Actually understand it before the test.

Generate fast, interactive lessons on any subject.

Algebra basicsDefinite integralsCalculus for AP and A-LevelDecimals for Grade 5Probability and statisticsTransformations on a gridThe unit circle
Bite-sized lessonsBacked by science3M+ learners

How Fenzo works

The perfect study plan has never been created. Until now.

Tell Fenzo what you need to learn.

Ask a question, or upload your homework or syllabus.

Test Prep

Don't take an exam without doing this first.

Smarter prep for every test — from your algebra quiz to the SAT.

  • Mock examsTimed and weighted like the real deal
  • DiagnosisDive deep into your performance
  • PrimersFocused study guides for your goals
  • Practice setsQuizzes and flashcards to stay sharp
See Test Prep

FlashcardsComing soon

Review less. Remember more.

Generate smart flashcards from your own notes — designed to make it stick faster.

  • Spaced repetitionCards resurface at the perfect moment
  • Easy uploadUpload your notes, get a deck in seconds
  • Beyond definitionsHelps you explain it, not just name it
  • Study anywherePractice whenever you have a spare moment

Book Summaries

Understand the book, not just the plot.

Summarize any book in seconds, then turn it into lessons you work through.

  • Any book, any timeSummarize the actual reading from your class
  • Themes & charactersFollow ideas as they develop across the book
  • Quotes worth citingWith the context that makes them mean something
  • Essay-readyUnderstand it well enough to have an argument about it
See book summaries

Not sure where to start?

Try a course or study guide generated by other students.

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Backed by the science of learning.

Every Fenzo lesson is designed for engagement and knowledge retention.

Active learning > passive learning.

59%
Passive
73%
Active

Average pass rate · Freeman et al., PNAS 2014

What the science says

Students who get hands-on are 1.5× more likely to pass their class.

How Fenzo does it

Every Fenzo lesson is interactive. No passive reading or watching, ever.

AI atrophy is real.

You work through itAI does it for you
what stayswith you
Right after learningWeeks later

Skill retention over time · with vs. without practice

What the science says

Offloading thinking to AI erodes the very skills you're trying to build.

How Fenzo does it

Fenzo makes you do the thinking — guided, but never done for you.

Answers ≠ understanding.

Retrieval practiceRe-reading
5 min2 days1 week

Long-term recall · retrieval vs. re-reading

What the science says

Recalling information beats re-reading it for building durable understanding.

How Fenzo does it

Lessons weave in quizzes and recall prompts, so it sticks.

Start with the subject
you need help with the most.

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