Best Diagnostic Tests Apps

206+ iOS apps curated and reviewed

4.5 avg rating
18 free apps
Updated July 2026

From beginner-friendly picks to power-user tools, our diagnostic tests list covers 206+ iPhone apps updated through July 2026. Compare ratings, prices, and screenshots in one place.

Compare top Diagnostic Tests Apps (July 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Phone Doctor PlusPhone Doctor PlusFree4.4β˜… (328)YesNoAug 2026
2Phone DiagnosticsPhone DiagnosticsFree3.8β˜… (86)NoYesAug 2026
3Clearvue AppClearvue AppFreeβ€”NoNoMay 2026
4Davis’s Lab & Diagnostic TestsDavis’s Lab & Diagnostic TestsFree4.7β˜… (84)YesYesMay 2026
5Guide to Diagnostic TestsGuide to Diagnostic TestsFree4.6β˜… (35)NoYesAug 2026
6Laboratory Diagnostic TestsLaboratory Diagnostic TestsFree4.9β˜… (13)YesYesJul 2026
7Davis Lab and Diagnostic TestsDavis Lab and Diagnostic TestsFree5.0β˜… (2)NoYesMay 2026
8PhoneTest.AppPhoneTest.AppFree5.0β˜… (6)NoNoMay 2026

Top Picks for Diagnostic Tests

Phone Doctor Plus#1

Phone Doctor Plus by Idea Mobile Tech inc.

Editor's Choice
πŸ”§ Utilities
4.4😊(328 ratings)
FreeAds
Phone Doctor Plus screenshot 1
Phone Doctor Plus screenshot 2
Phone Doctor Plus screenshot 3

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.

What We Love

  • πŸš€ Extensive audio testing
  • πŸ‘ Comprehensive diagnostics
  • πŸ” Detailed phone status report
  • πŸ’‘ Helpful for buying/selling used phones

Room to Improve

  • πŸ› Occasional crashes
  • πŸ”§ Lacks troubleshooting guidance
  • πŸ” Some tests don't work as expected
Phone Diagnostics#2

Phone Diagnostics by HITEK_NOVA

Test & Find Repair Shop
Strong Contender
πŸ”§ Utilities
3.8(86 ratings)
FreeIn-App Purchases
Phone Diagnostics screenshot 1
Phone Diagnostics screenshot 2
Phone Diagnostics screenshot 3
Phone Diagnostics screenshot 4
Phone Diagnostics screenshot 5
Phone Diagnostics screenshot 6

Easily test and check all mobile device functionalities. This app is useful before purchasing a device, sending it for repair, or after receiving it back. It also helps you locate nearby repair shops.

Clearvue App#3

Clearvue App by Reflow Hub

Worth Considering
πŸ”§ Utilities
0.0(0 ratings)
Free
Clearvue App screenshot 1
Clearvue App screenshot 2
Clearvue App screenshot 3
Clearvue App screenshot 4
Clearvue App screenshot 5

Diagnose your iPhone's hardware with comprehensive tests. This utility checks your touchscreen, cameras, audio, and buttons to provide a reliable health summary. It's perfect for troubleshooting, upkeep, or confirming a device's condition before selling.

More Diagnostic Tests apps to explore

4
Davis’s Lab & Diagnostic Tests
Davis’s Lab & Diagnostic Tests
Davis’s Lab & Diagnostic Tests
with Nursing Implications
Free

This app provides comprehensive guidance on hundreds of diagnostic tests, including interpretation of results, patient preparation, and post-test care. It's designed for nurses and healthcare professionals to understand and implement critical test procedures effectively.

Over 400 lab and diagnostic test monographsSubspecialty test coverageNursing implications and clinical judgment sections
πŸ₯ Medical
(84)
free with in-app purchases
5
Guide to Diagnostic Tests
Guide to Diagnostic Tests
Guide to Diagnostic Tests
Evidence-based recommendations
Free

Access evidence-based information on over 450 diagnostic tests, including lab work, imaging, and therapeutic monitoring. This resource helps healthcare professionals quickly find answers to common questions about test selection, interpretation, and patient preparation.

