Best Medical Diagnosis Reference Apps

233+ iOS apps curated and reviewed

4.5 avg rating
19 free apps
Updated November 2026

Every iPhone needs a few good medical diagnosis reference apps. We benchmark 233+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Medical Diagnosis Reference Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1OpenEvidenceOpenEvidenceFree4.9★ (12K)NoNoNov 2026
2Quick Diagnosis & TreatmentQuick Diagnosis & Treatment$9.994.7★ (299)NoNoOct 2026
3Diagnosaurus® DDxDiagnosaurus® DDxFree4.8★ (2.5K)NoYesNov 2026
4Prognosis: Your DiagnosisPrognosis: Your DiagnosisFree4.8★ (3K)YesNoNov 2026
5Nurse's Pocket Guide-DiagnosisNurse's Pocket Guide-DiagnosisFree4.5★ (179)NoYesOct 2026
6Symptom to Diagnosis EB GuideSymptom to Diagnosis EB GuideFree4.5★ (30)YesYesNov 2026
7DDx: Differential DiagnosisDDx: Differential DiagnosisFree—NoYesOct 2026
8WikiMedWikiMedFree4.6★ (106)NoNoOct 2026

Top Picks for Medical Diagnosis Reference

OpenEvidence#1

OpenEvidence by OpenEvidence Inc.

Evidence-Based Clinical AI
Editor's Choice
🏥 Medical
4.9😊(12K ratings)
Free
#35in Medical
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This AI-powered medical search engine provides verified healthcare professionals with evidence-based answers to clinical questions. It sources information from millions of peer-reviewed papers and leading medical journals, offering cited claims and strength of evidence assessments.

What We Love

  • 🚀 Accurate and concise answers
  • 💡 Provides references and sources
  • 👍 Helpful for clinical practice
  • 🚀 Efficient search and retrieval
  • 👍 Invaluable quick reference tool
  • 👍 Excellent and reliable resource

Room to Improve

  • 🐛 App not working in latest update
  • ⚠️ Requires specific prompts for complete information
Quick Diagnosis & Treatment#2
4.7😊(299 ratings)
$9.99
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Access evidence-based medical diagnosis and treatment information quickly. This app provides streamlined, alphabetically arranged reference for hospital and outpatient settings, updated periodically for accuracy.

What We Love

  • 👍 Easy to navigate and user-friendly interface
  • 🚀 Quick reference for medical information
  • 📚 Comprehensive medical dictionary content
  • ⭐ Excellent for students (NP, PA, AGACNP programs)
  • 💡 Word of the day feature for continuous learning
  • ✅ Concise and bulleted format for key concepts
  • 🎯 Great for daily clinical use
  • 📖 Reliable and up-to-date medical information

Room to Improve

  • 🔍 Poor search functionality and limited search results
  • 🐛 Search doesn't recognize alternative terminology
  • 📱 Table formatting issues and poor landscape view support
  • ❌ Cannot search by symptoms or differentials
  • 🎨 Disorganized content presentation
  • 💰 Not worth the price ($9.99-$10) for some users
  • 📊 Dead space and poor iPad UI layout
  • 🔧 Limited features compared to alternatives like Epocrates
Diagnosaurus® DDx#3

Diagnosaurus® DDx by Unbound Medicine, Inc.

Best-selling DDx app worldwide
Worth Considering
🏥 Medical
4.8😐(2.5K ratings)
FreeIn-App Purchases
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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.

What We Love

  • 👍 User-friendly interface
  • 🚀 Quick access to differential diagnoses
  • 💡 Helpful for building differential diagnoses
  • 👍 Comprehensive coverage of conditions
  • 👍 Useful for medical students and practitioners

Room to Improve

  • 🐛 Lack of in-depth information
  • 🐛 Incomplete differential diagnoses
  • 🐛 Lack of links to explain conditions
  • 🐛 Requires in-app purchase to access full content
  • 🐛 Unreliable update mechanism

More Medical Diagnosis Reference apps to explore

FAQ about Medical Diagnosis Reference

What are the best medical diagnosis reference apps for iPhone?
OpenEvidence tops our medical diagnosis reference apps ranking as of November 2026, with a 4.9-star average from 12K App Store ratings, and it's free to download.
Yes — 19 of the top medical diagnosis reference apps we rank are free to download, including OpenEvidence and Diagnosaurus® DDx.
OpenEvidence has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 233+ medical diagnosis reference apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.