Study-material review app · Android · iPhone

Before you forget,
we ask.

Upload lecture PDFs, slides or Word files. AI writes questions on the key ideas, and a notification asks you one right when your memory starts to fade.

Sign up and start on the free plan right away.

See how it works ↓
Mirimi · now

Q. A transaction runs completely, or not at all.

Correct!We'll ask this one again in three days. The gap grows each time you get it right.
Not quite — the answer is OAtomicity: all of it is applied, or none of it is. We'll ask again tomorrow.

Tap an answer

How it works

Upload your study material.
Mirimi remembers when.

Upload your material

Pick a PDF, PowerPoint, Word or text (.txt, .md) file, paste text, or send a file with Share from chat or mail. Tables keep their rows and columns, and text in scans and images is read on your phone. The original file never leaves your phone — only the extracted text is saved.

Upload screen

Get questions

AI writes questions on the key concepts of your material, not trivia like the numbers inside an example.

Multiple-choice question

Review before you forget

Missed questions come back soon; the ones you get right come back at growing intervals. You choose the times, days and quiet hours — and if you rarely answer at a time, the coach moves it to when you actually study and tells you (you can undo). A weekly coach report arrives on Sunday evening.

Notification settings
Features

Only what's due today,
one button

Today's questions are gathered with an estimate of how long they take. Right answers make it harder and misses make it easier — format and difficulty adapt as you go.

Today's review screen

Concepts first,
then questions

With new material, tap through its key concepts before the questions. Tap the key terms inside each explanation to highlight them.

Concepts-first screen

See the sentence it came from

When you miss, the explanation shows which sentence of your material the question was built on, so you can check the AI's work.

Explanation with the source sentence

Your memory at a glance

A memory curve shows how much of each material you still hold and when the next review is due.

Memory curve screen

Your study time,
at a glance

See how long you studied today, this week or any period — by day, by hour and by material. The weekly coach report includes your study time and the hours you study most.

Study time screen

Group a course,
review it together

Group the materials of one course, and a review mixes questions from all of them. Tap [New group] on the Library tab and pick the materials.

Material group screen

A weekly ranking
with friends

Only friends you invite see a weekly ranking by questions answered, and you can send five fixed cheers. You get a notification when a friend passes you. Your material and questions are never shown, and you can hide any material.

Weekly ranking on the Friends tab
Question formats

Seven ways to ask.

Two-choice True / false Multiple choice Pick the blank Fill the blank Type the answer Flashcards Speed O/X Match pairs

Speed O/X and Match pairs are light practice that isn't recorded.

Privacy

Your material,
for your study only.

Original files stay on your phone

Only the text is extracted and saved. Your PDFs and slides are never uploaded, and text in scans and images is read on your phone. If you turn on Pro figure reading, only the images on pages with figures are sent to AI to be read, and they are not stored.

Never used to train AI

The text sent to generate questions is used only under terms that forbid the AI provider from training on it.

Delete means deleted

Me → Settings → Delete account removes your materials, questions and history at once.

Read the full Privacy Policy →
Terms and policies

The same documents you can read inside the app.