Mentis turns anything you need to remember into flashcards, then schedules every review so it actually sticks.

SPACED REPETITION THAT ADAPTS
Mentis tracks how well you know each card and schedules its next review for the moment you are about to forget it. Cards you find hard come back sooner. Cards you know well drift further out. You spend your time on the material that needs it.

MEET SPARK, YOUR STUDY BUDDY
Stuck on a card? Ask Spark. It explains answers in plain words, gives examples and memory tricks, and can quiz you on any deck. Spark is an AI and can make mistakes: every conversation is screened for safety, and any reply can be reported.

STUDY IN BOTH DIRECTIONS
Every card can be studied front to back, back to front, or both. Each direction is scheduled independently, because recognizing something and recalling it are different skills.

BUILT FOR BIG DECKS
Thousands of cards in a single deck stay fast. Search, filter and browse without waiting around.

MAKE CARDS QUICKLY
Type them yourself, paste in your notes, or let AI draft a deck from your material and edit what it produces. Add an image to either side of a card.

A LIBRARY TO START FROM
Discover holds ready-made decks across languages, sciences, history, vocabulary and more. Subscribe to one and it stays current as its author improves it.

STUDY WITH OTHER PEOPLE
Create a group, share decks with it, and follow how everyone is progressing.

QUIZ GAMES
Multiple choice, true or false and other modes for when you want a change from plain review.

KEEP THE HABIT
Daily goals, streaks, levels and XP, and progress stats that show what you have learned and what is coming up next.

WORKS OFFLINE
Study without a connection. Your reviews sync when you are back online.