Comparison

Osmosis vs Radiant Notes eLibrary

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

Head to head
About

Osmosis

This app helps medical students learn complex concepts faster and retain more information. It offers animated videos, flashcards, notes, and board-style questions to prepare for exams and build clinical skills.

Highlights
  • Animated medical videos
  • Spaced repetition flashcards
  • Board-style practice questions
  • Downloadable notes and videos
  • Clinical decision-making trees
  • Cross-platform syncing
Currently charting
Read full description

Struggling to understand medical concepts or prepare for the USMLE? Osmosis is the medical exam study app designed to help med students learn medicine faster, improve information retention and pass medical board exams with flying colours. Trusted by 8,000,000+ medical, nursing, PA, pharmacy and dental students, this medical learning app turns downtime into productive study time with an expansive library of medical videos, flashcards, quizzes, exam-style questions and more. Instead of memorizing isolated facts, Osmosis helps you learn how medical concepts connect - so that you can retain more information, study smarter and apply what you learn to exams and in clinical practice. And now, you can ask Osmosis AI for instant, evidence-based answers grounded in Elsevier medical textbooks and linked to Osmosis videos. Generate flashcards, quizzes, summaries and mnemonics on demand with AI so you never have to second-guess your source. EXAM PREP FOR EVERY US MEDICAL LICENSING EXAM • USMLE Step 1 & Step 2 • COMLEX-USA Level 1 & Level 2 • NCLEX-RN & NCLEX-PN • PANCE • ABFM / ABIM • UKMLA (UK) With Osmosis, everything in your medical studies connects so nothing gets lost. Flashcards, videos and notes work together to make every study session stress free and every exam prep hour more productive. Ready to learn smarter? DOWNLOAD today to start your FREE 7-DAY TRIAL. STUDY ANYWHERE, ANYTIME Download medical videos and exam questions for offline study on the commute, before rounds or between clinics. Sync across iPhone, iPad and web so you can learn wherever you are. WHY CHOOSE OSMOSIS? • 1000s of concise medical videos that simplify complex medical concepts and support visual learning • Medical flashcards that help you learn and retain key concepts, with concise explanations reviewed by medical experts • A custom quiz builder that transforms your study time so you can master medical material and ace your exams • Board-style practice exam questions with detailed explanations • 450+ high-yield summary notes with key points and diagrams from videos • Printable clinical decision-making trees to learn on the go • Spaced repetition guides what medical concepts to study next, focusing you on the areas where you need it the most YOUR ALL-IN-ONE MEDICAL LEARNING TOOLKIT From concept mastery to clinical reasoning, Osmosis turns complex medical material into clear, digestible learning experiences so that you can study with confidence and pass exams first time, every time. LEARN SMARTER Our videos and High-Yield medical study notes condense everything you need to learn and nothing you don't. Study efficiently and retain the medical knowledge that matters most for board exams and clinical practice. GET A PERSONALIZED, FLEXIBLE STUDY PLAN IN MINUTES Choose your learning goals and set your study hours, Osmosis handles the rest. Your daily study checklist shows which videos, exam questions and topics to learn each day. Add custom tasks like homework, practice exams and reminders to keep your medical studies on track. FOLLOW OSMOSIS ON SOCIAL: YouTube: youtube.com/osmosis TikTok: @learnbyosmosis Instagram: @osmosismed Facebook: @OsmoseIt X: twitter.com/OsmosisMed Bluesky: @osmosismed.bsky.social DOWNLOAD and start your FREE 7-DAY TRIAL today! Subscriptions are charged annually & automatically renew unless auto-renew is turned off at least 24-hours before end of the current period. Payment will be charged to iTunes Account at confirmation of purchase. Your iTunes Account will be charged the current annual subscription cost each year for renewal within 24-hours prior to end of current period. You can manage your subscriptions and turn off auto-renewal by going to your iTunes Account Settings any time after purchase. Any free trial will be interrupted when a paid subscription is purchased. Terms: www.osmosis.org/terms Privacy policy: www.osmosis.org/privacy Contact support@osmosis.org with any account/purchase queries.

About

Radiant Notes eLibrary

This app provides structured notes, practice questions, and mock exams for medical students and healthcare professionals. It includes treatment guides and a PDF reader for efficient study and exam preparation.

