Comparison

Case Files Microbiology, 3e vs Micro Guide

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Case Files Microbiology, 3e

Master medical microbiology through interactive patient cases and USMLE-style questions. This app helps students learn essential concepts by applying them to real-life scenarios, preparing them for exams and clinical practice.

Highlights
  • 54 high-yield patient cases
  • USMLE-style review questions
  • Interactive study modes (Study, Exam, Bookmark)
  • Clear concept discussions
  • Progress tracking
  • Note-taking and tagging
Features
Read full description

LEARN MICROBIOLOGY IN THE CONTEXT OF REAL-LIFE PATIENTS AND PREPARE FOR THE USMLE STEP 1 - Experience with clinical cases is key to excelling on the USMLE Step 1 and shelf exams, and ultimately to providing patients with competent clinical care. Case Files: Microbiology provides 54 true-to-life cases that illustrate essential concepts in this field. Each case includes an easy-to understand discussion correlated to essential basic science concepts, definitions of key terms, microbiology pearls, and USMLE-style review questions. With Case Files, you'll learn instead of memorize. -Learn from 54 high-yield cases, each with board-style questions and key-point pearls -Master complex concepts through clear and concise discussions -Practice with review questions to reinforce learning -Polish your approach to clinical problem-solving -Perfect for medical and dental students preparing for course exams and the Boards This free application includes 1 sample case study from the 54 that are available with a subscription. Each case has been designed for the iPad and iPhone with interactive features: • Study/Exam/Bookmark modes with USMLE-style review questions. • In the Study mode, check the answers as you tackle the questions. • In the Exam mode, time yourself and review the answers after the time is up. • In the Bookmark mode, review only the questions you have flagged for further study. • File away correctly answered questions after each practice quiz. • Choose the number of questions in each practice quiz: 25, 50, 100, 150, 200, or all. • Opt to include questions from previous quizzes. • Learn further from interactive questions at the end of each case, with explanations. • Sort cases by name or by case number. • Take down notes using the Notes section for each case. • Study in horizontal or vertical mode on the iPhone and the iPad. • Store quiz scores to track your progress. • Highlight key points in cases. • Save to iCloud to use app on multiple devices • Choose preferred font sizes • Create tags • Search content About the Authors Eugene C. Toy, MD is a dual certified family physician and ob/gyn and is Academic Chief and Program Director for the Obstetrics and Gynecology residency at The Methodist Hospital in Houston, Texas. He also oversees the ob/gyn clerkship at Christus St. Joseph Hospital and is actively involved in teaching medical students. Cynthia R. Skinner DeBord, PhD is a member of the Adjunct Faculty in Biology at Tomball College in Tomball, Texas. She was formerly the microbiology course director at UT–Houston School of Medicine. Audrey Wanger, PhD is Associate Professor at the Department of Pathology and Laboratory Medicine at The University of Texas–Houston Medical School in Houston, Texas. Gilbert A. Castro, PhD is Vice President for Health Affairs and Vice President for Academic Affairs at The University of Texas at El Paso in El Paso, Texas. Donald Briscoe, MD is the Program Director of Family Practice Residency at The Methodist Hospital–Houston in Houston, Texas. James D. Kettering, PhD is Emeritus Professor of Microbiology at Loma Linda University Schools of Medicine and Dentistry in Loma Linda, California. Expanded Apps Terms of Use: https://expandedapps.com/terms-of-use/ Expanded Apps Privacy Policy: https://expandedapps.com/privacy-policy/

About

Micro Guide

Features
Read full description

Stop drowning in drug lists and bug charts. Antibiotics & Microbiology turns the hardest high-yield topics into clear, beautiful guides and exam-style quizzes you can master in minutes a day. Built for medical, pharmacy, nursing and dental students preparing for exams like USMLE Step 1, and for anyone who wants antibiotics and microbiology to finally make sense. ANTIBIOTICS: 25 GUIDES From penicillins, cephalosporins and carbapenems to vancomycin, fluoroquinolones, TB drugs, antifungals, antivirals, HIV and hepatitis C therapy. Each guide covers the mechanism, spectrum, clinical uses, side effects, interactions and resistance. MICROBES: 34 ORGANISMS Staph, Strep, Clostridia, Listeria, TB, E. coli, Pseudomonas, Neisseria, H. pylori, syphilis, Lyme and more. For each one you get key features, virulence factors, the diseases it causes, diagnosis and treatment. LAB: 21 STAINS & AGARS Gram, Ziehl-Neelsen, India ink, silver, PAS and Congo red stains, plus chocolate, MacConkey, Thayer-Martin, EMB, Sabouraud and more. Learn what each one shows and when to use it. QUIZ: 247 EXAM-STYLE QUESTIONS - 20 topics: mechanisms, drug of choice, side effects, clinical vignettes, toxins, resistance, zoonoses and more - Every answer has a clear explanation - 50/50 hints when you're stuck - Mixed Practice for quick random sets - Redo just your mistakes - Track your accuracy, progress and daily streak SMART STUDY TOOLS - Gram ID Flowchart: identify bacteria step by step - Spectrum Finder: see which drugs cover which bugs - Mechanism Map: where every antimicrobial hits - Empiric Therapy: typical first choices by syndrome - High-yield Mnemonics - Bacterial Toxins: mechanisms and classic diseases - Zoonoses & Vectors: from exposure to organism - Pregnancy: which antimicrobials are safe and which to avoid 9 LANGUAGES English, Arabic, French, Spanish, German, Hindi, Indonesian, Portuguese and Russian. The app follows your device language, and you can switch anytime. FREE TO START Lots of content is free. Unlock any locked item by watching a short video, or get Unlock Everything once to open all guides, quizzes and tools and remove ads forever. It's a one-time purchase, not a subscription. For educational purposes only. Not a substitute for professional medical advice, local guidelines or clinical judgment.

Screenshots

Case Files Microbiology, 3e4 screens
Micro Guide4 screens

Verdict

The call

The clearest difference is in-app purchases: Micro Guide at none against Case Files Microbiology, 3e's 5. Case Files Microbiology, 3e's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Case Files Microbiology, 3e sells 5 in-app purchases, starting at $8.99 per 7 days. Micro Guide asks for nothing beyond the download.

UpkeepUpdate frequency

Case Files Microbiology, 3e ships an update every 20 months, Micro Guide every 15 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 7 level
Case Files Microbiology, 3e versus Micro Guide: the parameters behind the verdict, then further details
ParameterCase Files Microbiology, 3eMicro Guide
PriceFreeFree
Rating3.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 20 monthsEvery 15 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size19 MB71 MB
Age rating12+17+
DeveloperExpanded AppsAhmed Alalem

In-app purchases

5 purchases

Case Files Microbiology, 3e

Subscriptions4
  • 1 Week$8.997 Days
  • Weekly Access$10.997 Days
  • Monthly Access$19.991 Month
Show 1 more
  • 1 Year$79.991 Year
One-time1
  • Lifetime Access$39.99
None

Micro Guide

No in-app purchases

Questions

Is Case Files Microbiology, 3e free?
Case Files Microbiology, 3e is free to download, with in-app purchases available.
Is Micro Guide free?
Micro Guide is free to download, with no in-app purchases.
Do Case Files Microbiology, 3e or Micro Guide have ads?
Neither Case Files Microbiology, 3e nor Micro Guide shows ads.
Which is updated more often, Case Files Microbiology, 3e or Micro Guide?
Case Files Microbiology, 3e ships an update every 20 months, and Micro Guide every 15 months. Most recently, Case Files Microbiology, 3e was updated on November 3, 2026 and Micro Guide on October 30, 2026.

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