450+ diagnostic testsEvidence-based recommendationsAlgorithms, tables, and charts
πŸ₯ Medical
(35)
free with in-app purchases
6
Laboratory Diagnostic Tests
Laboratory Diagnostic Tests
Laboratory Diagnostic Tests
Davis's Comprehensive Handbook
Free

This comprehensive manual provides essential information on laboratory and diagnostic tests, focusing on nursing implications and clinical judgment. It helps healthcare professionals understand test procedures, interpret results, and deliver quality patient care with updated terminology and a student-friendly design.

Nursing implications and clinical judgment focusAlphabetical test listing for quick referenceIntegrated index for multiple search options
πŸ₯ Medical
(13)
free with in-app purchases
7
Davis Lab and Diagnostic Tests
Davis Lab and Diagnostic Tests
Davis Lab and Diagnostic Tests
Nursing Implications 9th Ed
Free

This medical reference app provides comprehensive information on lab and diagnostic tests. It helps users understand test procedures, interpret results, and offer quality patient care with detailed nursing implications, common uses, and interfering factors.

Alphabetical listing of testsSearchable by abbreviation, synonym, diseasePotential Nursing Problems tables
πŸ₯ Medical
(2)
free with in-app purchases
8
PhoneTest.App
PhoneTest.App
PhoneTest.App
Better than PhoneCheck
Free

Diagnose hardware and system issues on your iPhone with comprehensive tests. Offers both quick and in-depth diagnostic modes to pinpoint problems.

Hardware diagnosticsSystem diagnosticsExpress test mode
πŸ”§ Utilities
(6)
free
9
Manual Lab Diagnostic Tests
Manual Lab Diagnostic Tests
Manual Lab Diagnostic Tests
With Nursing Implications
Free

This app provides comprehensive information on laboratory and diagnostic tests, including their physiological basis, reference values, and nursing implications. It helps healthcare professionals and students understand test results, plan care, and educate patients. The app offers offline access and smart search functionality.

Detailed test informationPhysiological and pathophysiological understandingReference values with age variations
πŸ₯ Medical
(2)
free with in-app purchases
10
Lab Notes & Diagnostic Tests
Lab Notes & Diagnostic Tests
Lab Notes & Diagnostic Tests
Nurses' Guide to 400+ Tests
Free

This app serves as a portable reference for nurses, providing essential information on over 400 lab and diagnostic tests. It includes details on preparation, patient care, panic levels, and visual aids, with offline access after initial download.

Covers 400+ lab and diagnostic testsIncludes radiography, imaging, and endoscopyIdentifies panic lab levels and nurse alerts
πŸ₯ Medical
(8)
free with in-app purchases
11
Mental Health Tests
Mental Health Tests
Mental Health Tests
by Mind Diagnostics, Inc.
Free

This app offers a quick way to assess potential symptoms of various mental health conditions. It provides a range of tests to help users understand if they might be experiencing issues like depression, anxiety, or addiction. Recovery is possible, and early assessment can be a crucial first step.

Symptom assessment for mental health conditionsTests for depression and anxietyADHD and PTSD assessment
πŸ₯ Medical
(89)
ad-supported
12
Guide to Diagnostic Tests 7ed
Guide to Diagnostic Tests 7ed
Guide to Diagnostic Tests 7ed
450 Lab & Microbiology Tests
Free

This medical app provides essential guidance on over 450 diagnostic tests, including the latest molecular and genetic advancements. It covers various medical specialties and offers diagnostic algorithms, cost details, and literature citations. A subscription unlocks full content and updates.

Covers 450+ diagnostic testsIncludes molecular and genetic testsDiagnostic algorithms
πŸ₯ Medical
(2)
free with in-app purchases
13
Manual Lab and Diagnostic Test
Manual Lab and Diagnostic Test
Manual Lab and Diagnostic Test
Fischbach - Step-by-Step Guide
Free

This medical reference app provides nurses and health professionals with step-by-step guidance on laboratory and diagnostic tests. It offers detailed information on patient preparation, procedure interpretation, and aftercare, with updates on emerging health considerations.

