Every book you finish
makes Pip grow.

Chapterpillar is a cozy reading tracker for kids and families. Log a finished book, and your caterpillar gains a segment. The more you read, the longer Pip gets.

Start reading โœฆ Feed Pip a book ๐Ÿ›
How it works

Three tiny steps to a very long worm

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1

Read a book

Any book counts: picture books, chapter books, bedtime stories read together.

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2

Log it in seconds

Scan the barcode or type the title, give it stars, tell Pip how it went.

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3

Watch Pip grow

Every book adds a segment. Hit milestones and Pip somersaults, sprouts wings, and earns a crown.

Features

Made for little bookworms (and their grown-ups)

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A worm of your own

Each reader grows their own Chapterpillar. Segments are color-coded to the books they came from.

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Milestones & badges

Somersaults at 5 books, butterfly wings at 10, Library Monarch at 20. Always a next adventure.

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Family reading

Profiles for every kid. No emails, no passwords, just a name and an avatar.

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A bookshelf that remembers

Every logged book lives on a cozy shelf, ratings, reading journeys and all, to look back on for years.

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Scan & go

Point the camera at the barcode and Pip fills in the title, author, pages, and cover.

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Grown-ups in control

Editing, settings, and the book shop live behind a family PIN. Kids just read and grow.

Go on, feed Pip a book ๐Ÿ›

This is what finishing a book feels like in Chapterpillar.

Questions

Grown-ups usually askโ€ฆ

Is it free?

Yes. Chapterpillar is free for families. If a grown-up buys a book through our recommendation links, Amazon pays us a small commission. That's the whole business model.

What ages is it for?

Anyone who reads or is read to, from picture-book listeners to chapter-book devourers. The worm doesn't care how long the books are.

Can I add all my kids?

Yes! One grown-up account, a profile for every reader (grown-ups can have worms too). Kids never need emails or passwords.

Is my family's data safe?

No ads, no trackers, no selling data, no kid accounts, and real export & delete buttons. The details are in how we keep Pip's secrets.

Ready to grow a worm? ๐Ÿ›

Free for families. Set up in two minutes, and the first book is the best one.