Comparison

Osmosis vs Biochemistry Mastery

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

Biochemistry Mastery

Master biochemistry with over 400 practice questions, flashcards, and study strategies. Study offline anytime, anywhere, and track your progress. Upgrade for full access to all content and explanations.

Highlights
  • 400+ practice questions
  • 100+ terminology flashcards
  • Study strategies
  • Biochemistry mnemonics
  • Offline access
  • Progress tracking
Features
Read full description

Tired of poring over massive textbooks to study for your biochemistry exams? With Biochemistry Mastery you can maximize your study time and conquer your biochemistry classes anytime anywhere. Featuring over 400 practice questions, terminologies, mnemonics, and strategies, Biochemistry Mastery will help you improve your study habits, ace your biochem classes, and prepare for your future high-stakes exams. Whether you are pursuing your degree, preparing for graduate school, or simply interested in the subject, you can study for FREE with the most comprehensive biochemistry app on the market. We are always improving our app and adding new content at no additional cost. Biochemistry Mastery was developed to give you an edge by obsessively focusing on providing maximum learning in minimal time. Review biochem practice questions anywhere, anytime -- no network connection required! Install the free version today and jump start your studying! We have provided a limited free version of the app that you can try before deciding to upgrade. This version includes a limited amount of practice questions and basic progress metrics. Upgrade to the Premium version with a one-time, in-app purchase that includes lifetime access to: • 400+ practice questions, answers and complete explanations • 100+ Terminology flashcards • Proven strategies to help you ace your test • The most comprehensive list of biochemistry mnemonics on the market • Get immediate feedback to track your overall progress as you study and master new topics Study biochemistry anytime and anywhere, even without internet access!

Screenshots

Osmosis4 screens
Biochemistry Mastery4 screens

Verdict

The call

The clearest difference is ratings volume: Osmosis at 3.9K against Biochemistry Mastery's 37. Osmosis also leads on chart position (#134 vs unranked). Biochemistry Mastery's advantage is iOS requirement (9.0 vs 16.6). On price, rating, review sentiment and update cadence 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 10 in-app purchases, starting at $16.99 per month and Biochemistry Mastery sells 1 one-off in-app purchase. 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 4.6. That said, the two scores are not equally well evidenced: Osmosis has 3.9K ratings behind it against 37, so its average is the more settled of the two. Written reviews complicate that: 47% of Osmosis's written reviews are positive against 50% of Biochemistry Mastery's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard3 real differences · 8 level
Osmosis versus Biochemistry Mastery: the parameters behind the verdict, then further details
ParameterOsmosisBiochemistry Mastery
PriceFreeFree
Rating4.8 (3.9K ratings) — better4.6 (37 ratings)
Positive reviews47.4% of reviews50.0% of reviews — better
Number of ratings3.9K — better37
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#134 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.69.0 — better
Further details — not scored
Size70 MB64 MB
Age rating17+12+
DeveloperKnowledge DiffusiongWhiz, LLC

Customer experience

Osmosis

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

Biochemistry Mastery

All ratings35 ratings
Positive97.1%
Neutral0.0%
Negative2.9%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

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

Biochemistry Mastery

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Osmosis

Subscriptions10
  • Osmosis Full Access Monthly$16.991 Month
  • Osmosis Suite Access Monthly$49.001 Month
  • Clinical Science 6 Month$129.006 Months
Show 7 more
  • Osmosis Suite Access 3 Month$149.003 Months
  • 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
1 purchases

Biochemistry Mastery

One-time1
  • One time purchase to unlock all content (NOT a subscription).Free

Questions

Is Osmosis free?
Osmosis is free to download, with in-app purchases available.
Is Biochemistry Mastery free?
Biochemistry Mastery is free to download, with in-app purchases available.
Which has better reviews, Osmosis or Biochemistry Mastery?
Osmosis is rated higher. Osmosis averages 4.8 out of 5 from 3.9K ratings, while Biochemistry Mastery averages 4.6 from 37 ratings.
Do Osmosis or Biochemistry Mastery have ads?
Neither Osmosis nor Biochemistry Mastery shows ads.
Which is updated more often, Osmosis or Biochemistry Mastery?
Osmosis ships an update monthly, and Biochemistry Mastery monthly. Most recently, Osmosis was updated on November 1, 2026 and Biochemistry Mastery on November 2, 2026.

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