Best Diagnotes Apps

194+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated July 2026

From beginner-friendly picks to power-user tools, our diagnotes list covers 194+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.

Compare top Diagnotes Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Backline+Backline+Free2.4★ (32)NoNoJul 2026
2Diagnotes | PatientsDiagnotes | PatientsFree5.0★ (1)NoNoMay 2026
3Diagnosaurus® DDxDiagnosaurus® DDxFree4.8★ (2.5K)NoYesAug 2026
4WebMD: Symptom CheckerWebMD: Symptom CheckerFree4.7★ (135K)YesNoAug 2026
5DSM-5-TR® Diagnosis HandbookDSM-5-TR® Diagnosis HandbookFree4.6★ (1.5K)NoYesAug 2026
6ThinkDiag+ThinkDiag+Free4.5★ (4K)NoNoAug 2026
7Merck Manual ProfessionalMerck Manual ProfessionalFree4.8★ (1K)NoNoAug 2026
8Sweetpotato DiagNotesSweetpotato DiagNotesFreeNoMay 2026

Top Picks for Diagnotes

Backline+#1

Backline+ by Diagnotes Inc

Healthcare collaboration
Editor's Choice
🏥 Medical
2.4(32 ratings)
Free
Backline+ screenshot 1
Backline+ screenshot 2
Backline+ screenshot 3
Backline+ screenshot 4
Backline+ screenshot 5

This HIPAA-compliant platform offers real-time collaboration and workflow automation for healthcare professionals. It centralizes communications and provides virtual patient rooms to enhance care team coordination and improve efficiency.

Diagnotes | Patients#2

Diagnotes | Patients by Diagnotes Inc

Healthcare collaboration
Strong Contender
🏥 Medical
5.0(1 ratings)
Free
Diagnotes | Patients screenshot 1
Diagnotes | Patients screenshot 2
Diagnotes | Patients screenshot 3
Diagnotes | Patients screenshot 4
Diagnotes | Patients screenshot 5

This app provides a secure channel for patients and caregivers to communicate directly with healthcare providers. It facilitates care coordination and management through features like video calls, image sharing, and text messaging, potentially reducing the need for in-person appointments.

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
Diagnosaurus® DDx screenshot 1
Diagnosaurus® DDx screenshot 2
Diagnosaurus® DDx screenshot 3
Diagnosaurus® DDx screenshot 4
Diagnosaurus® DDx screenshot 5
Diagnosaurus® DDx screenshot 6

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

Room to Improve

  • 🐛 Lack of in-depth information
  • 🐛 Incomplete differential diagnoses
  • 🐛 Lack of links to explain conditions

More Diagnotes apps to explore

4
WebMD: Symptom Checker
WebMD: Symptom Checker
WebMD: Symptom Checker
Med Reminders, Doctor Finder
Free

This app helps you check symptoms, get medication reminders, and find doctors. It also offers prescription savings and information on conditions and drugs.

Symptom CheckerMedication RemindersPrescription Savings
🏥 Medical
(135K)
free with in-app purchases
5
DSM-5-TR® Diagnosis Handbook
DSM-5-TR® Diagnosis Handbook
DSM-5-TR® Diagnosis Handbook
Differential DDx Text Revision
Free

This app assists clinicians in making accurate psychiatric diagnoses using the latest DSM-5-TR® classifications. It features interactive decision trees and algorithms to guide users through a 6-step diagnostic process, offering differential diagnoses and detailed condition entries.

Interactive decision trees for diagnosisReview selected diagnostic pathsAlgorithms for enhanced assessment
🏥 Medical
(1.5K)
free with in-app purchases
6
ThinkDiag+
ThinkDiag+
ThinkDiag+
by THINKCAR INC
Free

This app provides professional-level vehicle diagnostics, offering features like reading/clearing fault codes, data flow analysis, and special maintenance functions. It supports a wide range of car brands and allows users to subscribe to specific diagnostic software. Connects via Bluetooth to your smartphone for intelligent vehicle analysis.

OE-level diagnostic functionsFull OBD II diagnosisSpecial maintenance functions
🔧 Utilities
(4K)
free with in-app purchases
7
Merck Manual Professional
Merck Manual Professional
Merck Manual Professional
by Merck & Co Inc
Free

This medical reference app offers healthcare practitioners and students clear, practical explanations for thousands of conditions across major medical and surgical specialties. It includes photos, illustrations, instructional videos, drug information, quizzes, and case simulations to stay updated with the latest clinical information.

Thousands of medical topicsPhotos and illustrationsInstructional 'How to' videos
🏥 Medical
(1K)
free
8
Sweetpotato DiagNotes
Sweetpotato DiagNotes
Sweetpotato DiagNotes
by Identic Pty. Ltd.
Free
📚 Education
(0)
9
Zocdoc - Find and book doctors
Zocdoc - Find and book doctors
Zocdoc - Find and book doctors
Top-rated, in-network care
Free

Easily find and book appointments with in-network doctors and specialists. Search by insurance, specialty, or availability to schedule in-person or telehealth visits. Read reviews, fill out forms online, and receive appointment reminders.

Search by insurance and locationBrowse by specialty and availabilityFilter by distance, gender, ratings
🏥 Medical
(171K)
free
10
MyQuest for Patients
MyQuest for Patients
MyQuest for Patients
by Quest Diagnostics, Inc.
Free

Access your lab results, schedule appointments, and manage your health information securely. Find nearby locations, share data with providers, and even purchase your own tests. Take proactive control of your well-being.

