            
            Product · Interactive Books
          

Create books with living, rich content.

Write with a powerful toolkit — images, video, questions, interactive video dropped straight in — and watch it lay itself out onto real A4 or A3 pages. Readers practise right on the page, or work through it with their own AI.

Download free See live demo Use on web

Unit 3 · Present Perfect

Talking about experience

Use the present perfect when the exact time is not important, or when a past action still matters now.^[1]

CIV

Listen to each example, then repeat aloud.

Watch out — “since” marks a starting point, “for” marks a length of time.

[1] Swan, Practical English Usage, 4th ed., §54.

Interactive books

Write with rich tools. Read with an agent, note as you go.

Blocks that flow into pages — text, media, tables and Cherry Interactive Video clips repaginate as you write.

Practice and exam quizzes — readers practise right inside their own copy of the book.

Citations, highlights and notes — footnotes stay pinned to the page; readers keep their own margin notes.

Agent

Integrate your AI agent into writing work.

Open the agent panel inside the book editor and Cherry Studio hands your Claude Code or Codex CLI a Book API. Ask for a section, a summary or a quiz set — blocks appear on the page as it works, and every change is listed so you can review or undo it.

Claude Code CLI Codex CLI Your own subscription

Runs the CLI already installed on your machine. Cherry Studio never proxies or stores agent output.

                claude-code · book: English in Practice
              

> add a practice section to Unit 3 with one question
thinking · reading book structure
cherry.book.getOutline6 units
cherry.book.createBlock(h2, p)ok
cherry.book.createQuiz(single)ok
Applied 3 changes to “Unit 3”.

              
              Publishing
            

Two ways to get it to your readers

Option 01 · Free

Share the file. It plays anywhere.

Export a .civ or .cib and send it however you like — email, Drive, LMS, USB. Readers open it with the Cherry Studio app, the free public Cherry SDK, or with Cherry Playground straight in the browser.

Public SDK is a free download — no licence, no account

Or send a Playground link — readers drop the file and play, nothing uploaded

Passcode still applies — digital signature is for domain-locked exports

Open Cherry Playground Download public SDK

Start creating your content here.

Recording, editing, books and publishing — all free, on the app and on the web. Nothing to pay.

Download free

Desktop app free · web version free