An iPad notebook that reads your handwriting.
Write with Apple Pencil, maths included. Ask “is this right?” and Buddy circles the slip, writes the next step under your line, or draws it out.
- Reads your handwriting, maths included
- Writes and draws back, in its own ink
- A study browser beside your page
A chain-rule problem in your own hand. Ask “is this right?” and Buddy circles the slip, then writes the next step under your line.
Your page, and Buddy’s pen.
Handwritten notes that Buddy can read, mark and add to.
Write with Apple Pencil. Buddy writes back.
It reads your handwriting, maths included. Ask “is this right?” and it circles the slip. Ask for the next step and it writes it by hand, under your line.
Ask it to show you, and it draws.
Pointers, trees, DP tables, flowcharts and charts, drawn on your page in Buddy’s ink.
Or watch it sketch.
Write “graph: y = x² − 4” and Buddy plots it by hand, with the crossings marked.
The web, beside your notes.
Say “pull up LeetCode” and a study browser opens next to your page. Buddy follows along there too.
Mark up your PDFs.
Highlight a passage with your Pencil and Buddy offers to explain it, in a few plain sentences.
Every session becomes review cards.
Each conversation is saved into your note with a summary and review questions. Practise them later with spaced repetition, or let Buddy quiz you out loud and grade your answers.
Start free. Keep studying.
The whole notebook is free. Credits are time with Buddy: about one question each, a fraction for a quick one, more when it thinks hard.
Every month
- The full notebook: notes, maths, code and PDFs
- Pencil notes on iPad
- Review cards with spaced repetition
- 25 credits a month to try Pen Buddy
Billed monthly
- 300 credits a month
- Talk it through, out loud
- Screen tutoring on your Mac
- Handwriting, diagrams and graphs on iPad
Billed monthly
- 1,000 credits a month
- Everything in Regular
- Studying most days, long sessions
- Deep problem briefs, so help is instant
Billed monthly
- 2,500 credits a month
- Everything in Heavy
- Long papers and proofs
- Room for deep thinking, every day
Need more in a busy week? Top up any time: 100 credits for $4.99, 300 for $12.99 or 1,000 for $34.99. Top-ups last 12 months.
Questions, answered.
Yes. Pen Buddy is a study notebook for iPad with handwritten Pencil notes, typed notes, maths, code and PDFs in one place, and a tutor, Buddy, built in. You talk to Buddy out loud, and it reads and writes on the page you’re on.
Yes. Write with Apple Pencil and ask “is this right?”. Buddy reads your handwriting, equations included, and circles the line with the slip. Ask for the next step and it writes it by hand, under your line.
For handwritten notes, yes. Typed notes, PDFs, the study browser and talking to Buddy all work without one.
Yes. Ask it to show you and it draws two pointers, trees, DP tables, timelines, flowcharts and charts in its own ink. Write “graph: y = x² − 4” and it plots the curve by hand, with the crossings marked.
Yes. Highlight a passage with your Pencil and Buddy offers to explain it in a few plain sentences. Your PDFs stay on your iPad.
Yes. Import Notes brings in GoodNotes (a PDF export or a .goodnotes file), Notability .note files, PDFs, images, Markdown and HTML, with a step-by-step export guide for each app. You can also share a PDF to Pen Buddy from Files, Mail or Safari.
Yes. Say “pull up LeetCode”, or any site, and a study browser opens beside your page. Buddy follows along there too.
iPads with iPadOS 18 or later. Pen Buddy for iPad is coming to the App Store.
Pen Buddy
Everything you need to study, and someone to study with.