View lab results securelyFind nearby Quest locationsSchedule and manage appointments
🏥 Medical
(466K)
free
11
Circle Medical
Circle Medical
Circle Medical
A modern doctor's office
Free

Access a modern primary care clinic with board-certified providers for same-day or next-day appointments. Establish ongoing relationships for general health, mental health, preventive care, and urgent issues. Video appointments are available in many states.

Same-day/next-day appointmentsBoard-certified providersAnnual physicals and wellness exams
🏥 Medical
(30K)
free
12
HealthTap Primary Care Doctors
HealthTap Primary Care Doctors
HealthTap Primary Care Doctors
Online Doctor & Primary Care
Free

Access ongoing medical care from a dedicated primary care doctor virtually. Get personalized advice, prescriptions, and referrals affordably, with or without insurance. Available for adults and children.

Choose and keep one primary care doctorVirtual doctor visitsPrescriptions and lab orders
🏥 Medical
(5K)
subscription
13
Prognosis: Your Diagnosis
Prognosis: Your Diagnosis
Prognosis: Your Diagnosis
Improve your diagnosis skills
Free

Enhance your diagnostic and management skills with interactive clinical cases. Access facts and explanations to understand the rationale behind diagnoses and treatments. New cases are added weekly, reflecting current medical trends.

Interactive clinical casesDiagnostic and management rationaleSuccinct explanations
🏥 Medical
(2.9K)
ad-supported
14
DocSquad
DocSquad
DocSquad
Telehealth & Telemedicine
Free

Access virtual healthcare services from qualified providers on your schedule. Get diagnoses for common conditions, treatment plans, and prescription refills quickly, with or without insurance. Connect with board-certified US-based providers for convenient care.

Virtual care on your timeDigital Diagnosis for common conditionsPrescription refills without office visits
🏥 Medical
(3.9K)
free with in-app purchases
15
Phone Doctor Plus
Phone Doctor Plus
Phone Doctor Plus
by Idea Mobile Tech inc.
Free

Diagnose over 40 hardware and system issues with this app. Monitor your phone's hardware, battery, memory, and storage. Track network usage and daily charging cycles to keep your device running smoothly.

40+ hardware diagnostic testsSystem monitoring (hardware, battery, memory, storage)Daily battery capacity and charging cycle recording
🔧 Utilities
(328)
ad-supported
16
Dr Lal PathLabs
Dr Lal PathLabs
Dr Lal PathLabs
by Dr Lal PathLabs
Free

Book diagnostic tests, including blood and urine analyses, and comprehensive health checkups easily and reliably. Access over 5000 test options and track your reports conveniently. Offers home sample collection and nearby center location.

Book blood, urine, and health checkup testsHome sample collection optionAccess and download test reports
🏥 Medical
(84)
free
17
Recuro Care
Recuro Care
Recuro Care
Digital Health Solutions
Free

Access a comprehensive suite of virtual health services, including primary care, behavioral health, at-home testing for over 90 diseases, and genetic screening. Receive personalized care and monitor your health remotely through secure message-based and video interactions with top physicians.

Virtual primary careBehavioral health servicesAt-home lab testing
🏥 Medical
(11K)
free
18
CHEST SEEK
CHEST SEEK
CHEST SEEK
by American College of Chest Physicians
Free

Access a comprehensive library of case-based questions and detailed rationales in pulmonary, critical care, and sleep medicine. Prepare for certification exams, earn CME credit, and challenge your clinical knowledge anytime, anywhere.

Case-based questionsExpert-written rationalesExam preparation
📚 Education
(494)
free with in-app purchases
19
OTR Diagnostics
OTR Diagnostics
OTR Diagnostics
Heavy-duty scan tool made easy
Free

This app helps heavy-duty truck owners diagnose and resolve common issues like fault codes, regen problems, and derates. It provides plain-language explanations of error codes, allows for bi-directional commands to fix issues, and monitors live truck data to prevent downtime.

AI-powered fault code explanationBi-directional commands for repairsReset active/inactive fault codes
🔧 Utilities
(96)
free with in-app purchases
20
TOPDON CarPal
TOPDON CarPal
TOPDON CarPal
OBDII Diagnostic Scan Tool
Free

Transform your phone into a powerful car diagnostic tool with this app. It offers comprehensive system scans, full OBDII functionality, and specialized maintenance services for a wide range of vehicle brands. Easily identify issues, access repair data, and generate detailed reports wirelessly.

Full System DiagnosisFull OBD2 Functions6 Special Maintenance Functions
🔧 Utilities
(38)
free with in-app purchases

FAQ about Diagnotes

What are the best diagnotes apps for iPhone?
Backline+ tops our diagnotes apps ranking as of July 2026, with a 2.4-star average from 32 App Store ratings, and it's free to download.
Yes — 20 of the top diagnotes apps we rank are free to download, including Backline+ and Diagnotes | Patients.
Backline+ has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 194+ diagnotes apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
Backline+ is a cloud-based platform designed for healthcare professionals to facilitate real-time collaboration, automate workflows, and ensure secure messaging. It aims to centralize all communications within a HIPAA-compliant environment.
Backline+ is specifically designed by healthcare professionals for healthcare professionals, including clinicians and administrative staff within hospitals and health systems.

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