An AI mistake notebook for retrying what you miss, with worked solutions

Upload photos or a PDF of the problems you worked on paper, and AI separates each question from its answer and organizes them for you. Upload the answer key after the questions, and it matches each answer to the right question.

No installDesktop & mobileAI extraction & solutionsDaily study planPDF & print

Got a join code from your teacher? Join your class

How it works

From worksheet to review set

Upload your material and AI organizes it. After you solve it, you can collect just the ones you missed and try them again.

01.

Import problems

Workbooks and past papers as photos or PDFs

02.

Clean with AI

Separate questions and answers, worked solutions, tags

03.

Build sets

Pick by mistakes, tags, or difficulty

04.

Review again

Redo only mistakes and weak spots

Your own solution tutor

Get unstuck and keep going—even when you study alone

Everything a tutor beside you would do is built in: solve it for you, explain it again, and step back to the concept.

Register, and solutions come with it

Upload a workbook and get a step-by-step solution for every problem, leading to the answer in the answer key.

Still lost? Ask for a deeper walkthrough

Ask again. Add what confuses you, and the explanation is rewritten at your level.

Still stuck? Back to the concept

It explains the concept you need to solve this problem. Create it once, and it opens instantly on any other problem that uses the same concept.

Sample notebooks

Start from a ready-made notebook

Copy problems, worked solutions, and difficulty sets in one click. Missed problems can become your next review set.

These problems are generated automatically. The answers are derived as each problem is built and are checked by tests, but mistakes are still possible — please tell us if you find one.

Schedule

Open the app and today's work is already decided

Spread your problem sets across a calendar. Choose how much to do each day, and the Study Room brings up today's portion for you.

Set your own daily amount

Set it by number of questions or by minutes. You can also choose how much review and new material to do.

Coverage, accuracy, finish date

See at a glance how much of the plan you've completed, your accuracy, and when you'll finish at your current pace.

Voice flashcards

ReviewNotes for practicing problems. VoiceCards when you need to memorize.

Drill problems here, drill words and facts out loud in VoiceCards.

Try VoiceCards
Writing practice

Review problems here. Master model writing in Scripta.

Solve missed problems again, then practice important writing from its structure down to each sentence.

Try Scripta

FAQ

Questions, answered

A short guide to ReviewNotes.

You can add photos, PDFs, text, spreadsheet rows, and Google Sheets. AI can extract questions and answers from PDFs or images.

Build your AI mistake notebook

No copying questions out by hand. Upload them once and keep trying until you get them right.

Free to start · No credit card required