🔓 App limitations like no highlighting, text size adjustment, or digital notebook
  • 🐛 Occasional crashes
  • 🐛 Knowledge app stopped working
  • 🐛 Poor quality of questions in the question bank

Bugs and requests

VisualDx

Reported bugs

6 issues
  • App crashes when using quiz feature
  • CME credit claiming functionality fails
  • Subscription cancellation not processed
  • Renewal charges despite cancellation requests
  • Quiz unable to load properly
Show 1 more
  • Account access issues after payment

Requested features

6 requests
  • Make app free again (previously free)
  • Simplify subscription cancellation in-app
  • Improve quiz functionality for mobile
  • Add quiz feature to desktop version
  • Expand patient information handouts
Show 1 more
  • Better quiz image clarity and context

AMBOSS Medical Knowledge

Reported bugs

3 issues
  • Forced interaction with Safari from the app
  • Inability to access articles and diagrams
  • Tiny font size that cannot be adjusted

Requested features

8 requests
  • Add article options in clinician mode
  • Bring back old highlight color
  • Add dark mode
  • Increase text size
  • Add AI assistant to search content and provide answers
Show 3 more
  • Add specialty tracks and question bank on the app
  • Allow highlighting and note-taking in the app
  • Add a digital notebook feature

In-app purchases

11 purchases

VisualDx

Subscriptions9
  • Complete (1 Month)1 Month trial$39.991 Month
  • VisualDx Core Monthly7 Days trial$39.991 Month
  • Complete+DermExpert (1 Month)1 Month trial$49.991 Month
Show 6 more
  • VisualDx Elite Monthly7 Days trial$49.991 Month
  • Add DermExpert (1 Year)$99.991 Year
  • Complete (1 Year)1 Month trial$149.991 Year
  • VisualDx Core Annual7 Days trial$249.991 Year
  • VisualDx Elite Annual7 Days trial$299.991 Year
  • Complete+DermExpert (1 Year)1 Month trial$499.991 Year
One-time2
  • Add DermExpert (1 yr)$99.99
  • Complete (1 yr)$399.99
1 purchases

AMBOSS Medical Knowledge

Subscriptions1
  • AMBOSS Membership1 Month trial$19.991 Month

Questions

Is VisualDx free?
VisualDx is free to download, with in-app purchases available.
Is AMBOSS Medical Knowledge free?
AMBOSS Medical Knowledge is free to download, with in-app purchases available.
Which has better reviews, VisualDx or AMBOSS Medical Knowledge?
AMBOSS Medical Knowledge is rated higher. VisualDx averages 4.4 out of 5 from 186 ratings, while AMBOSS Medical Knowledge averages 4.9 from 14K ratings.
Do VisualDx or AMBOSS Medical Knowledge have ads?
AMBOSS Medical Knowledge shows ads; VisualDx does not.
Which is updated more often, VisualDx or AMBOSS Medical Knowledge?
VisualDx ships an update fortnightly, and AMBOSS Medical Knowledge monthly. Most recently, VisualDx was updated on September 23, 2026 and AMBOSS Medical Knowledge on September 23, 2026.
Which is more popular, VisualDx or AMBOSS Medical Knowledge?
VisualDx currently peaks at #15 in the App Store charts, and AMBOSS Medical Knowledge at #31. Chart position reflects recent download velocity rather than total install base.

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