Best Health Diagnostic App

0+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated July 2026

Whether you're new to health diagnostic app or looking for an upgrade, our curated collection of 0+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Health Diagnostic App (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1On/GoOn/GoFree4.8โ˜… (52K)NoNoSep 2026
2MyQuest for PatientsMyQuest for PatientsFree4.7โ˜… (494K)NoNoSep 2026
3FITTR: Health & Fitness AppFITTR: Health & Fitness AppFree4.6โ˜… (2.4K)NoYesSep 2026
4LiveWell with Advocate AuroraLiveWell with Advocate AuroraFree4.7โ˜… (164K)NoNoSep 2026
5WellframeWellframeFree4.8โ˜… (11K)NoNoSep 2026
6Duly Health and CareDuly Health and CareFree4.3โ˜… (2.6K)NoNoSep 2026
7WithingsWithingsFree4.6โ˜… (363K)NoYesSep 2026
8Function HealthFunction HealthFree4.9โ˜… (24K)NoNoSep 2026

Top Picks for Health Diagnostic App

On/Go#1

On/Go by Intrivo Diagnostics, Inc.

Delightful health & care
Editor's Choice
๐Ÿฅ Medical
4.8๐Ÿ˜Š(52K ratings)
Free
On/Go screenshot 1
On/Go screenshot 2
On/Go screenshot 3

This app offers convenient COVID-19 testing and rapid treatment options for all variants. It also provides quick access to medical experts and effective treatments for common ailments like sniffles, helping users feel better faster.

What We Love

  • ๐Ÿš€ Easy to use
  • ๐Ÿš€ Convenient at-home testing
  • ๐Ÿš€ Clear instructions and app guidance
  • ๐Ÿš€ Reliable and accurate results
  • ๐Ÿš€ Useful for travel and gatherings
  • ๐Ÿš€ Appreciated for high-risk family members

Room to Improve

  • ๐Ÿ› App login and account creation issues
  • ๐Ÿ› Buggy app performance and camera integration
  • ๐Ÿ”’ Privacy concerns with required personal information
  • ๐Ÿ’ฐ Expensive compared to other test options
MyQuest for Patients#2

MyQuest for Patients by Quest Diagnostics, Inc.

Strong Contender
๐Ÿฅ Medical
4.7๐Ÿ˜(494K ratings)
Free
#11in Medical
MyQuest for Patients screenshot 1
MyQuest for Patients screenshot 2
MyQuest for Patients screenshot 3
MyQuest for Patients screenshot 4

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.

What We Love

  • ๐Ÿš€ Easy appointment scheduling
  • ๐Ÿ“Š Convenient access to test results
  • ๐Ÿ‘ User-friendly app interface
  • ๐Ÿ’‰ Friendly and efficient phlebotomists
  • ๐Ÿ” Detailed lab result explanations

Room to Improve

  • ๐Ÿ› Buggy appointment scheduling
  • ๐Ÿ”‘ Frustrating login and account management
  • ๐Ÿ•ฐ๏ธ Slow lab result turnaround times
  • ๐Ÿค– Impersonal customer service
  • ๐Ÿ“‹ Repetitive insurance information entry
FITTR: Health & Fitness App#3

FITTR: Health & Fitness App by SQUATS

Health Tests, Workouts & Diets
Worth Considering
๐Ÿ’ช Health & Fitness
4.6๐Ÿ˜Š(2.4K ratings)
FreeIn-App Purchases
FITTR: Health & Fitness App screenshot 1
FITTR: Health & Fitness App screenshot 2
FITTR: Health & Fitness App screenshot 3
FITTR: Health & Fitness App screenshot 4
FITTR: Health & Fitness App screenshot 5
FITTR: Health & Fitness App screenshot 6

This app helps you proactively manage your health through a science-backed ecosystem. It integrates wearables, smart tools, and lab tests to help you understand your body, diagnose potential issues, and implement personalized lifestyle interventions for long-term well-being.

What We Love

  • ๐Ÿ‘ Excellent fitness and nutrition guidance
  • ๐Ÿ‘ Helpful and supportive community
  • ๐Ÿ‘ Customized diet and workout plans
  • ๐Ÿ‘ Comprehensive knowledge base
  • ๐Ÿ‘ Motivating transformation stories
  • ๐Ÿ‘ Easy to use app with useful features

Room to Improve

  • ๐Ÿ› Inconsistent customer support
  • ๐Ÿ› Buggy app performance issues
  • ๐Ÿ› Lack of flexibility in coach selection
  • ๐Ÿ› Difficulty tracking exercises and progress
  • ๐Ÿ› Excessive notification spam

More Health Diagnostic App apps to explore

FAQ about Health Diagnostic App

What is the best health diagnostic app for iPhone?
On/Go tops our health diagnostic app ranking as of July 2026, with a 4.8-star average from 52K App Store ratings, and it's free to download.
Yes โ€” 20 of the top health diagnostic app we rank are free to download, including On/Go and MyQuest for Patients.
On/Go has no ads and has no in-app purchases, according to its App Store listing as of July 2026.
The On/Go app provides convenient health and care solutions. It offers award-winning COVID-19 testing and rapid treatment options for all known variants. Additionally, it helps users manage common ailments like sniffles by providing quick access to effective treatments and trusted medical experts for diagnosis and care.
Key features include reliable COVID-19 testing with results in minutes, rapid access to treatment for COVID-19 when applicable, and a quick fix for sniffles with effective treatments and expert guidance. The app also integrates scientifically validated habit-sustaining techniques for lasting health changes.