Comparison

USMLE Mastery vs Peptify

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

Head to head
About

USMLE Mastery

Prepare for medical licensing exams with a comprehensive study tool. Access thousands of practice questions with detailed explanations, track your progress with analytics, and create custom tests. Study offline and stay updated with the latest exam guidelines.

Highlights
  • Thousands of practice questions
  • Detailed explanation for each question
  • Performance analytics
  • Customizable practice tests
  • Offline access
  • Regular updates
Features
Read full description

USMLE Mastery is your ultimate companion for success on the United States Medical Licensing Examination (USMLE). This comprehensive study tool is designed to help you excel in all steps of the USMLE, including Step 1: Basic Sciences, Step 2 CK: Clinical Knowledge, and Step 3: Clinical Skills and Advanced Clinical Knowledge. With USMLE Mastery, you have access to thousands of high-quality questions covering all the essential topics for each exam step. Each question comes with detailed explanations to help you understand the reasoning behind the answers, ensuring you build a strong foundation of knowledge. Track your progress with in-depth performance analytics, which help you identify your strengths and weaknesses. This allows you to focus your study efforts on areas that need improvement, making your preparation more efficient and effective. You can create customizable practice tests tailored to your specific study needs. Choose the number of questions, topics, and difficulty level to craft the perfect exam for your preparation. Custom Practice Tests: Automatically save questions you find challenging and create personalized tests to target and improve on your weaker areas. USMLE Mastery also offers offline access, so you can study anytime, anywhere, without the need for an internet connection. The app is regularly updated to reflect the latest USMLE guidelines and question formats, ensuring that you stay current with the most recent changes in the exam. USMLE Mastery is more than just a question bank; it’s a comprehensive study tool that helps you learn, practice, and master the material needed to pass the USMLE exams. Whether you're in medical school or a professional refreshing your knowledge, USMLE Mastery provides the resources you need to achieve your goals. --- Auto-renewable subscriptions are available from the App Store for USMLE Mastery. • Payment will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration/price selected) unless auto-renew is turned off at least 24 hrs before the end of the current period. • Account will be charged for renewal within 24-hours prior to the end of the current period • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. Terms of Use: https://usmle.hubtests.com/terms Privacy Policy: https://usmle.hubtests.com/privacy

About

Peptify

Features
Read full description

Peptify is a free, evidence-backed reference tool for peptide researchers. Whether you're reconstituting a new vial, building a multi-peptide protocol, or tracking daily doses, Peptify puts the science at your fingertips. FEATURES Peptide Database Browse 109+ research peptides with dosage ranges, half-lives, storage temperatures, mechanisms of action, and sequence data. Includes popular peptides like BPC-157, tirzepatide, semaglutide, ipamorelin, and more. Reconstitution Calculator Instantly calculate mg/mL concentration, mcg per dose, and syringe pull volume. Works with any vial size and lyophilized peptide mass. Dosage & Sequence Calculator Convert between dosage units and calculate peptide molecular weight from amino acid sequences. Stack Builder Design custom multi-peptide protocols on weekly timelines. Choose from pre-built stacks (Glow, KLOW, Wolverine) or create your own. Share your stack as a poster image. Daily Dose Log Track your research activities with a calendar view, history, and streaks. All data stored locally on your device. Inventory Manager Track vial counts, reconstitution dates, and expiry dates. Never lose track of your supplies. Reminders Set custom reminders with notifications so you never miss a dose. Clinical Trials Search Search active clinical studies from ClinicalTrials.gov directly in the app. Literature Search Access peptide research papers from Europe PMC. AI Search Ask questions in plain English and get answers sourced from the peptide database and documentation. Supplier Directory Find trusted peptide suppliers and vendors. Injection Site Reference Visual guide for injection sites and techniques. PRIVACY Peptify is built for researchers who care about privacy. All data is stored locally on your device. No account is required to use the app. If you sign in, your data syncs across your devices via encrypted connection. No personal data is collected, sold, or shared. Ever. EDUCATIONAL USE ONLY Peptify is an educational reference tool for scientific research. It is not medical advice and is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified professional for medical decisions. SUPPORT Have questions, feedback, or feature requests? Visit https://www.peptify.info/support or email us at peptify.info@gmail.com LINKS Website: https://www.peptify.info Privacy Policy: https://www.peptify.info/privacy Terms of Use: https://www.peptify.info/terms

Screenshots

USMLE Mastery4 screens
Peptify3 screens

Verdict

The call

The clearest difference is in-app purchases: Peptify at none against USMLE Mastery's 2. Peptify also leads on device support (3 vs 1). On price, update cadence, ads and iOS requirement 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. USMLE Mastery sells 2 in-app purchases, starting at $9.99 per month. Peptify asks for nothing beyond the download.

UpkeepUpdate frequency

USMLE Mastery ships an update monthly, Peptify fortnightly. The most recent releases landed on September 30, 2026 and October 13, 2026 respectively.

Scorecard2 real differences · 7 level
USMLE Mastery versus Peptify: the parameters behind the verdict, then further details
ParameterUSMLE MasteryPeptify
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size9 MB44 MB
Age rating4+17+
DeveloperCargo Teleport IncDANIEL VILLAREAL

In-app purchases

2 purchases

USMLE Mastery

Subscriptions1
  • Premium monthly subscription$9.991 Month
One-time1
  • Lifetime version$29.99
None

Peptify

No in-app purchases

Questions

Is USMLE Mastery free?
USMLE Mastery is free to download, with in-app purchases available.
Is Peptify free?
Peptify is free to download, with no in-app purchases.
Do USMLE Mastery or Peptify have ads?
Neither USMLE Mastery nor Peptify shows ads.
Which is updated more often, USMLE Mastery or Peptify?
USMLE Mastery ships an update monthly, and Peptify fortnightly. Most recently, USMLE Mastery was updated on September 30, 2026 and Peptify on October 13, 2026.

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