Best Diagnostic Tests Apps

237+ iOS apps curated and reviewed

4.3 avg rating
18 free apps
Updated September 2026

From beginner-friendly picks to power-user tools, our diagnostic tests list covers 237+ iPhone apps updated through September 2026. Compare ratings, prices, and screenshots in one place.

Compare top Diagnostic Tests Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Phone Doctor PlusPhone Doctor PlusFree4.4★ (328)YesNoSep 2026
2Guide to Diagnostic TestsGuide to Diagnostic TestsFree4.6★ (35)NoYesAug 2026
3Davis’s Lab & Diagnostic TestsDavis’s Lab & Diagnostic TestsFree4.7★ (84)YesYesSep 2026
4Laboratory Diagnostic TestsLaboratory Diagnostic TestsFree4.9★ (13)YesYesJul 2026
5Manual Lab Diagnostic TestsManual Lab Diagnostic TestsFree5.0★ (2)YesYesMay 2026
6Davis Lab and Diagnostic TestsDavis Lab and Diagnostic TestsFree5.0★ (2)NoYesAug 2026
7Guide to Diagnostic Tests 7edGuide to Diagnostic Tests 7edFree1.5★ (2)YesYesJul 2026
8Lab Notes & Diagnostic TestsLab Notes & Diagnostic TestsFree5.0★ (8)YesYesJul 2026

Top Picks for Diagnostic Tests

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

  • 🚀 Extensive audio testing
  • 👍 Comprehensive diagnostics
  • 🔍 Detailed phone status report
  • 💡 Helpful for buying/selling used phones
  • 👍 Easy to use
  • 🚀 Quick and efficient

Room to Improve

  • 🐛 Occasional crashes
  • 🔧 Lacks troubleshooting guidance
  • 🔍 Some tests don't work as expected
  • 🔧 Outdated for newer devices
  • 🔧 Confusing instructions in some cases
Guide to Diagnostic Tests#2

Guide to Diagnostic Tests by Unbound Medicine, Inc.

Evidence-based recommendations
Strong Contender
🏥 Medical
4.6(35 ratings)
FreeIn-App Purchases
Guide to Diagnostic Tests screenshot 1
Guide to Diagnostic Tests screenshot 2
Guide to Diagnostic Tests screenshot 3
Guide to Diagnostic Tests screenshot 4
Guide to Diagnostic Tests screenshot 5

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.

More Diagnostic Tests apps to explore

FAQ about Diagnostic Tests

What are the best diagnostic tests apps for iPhone?
Phone Doctor Plus tops our diagnostic tests apps ranking as of September 2026, with a 4.4-star average from 328 App Store ratings, and it's free to download.
Yes — 18 of the top diagnostic tests apps we rank are free to download, including Phone Doctor Plus and Guide to Diagnostic Tests.
Phone Doctor Plus shows ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 237+ diagnostic tests apps on the iOS App Store as of September 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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