Anki is the dominant tool for USMLE Step 1 preparation, and for good reason. The spaced repetition algorithm surfaces cards at the right intervals, the Anking deck covers nearly every testable concept, and the community support is extensive. But Anki's dominance does not mean it is the right choice for everyone, and knowing its limitations helps you decide whether to use it as your primary tool or supplement it with something else.
Step 1 is a volume problem. Tens of thousands of facts across a dozen disciplines, compressed into a preparation window of weeks or months. Anki handles volume well. What it handles less well is helping you understand how all those facts connect to each other, which is exactly what the exam tests.
Anki's spaced repetition algorithm is genuinely well-suited to long-term retention. Cards you struggle with appear more frequently; cards you know solidly appear less often. For Step 1, where you need to retain basic science facts for months, this algorithm outperforms passive re-reading by a wide margin. The Anking deck, built and maintained by a large community of medical students, covers virtually every First Aid topic and integrates Pathoma and Sketchy content tags so you can filter by your current study block. If you are willing to invest the setup time, Anki delivers a well-organized, evidence-backed study system.
The main criticism of Anki for Step 1 is the management overhead. New students routinely spend days configuring deck settings, learning add-ons, and wrestling with suspension logic before reviewing a single card. The format is also isolated by nature. Each card is a standalone fact, and the exam rarely tests standalone facts. Step 1 questions demand that you connect a biochemical mechanism to a clinical presentation to a drug's side effect profile. Anki does not show you those connections spatially or contextually. You build them yourself, which is possible but requires deliberate effort beyond what the app provides.
Aphantasic medical students achieve comparable or higher grades (Taylor & Laming, 2025). Spatial encoding provides an alternative memorization pathway for anatomy, pharmacology, and clinical reasoning.
Anki is the right foundation for most Step 1 students, especially if you are comfortable with technology and willing to invest setup time. The limitation is structural: it delivers facts in isolation, and Step 1 tests connections. Pairing Anki with a tool that visualizes concept clusters will give you more complete preparation than either alone. Gridually's spatial encoding is based on memory research from the University of Chicago, University of Bonn, and Macquarie University.
Anki with the Anking deck is the most popular choice due to its spaced repetition algorithm and community-built content. However, it requires significant setup time. Apps like Gridually offer a more structured visual approach that can complement or replace traditional flashcard tools depending on your learning style.
Most students using the Anking deck work through 20,000 to 30,000 cards over several months. This volume makes scheduling and prioritization critical. Any app you choose needs robust filtering and progress tracking to manage a deck this size effectively.
Yes. Research on spatial cognition suggests that associating information with positions and visual clusters improves recall under pressure. For Step 1, where you must rapidly retrieve and connect facts during a timed exam, spatial encoding provides an additional retrieval pathway that pure text-based repetition does not.