Walk into the AP exam knowing you know it.
AP, SAT, A-Levels, or finals. Turn your notes, a textbook chapter, or a review video into a study kit. Then spaced repetition keeps every topic in your head up to test day, and a Feynman teach-back shows you're ready, not just busy.
The same engine, tuned to your workload.
Notes to a study kit
Drop in your notes, a chapter, or a review video. Synapsi builds the summary, flashcards, and quiz for the exact topics on the test.
Feynman finds the gaps
Explain a topic in plain English. An AI tells you what you missed, so you study the weak spots, not the ones you already know.
Spaced repetition to the date
Real FSRS scheduling keeps every topic in rotation right up to test day.
Four steps, every lecture.
Add the material
Upload notes, a chapter, or paste a review video.
Get the kit
Summary, flashcards, and a quiz on the test's topics.
Drill
Spaced repetition keeps weak topics coming back until they stick.
Check it stuck
Feynman teach-back to be sure before the exam, not surprised during it.