Whether you're starting AP Biology or preparing for USMLE Step 1, BioFlash adapts to your level. 1,200+ expertly-curated flashcards across 24 comprehensive decks with scientifically-proven spaced repetition.
BioFlash grows with you. Select content that matches your current level and academic goals.
Build a rock-solid foundation with clear, accessible explanations of fundamental biology concepts.
Go beyond the basics with detailed mechanisms, pathways, and clinical correlations.
Master the nuances and edge cases that appear on high-stakes standardized exams.
One app for every stage of your biology education journey.
Aligned with College Board standards. Cover all 8 units with exam-focused content.
HL and SL topics covered. Perfect for Internal Assessments and final exams.
From Bio 101 to upper-division courses. Comprehensive coverage for any major.
All prerequisite courses covered. Build the foundation for medical school success.
Bio/Biochem section mastery. High-yield content mapped to AAMC guidelines.
First Aid-aligned content. Clinical correlations and high-yield associations.
Built by medical students and educators. Every feature designed to maximize your learning and exam scores.
Our algorithm schedules reviews at optimal intervals, so you remember more with less effort. The same system used by top medical students worldwide.
Every card written and reviewed by medical professionals and educators. Detailed explanations help you understand the "why" behind each answer.
Beautiful statistics show your study habits, retention rates, and mastery progress. Stay motivated with streaks and achievements.
Standard reviews, learn new cards, cram mode for exams, and quiz mode for self-testing. Study your way.
Home screen and lock screen widgets show due cards at a glance. Never miss a review session.
Study on the go with our companion Watch app. Quick quiz mode, study sessions, and complications to track your streak.
Crafted specifically for iOS with smooth animations, intuitive gestures, and Dark Mode support.
Study on your Mac with full keyboard shortcuts, resizable windows, and seamless sync across all your Apple devices.
1,200+ cards covering everything from basic biology to advanced medical concepts.
Amino acids, basic metabolism, vitamins, enzymes
65 cardsOrganelles, membrane transport, cell structure
55 cardsMendelian genetics, Punnett squares, inheritance
50 cardsComplex pathways, regulation, clinical correlations
70 cardsSignaling cascades, cell cycle regulation, apoptosis
60 cardsDNA replication, transcription, translation, repair
65 cardsMolecular genetics, epigenetics, gene regulation
55 cardsHardy-Weinberg, genetic drift, selection
45 cardsInnate/adaptive immunity, antibodies, disorders
60 cardsBacteria, viruses, fungi, parasites
70 cardsHeart mechanics, hemodynamics, ECG basics
55 cardsVentilation, gas exchange, acid-base
50 cardsNephron function, filtration, electrolytes
50 cardsDigestion, absorption, GI hormones
55 cardsHormones, feedback loops, metabolic regulation
55 cardsAction potentials, synapses, neurotransmitters
60 cardsBones, muscles, joints, movements
65 cardsBrain regions, pathways, cranial nerves
55 cardsHeart structure, vessels, circulation
50 cardsDrug mechanisms, pharmacokinetics, autonomic
55 cardsCardiovascular, CNS, antimicrobials
60 cardsEcosystems, biodiversity, natural selection
50 cardsPhotosynthesis, plant structure, development
45 cardsPCR, gel electrophoresis, blotting, CRISPR
50 cardsSelect from beginner, intermediate, or advanced content that matches your current goals.
Review cards and rate your recall. Our SM-2 algorithm handles the optimal scheduling.
Watch your retention soar as concepts move to long-term memory. Track your improvement.
Less than the cost of one textbook. Access 1,200+ cards across 24 decks.
Forever free
or $19.99/year (save 44%)
One-time purchase
7-day free trial on Pro. No credit card required. Cancel anytime.
Join thousands of students who improved their scores with BioFlash.
"BioFlash helped me score 132 on my MCAT Bio/Biochem section - up from 125 on my practice tests. The advanced cards cover exactly what AAMC tests on. Absolutely worth it."
"Went from a C+ to an A- in Biochemistry after using BioFlash for just 6 weeks. The detailed explanations finally made complex pathways click. Best study app I've ever used."
"Scored a 5 on AP Biology after using the beginner decks all semester. The spaced repetition meant I barely had to cram before the exam. Everything just stuck."
"The USMLE content is exactly aligned with First Aid. I used BioFlash alongside Anki and it filled all the gaps. Passed Step 1 with a 240+. Highly recommend."
"As an IB Biology HL student, I was struggling with the depth of content. BioFlash's intermediate decks were perfect. Got a 7 on my final exam!"
"Beautiful app, great content. I study 20 minutes daily on my commute. My GPA jumped from 3.4 to 3.8 after one semester. The Apple Watch app is clutch for quick reviews."
Join 50,000+ students who are mastering biology with BioFlash. From AP Bio fundamentals to MCAT mastery - we've got you covered.
Available on iPhone, iPad, Mac, and Apple Watch. Requires iOS 17.0 / macOS 14.0 or later.