Step-by-step guidance on diagnostic testsPatient preparation and aftercare instructionsInterpretation of test results
πŸ₯ Medical
(8)
free with in-app purchases
14
Blood Test Results: Lab Values
Blood Test Results: Lab Values
Blood Test Results: Lab Values
Lab Test Reference Ranges
Free

This app serves as a pocket guide for healthcare professionals and students, offering explanations and reference ranges for over 300 blood tests. It features a user-friendly interface with color-coded categories and a search tool for easy navigation and interpretation of lab results.

Explanations for 300+ blood testsReference ranges (metric/imperial)Thorough interpretation of results
πŸ“š Education
(1)
free
15
Laboratory Diagnostic Test
Laboratory Diagnostic Test
Laboratory Diagnostic Test
Laboratory Normal Values
Free
πŸ₯ Medical
(0)
16
OBD JScan
OBD JScan
OBD JScan
by Piotr Bialic
Free

This app provides advanced diagnostics for Jeep, Chrysler, and Dodge vehicles. It allows users to read and clear trouble codes, view live sensor data, and access settings across all vehicle modules, including ABS and transmission.

Read/Clear Diagnostic Trouble CodesAccess Live Data from all sensorsView vehicle settings
πŸ”§ Utilities
(1.3K)
free with in-app purchases
17
Laboratory & Diagnostic Tests
Laboratory & Diagnostic Tests
Laboratory & Diagnostic Tests
Laboratory Values & Checker
$9.99
πŸ₯ Medical
(0)
18
On/Go
On/Go
On/Go
Delightful health & care
Free

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.

COVID-19 testing and treatmentRapid diagnosis and treatment for snifflesAccess to medical experts
πŸ₯ Medical
(52K)
free
19
xRapid-Malaria: the automated diagnostic test
xRapid-Malaria: the automated diagnostic test
xRapid-Malaria: the automated diagnostic test
by ianxen ltd
Free

This application enables healthcare professionals to rapidly and accurately diagnose malaria using smartphone microscopy. It analyzes traditional blood smear slides with AI for precise results, offering a cost-effective and accessible solution for global health workers.

Diagnoses malaria from microscope slidesOver 98% accuracyDetects all five Plasmodium types
πŸ₯ Medical
(0)
free
20
GPS Diagnostic: Satellite Test
GPS Diagnostic: Satellite Test
GPS Diagnostic: Satellite Test
Precise Coordinates & Altitude
$2.99

This app tests your device's GPS module, providing precise navigation parameters and diagnosing location issues. It supports multiple satellite systems and offers advanced coordinate conversions through an in-app purchase.

Test GPS moduleFast GPS lock timePrecise navigation parameters
πŸ—ΊοΈ Navigation
(546)
free with in-app purchases

FAQ about Diagnostic Tests

What are the best diagnostic tests apps for iPhone?
Phone Doctor Plus tops our diagnostic tests apps ranking as of July 2026, with a 4.4-star average from 328 App Store ratings, and it's free to download.
Yes β€” 18 of the top diagnostic tests apps we rank are free to download, including Phone Doctor Plus and Phone Diagnostics.
Phone Doctor Plus shows ads and has no in-app purchases, according to its App Store listing as of July 2026.
We track 206+ diagnostic tests apps on the iOS App Store as of July 2026, ranked by rating, recency, and analysis of real user reviews.
Phone Doctor Plus offers over 40 types of hardware and system diagnostic tests to help identify potential issues with your smartphone. It also provides system monitoring for hardware, battery, memory, and storage, along with tracking network usage and daily charging cycles.
Key features include more than 40 diagnostic tests, system monitoring of hardware, battery, memory, and storage, daily recording of battery capacity and charging cycles, and tracking of network usage. The latest edition also supports the iPhone 15 series.

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