Best Disease Lookup App

247+ iOS apps curated and reviewed

4.4 avg rating

19 free apps

Updated August 2026

Every iPhone needs a few good disease lookup app. We benchmark 247+ 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 Disease Lookup App (August 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Citizen Health	Free	5.0★ (9)	No	No	May 2026
2	Diseases and drugs finder	Free	—	No	No	May 2026
3	ICD-9 Lookup	$1.99	2.3★ (3)	—	No	Jun 2026
4	FollowMyHealth®	Free	4.8★ (116K)	No	No	Sep 2026
5	MyChart	Free	4.6★ (711K)	No	No	Sep 2026
6	GP Diagnosis	Free	—	No	No	Aug 2026
7	ICD-10 CM Codes 2022 Reference	Free	4.0★ (4)	No	Yes	Aug 2026
8	MyHealthONE	Free	4.6★ (70K)	No	No	Sep 2026

Top Picks for Disease Lookup App

Citizen Health by Citizen Health Inc.

AI Advocate for Rare Disease

Editor's Choice

🏥 Medical

5.0(9 ratings)

Free

This app uses AI to help families navigate rare diseases. It organizes medical history, prepares for appointments with AI-generated notes and summaries, and facilitates data sharing for research. It aims to empower users with confidence in managing their or a loved one's care.

Diseases and drugs finder by rahul baweja

Strong Contender

🏥 Medical

0.0(0 ratings)

Free

ICD-9 Lookup by Vertigo Group, LLC.

Worth Considering

🏥 Medical

2.3(3 ratings)

$1.99

This medical app allows professionals and coders to quickly search and reference ICD-9 codes. It features an intuitive interface for looking up codes by name, code, or description, with full details available.

More Disease Lookup App apps to explore

FollowMyHealth®

by Allscripts Healthcare Solutions Inc

Free

Manage your personal health records and communicate with your care team. Access medical profiles, schedule appointments, view results, and handle prescriptions and billing securely. Integrates with Apple Health and offers convenient access via Apple Watch and Touch ID.

View health summary and activitySecure communication with care teamSchedule appointments

Your secure health connection

Free

Access your health records, communicate with your doctor, schedule appointments, and view bills. This app securely connects you to your healthcare provider's information, allowing you to manage your well-being and family's care conveniently from your mobile device.

Communicate with care teamReview health informationSchedule and manage appointments

The Medical Diagnosis App

Free

🏥 Medical

(0)

ICD-10 CM Codes 2022 Reference

Disease Dictionary for Doctors

Free

Access a comprehensive, offline digital reference for ICD-10-CM disease codes. Easily search, browse, and share medical classification information, replacing bulky physical books with a convenient mobile solution. Stay updated with the latest code revisions.

Offline access to ICD-10-CM codesSearch by disease or codeBrowse by chapters and sections

Patient Health Portal

Free

Access your medical records, view lab results, and schedule appointments. This app simplifies managing your health information and tracking your progress in one secure location. It's designed for patients and caregivers to manage healthcare on their terms.

Access medical recordsView lab resultsSchedule appointments

Consolidate your health data, including lab results and wearable information, into one secure platform. Gain personalized, AI-powered insights and actionable plans for prevention and long-term wellness, with optional clinician support.

Consolidated health dataAI-powered insightsPersonalized action plans

Point-of-Care Diagnosis

Free

A comprehensive, searchable medical database for healthcare professionals. Access detailed disease information, diagnostic test accuracies, and a powerful differential diagnosis generator at the point of care.

1700+ diseases with symptoms and incidence1200+ diagnostic test accuraciesPowerful differential diagnosis generator

🏥 Medical

(32)

free with in-app purchases

Virus Watcher

Your Global Outbreak Tracker

Free

Track global disease outbreaks and health risks in real-time. Get verified news, country-specific advisories, and personalized alerts to stay informed and prepared wherever you are.

Global outbreak mapReal-time health newsTravel health advisories

💪 Health & Fitness

(7)

free

Finch – Health Intelligence

Your health, in one place.

Free

Consolidate all your health information, from medical records and doctor visits to wearable data and daily check-ins, into one secure, organized place. Ask questions about your health history and prepare for appointments with clear summaries.

Organize medical recordsTranscribe appointmentsIntegrate wearable data

This app provides accessible information on rare diseases, including causes, symptoms, and research. It offers curated resources, donation links, and the ability to save content for offline access. Stay informed and support relevant organizations.

Concise articles on rare diseasesSpotlight stories and featured impactsCurated resources and PDFs

Enroll in rare disease studies

Free

This platform connects individuals with rare diseases and their caregivers to research studies and registries. Users can contribute valuable data through surveys and upload health records to help advance medical understanding. The app offers progress saving, notifications, and data visualization tools.

Find rare disease studiesParticipate in registriesContribute data via surveys

Ranked #1 in the Nation

Free

Manage your health with tools for tracking information, scheduling appointments, and accessing medical records. Get health news, research-backed answers, and connect with care teams. Request appointments with experts and utilize online care options.

Track health informationSchedule and manage appointmentsAccess medical records and test results

Pathology Lab User App.

Free

💪 Health & Fitness

(0)

Novellia: Medical Records App

Your complete health history

Free

Centralize your medical history and manage your wellness with this secure, easy-to-use platform. It automatically syncs records from over 50,000 U.S. healthcare providers and allows for easy uploading of physical documents.

Automated syncing with 50,000+ U.S. providersUpload physical documents via cameraConnects with Epic, Cerner, AthenaHealth

Take control of your health with comprehensive lab testing, personalized protocols, and AI-powered insights. Understand your body's data, track changes over time, and make informed decisions for long-term wellness. Connect wearables and upload records for a complete health picture.

160+ lab tests annuallyPersonalized health protocolsPrivate AI Chat for results

Manage your health conveniently and securely from anywhere. Communicate with your doctor, schedule appointments, refill prescriptions, and access your medical history. Get personalized health information and find care options that suit your needs.

Email doctor's officeSchedule/cancel appointmentsRefill prescriptions

💪 Health & Fitness

(1.1M)

free

maxCoder - ICD-10 Reference

Easy ICD-10 code lookup

Free

Quickly look up ICD-10 codes on your mobile device. This app helps medical professionals find codes by number, diagnosis, or description, and allows them to save favorites and share codes with colleagues. It includes ICD-9 references and works offline.

ICD-10 code lookupSearch by code, diagnosis, or descriptionICD-9 reference

🏥 Medical

(1)

free

FAQ about Disease Lookup App

What is the best disease lookup app for iPhone?

Citizen Health tops our disease lookup app ranking as of August 2026, with a 5.0-star average from 9 App Store ratings, and it's free to download.

Are there free disease lookup app for iPhone?

Yes — 19 of the top disease lookup app we rank are free to download, including Citizen Health and Diseases and drugs finder.

Does Citizen Health have ads or in-app purchases?

Citizen Health has no ads and has no in-app purchases, according to its App Store listing as of August 2026.

How many disease lookup app are on the App Store?

We track 247+ disease lookup app on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.

What is Citizen Health?

Citizen Health is a free AI-powered app designed to help rare disease families manage their medical information. It organizes medical history, assists with appointment preparation, and offers tools for understanding treatment options and drafting documents.

How does Citizen Health help with appointments?

Citizen Health can record and take notes during medical visits, providing detailed summaries and next steps. This allows users to focus on the conversation and easily recall important information discussed by the doctor.