Android app · early access

Turn your notes into practice that sticks.

Give Deckiy your notes, slides or vocab list. It finds the key ideas, writes questions that make you think, and keeps coming back to whatever you haven't mastered yet.

Get early access See how it works
  • AP
  • SAT
  • ACT
  • Vocab
  • Any class

How it works

From your notes to mastery, in three steps

1

Add what you're studying

Paste your notes, upload a PDF, Word document or slides, or drop in a vocab list. Deckiy reads it in seconds to a couple of minutes, and you can watch every step as it works.

  • PDF, Word, PowerPoint, text or pasted notes
  • Vocab lists in most common formats, read without waiting on the AI
Deckiy reading a set of notes, with progress rings for each step
2

Deckiy maps it out

It pulls out the concepts, facts and connections that a teacher could test, and spots the misconceptions students usually fall for. Everything comes from your material, not the internet.

  • A knowledge map of how your ideas connect
  • Concepts it can't find in your notes are left out
The summary of what Deckiy understood: concepts, topics and connections
3

Practice that adapts to you

Every question is aimed at something you haven't nailed yet. Leave out a key idea and the next question goes straight at it. Get it right and Deckiy brings it back just before you'd forget it.

  • Instant feedback with the why behind every answer
  • Mastery tracked for every single concept
A correct answer with its explanation, XP and the concept's mastery going up

Features

Built to make studying actually work

Questions that make you think

Multiple choice with a near-miss answer that's almost right, passage questions you actually have to read, plus fill-ins, matching and short answers graded by AI.

Knows what you know

Deckiy tracks mastery for every concept, tells recognizing an answer apart from recalling it, and schedules reviews so nothing quietly fades.

Explains the why

Every answer comes with a short explanation of why it's right and what the trap was. Want more? Ask Deckiy to go deeper.

Streaks, XP and achievements

Set a daily goal, keep your streak alive and level up. XP rewards real effort, so guessing fast doesn't count.

Study with friends

Add friends, climb the leaderboard and challenge each other to timed study battles on the same material.

Deckiy has energy too

Writing new questions uses Deckiy's AI energy, which refills over time. When he's sleepy, you can still practice everything you've already made.

Exam modes

Ready for the big tests

Pick an exam and Deckiy follows its real structure and question styles, using your own notes where you have them.

APAdvanced Placement

Stimulus-based multiple choice, short answers and essays (DBQ and LEQ), built around each course's units and skills.

  • U.S. History
  • World History
  • European History
  • U.S. Government
  • Biology
  • Psychology
  • English Language
  • Calculus AB
  • Other AP courses

SATDigital SAT

Reading & Writing and Math in the digital format, including the second module that gets harder or easier depending on how the first one went.

  • Reading & Writing
  • Math
  • Timed modules

ACTACT

Practice across every section, with questions written in the ACT's style and timing.

  • English
  • Math
  • Reading
  • Science

Meet Deckiy

A study buddy with a personality

Deckiy is a small blue gecko who reacts to how you're doing. He cheers when you nail it, and he gets sleepy when his AI energy runs low.

Deckiy jumping and cheering
Nailed itA great session gets a celebration.
Deckiy reading a book
On itReading your notes while you wait.
Deckiy scratching his head
Hmm, not quiteA miss means a follow-up question.
Deckiy curled up asleep
RechargingOut of energy, but your saved questions still work.

Your data

Your notes stay yours

  • Deckiy keeps the text of your study material, never the original files.
  • Your notes are sent to the AI only to build your questions.
  • Download all your data or delete your account from Settings, any time.
Read the privacy summary
A session summary with XP, accuracy and what to study next

FAQ

Questions, answered

Is Deckiy free?

Yes. The free plan gives you daily AI energy for new questions, and practicing questions you've already made never uses energy. A Pro plan with much more energy will come later for students who study a lot.

What can I study with it?

Anything you have notes for: class notes, study guides, textbook chapters, slides or vocab lists. Upload a PDF, Word or PowerPoint file, or paste text. There are special modes for AP courses, the SAT and the ACT.

Does the AI make things up?

Deckiy builds questions from your material, and every new question is checked by a second AI before you see it. Questions that aren't supported by your notes, are ambiguous or are too easy to guess are thrown out. If one ever looks wrong, you can report it in the app.

Which phones does it work on?

Deckiy is an Android app for Android 8.0 and newer. There is no iPhone version yet.

When can I get it?

Deckiy is in early access now. Leave your email below and we'll let you know as soon as it's ready to download.

Study smarter with Deckiy

Deckiy is coming to Google Play. Join early access and we'll email you when it's ready.