Highlights
  • High-yield structured notes
  • Organized MCQ practice
  • Mock exams and self-assessment
  • Treatment and management guides
  • PDF reading experience
Features
Read full description

Prepare smarter. Study better. Keep your medical resources organized in one place. Radiant Notes eLibrary is a focused medical learning and reference app designed for medical students, postgraduate trainees, and healthcare professionals. Access organized medical books, interactive MCQs, mock exams, and treatment guides — all through a clean and structured study experience. Medical Library Access your essential medical books and study resources in one place. Organized and famous Radiant Notes medical ebooks and notes Easy chapter and topic navigation Smooth, distraction-free reading Bookmarks for important content Quick access to your saved resources Comfortable reading experience, including Dark Mode Interactive MCQs Practice whenever and however you want. Interactive MCQ practice Topic-wise and subject-wise questions Real exam recalls across all specialties and a wide range of exams Practice by year or speciality Bookmark difficult questions Review repeated and recently added questions Track your performance and progress Mock Exams Test your knowledge under exam-style conditions. Timed mock examinations Exam-focused question sets Practice before the real exam Review your performance after each test Identify areas that need more revision Treatment Guide Access concise, structured treatment and management information. Topic-based treatment guides Practical clinical management summaries Exam-oriented revision points Organized for quick reference and revision Track Your Progress Know how you are performing as you study. Monitor your MCQ practice, mock exam performance, and overall progress to help you identify strengths and focus on areas that need more work. Study Your Way Whether you're preparing for postgraduate examinations, revising core medical subjects, reviewing clinical topics, or looking for a quick reference, Radiant Notes brings your essential study resources together in one focused platform. Read. Practice. Test. Review. Improve. Radiant Notes eLibrary — your medical study and reference library, all in one place. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Osmosis4 screens
Radiant Notes eLibrary4 screens

Verdict

The call

The clearest difference is rating: Osmosis at 4.8 against Radiant Notes eLibrary's 3.7. Osmosis also leads on ratings volume (3.9K vs 3) and chart position (#71 vs unranked). Radiant Notes eLibrary's advantage is update cadence (every 9 days vs monthly) and iOS requirement (13.0 vs 16.6). On price, ads, in-app purchases and monetization model 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. Osmosis sells 12 in-app purchases, starting at $16.99 per month and Radiant Notes eLibrary sells 4 in-app purchases, starting at $9.99 per 3 months. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Osmosis holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: Osmosis has 3.9K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Osmosis ships an update monthly, Radiant Notes eLibrary every 9 days. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

Scorecard5 real differences · 6 level
Osmosis versus Radiant Notes eLibrary: the parameters behind the verdict, then further details
ParameterOsmosisRadiant Notes eLibrary
PriceFreeFree
Rating4.8 (3.9K ratings) — better3.7 (3 ratings)
Positive reviews47.4% of reviews—
Number of ratings3.9K — better3
Update frequencyMonthlyEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#71 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.613.0 — better
Further details — not scored
Size70 MB131 MB
Age rating17+17+
DeveloperKnowledge DiffusionRafi Ullah

Customer experience

Osmosis

All ratings3,884 ratings
Positive95.6%
Neutral1.7%
Negative2.7%
Written reviews234 reviews
Positive47.4%
Neutral15.8%
Negative36.8%

Radiant Notes eLibrary

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

Osmosis

Reported bugs

5 issues
  • Verification email never sent
  • Videos won't play or keep restarting
  • Inability to access high-yield notes on app
  • Flashcards and quizzes not working properly
  • App getting stuck on loading/login screens

Requested features

5 requests
  • Add speech pathology to the platform
  • Provide Arabic subtitles for videos
  • Implement split-screen functionality
  • Allow editing of flashcards on mobile
  • Improve search and playlist features

Radiant Notes eLibrary

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Osmosis

Subscriptions12
  • Osmosis Full Access Monthly3 variants$16.991 Month
  • Clinical Sciences Monthly$16.991 Month
  • Osmosis Basic Sciences Monthly$16.991 Month
Show 9 more
  • Osmosis Suite Access Monthly$49.001 Month
  • Clinical Science 6 Month$129.006 Months
  • Clinical Science Access Yearly$169.001 Year
  • Basic Sciences Access 6 Month$179.006 Months
  • Osmosis Full Access 6 Month$179.996 Months
  • Osmosis Full Access Yearly$199.991 Year
  • Basic Sciences Access Yearly$199.991 Year
  • Osmosis Suite Access 6 Month$229.006 Months
  • Osmosis Suite Access Yearly$249.001 Year
4 purchases

Radiant Notes eLibrary

Subscriptions3
  • Three Month Subscription$9.993 Months
  • Half Year Subscription$17.996 Months
  • Annual Subscription$24.991 Year
One-time1
  • Lifetime Full Access$33.99

Questions

Is Osmosis free?
Osmosis is free to download, with in-app purchases available.
Is Radiant Notes eLibrary free?
Radiant Notes eLibrary is free to download, with in-app purchases available.
Which has better reviews, Osmosis or Radiant Notes eLibrary?
Osmosis is rated higher. Osmosis averages 4.8 out of 5 from 3.9K ratings, while Radiant Notes eLibrary averages 3.7 from 3 ratings.
Do Osmosis or Radiant Notes eLibrary have ads?
Neither Osmosis nor Radiant Notes eLibrary shows ads.
Which is updated more often, Osmosis or Radiant Notes eLibrary?
Osmosis ships an update monthly, and Radiant Notes eLibrary every 9 days. Most recently, Osmosis was updated on October 26, 2026 and Radiant Notes eLibrary on October 28, 2026.

Other comparisons