One book at a time. Five skills per chapter: understand it, apply it, master its words, say them like a native, then teach it out loud.
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1
Load a Book or Article
Upload your own copy (PDF). It is read entirely in your browser and saved on this device only — nothing is uploaded to any server. Only the chapter you're training on is sent to the AI, each time you ask for coaching.
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Tap to choose your book (PDF, .md, or .txt), or drag it here
e.g., Atomic Habits — your purchased copy. Markdown auto-detects chapters; EPUB? convert once with Calibre.
2
Mark the Chapters
Tell me where each chapter starts and ends (page numbers of the PDF). Use your book's table of contents — or take the shortcut and split it evenly, then fix later.
Six words from this chapter worth owning — meaning, when to use them, and a model sentence. Then the real test: write your own sentence with each and I'll check it.
Eight challenging words from this chapter. 🔊 hear it in an American voice · 🎙 say it and I'll check what I heard.
Fresh practice sentences built from this chapter's vocabulary. Listen, then say each one — I'll show you every word the mic caught (and missed).
The boss level: explain this chapter out loud for 1–2 minutes, like teaching a friend. Structure it: what's the big idea, why it matters, one example.