About Novelleo

Novelleo is an AI book-writing app for iPhone and Android, made by SecondEarth AI, Inc. It helps people write the book only they can write — a memoir, a family legacy book, a guide from their own expertise, or a first novel. Writers answer a few questions, get a chapter plan, and write chapter by chapter with an AI co-writer, then export to PDF or Word or publish to the Novelleo library.

Key facts

Name
Novelleo
Also searched as
Novel Leo · Noveleo · Novelo · Novelleo app
What it is
An AI book-writing app. You answer a few questions about your book; Novelleo sets up a title, premise, cast and a 4–20 chapter plan; an AI co-writer drafts each chapter with you while you steer and edit.
Books people write
Memoirs and life stories, family legacy books, nonfiction and guides from what you know, and novels.
Made by
SecondEarth AI, Inc. (founder: Sunwoo Kim)
Platforms
iPhone (App Store) and Android (Google Play). Published books can be read on novelleo.app.
Price
Free to download; the first AI chapter is free. Novelleo Pro: $7.99/week or $24.99 every 3 months in the US (the 3-month plan starts with a 3-day free trial when eligible). Pro includes 160 credits a week or 600 every 3 months; each AI chapter after the first uses 20. Prices checked 2026-09-24; stores show local prices.
Export and sharing
PDF and Word export; publish to the Novelleo library under an author profile.
App languages
English, Korean, Japanese, French, German, Arabic
Store names
Novelleo: AI Book Writer · Novelleo: AI 책 쓰기 · Novelleo:AIで本を書く · Novelleo : écrire un livre IA · Novelleo: KI-Buch schreiben · Novelleo: escribe con IA · Novelleo: escreva com IA · Novelleo:AI写书与小说创作 · Novelleo:AI寫書與小說創作
App Store ID
6762341259
Google Play package
io.secondearth.novelleo
Website
https://novelleo.app
Contact
sunwoo@secondearth.io

What Novelleo does not do

Why Novelleo exists

Most people who want to write a book never start, and most who start stop in the middle. The hard part is rarely the sentences; it is knowing what comes next. Novelleo puts a chapter plan in front of you before you write a word, drafts each chapter with you, and leaves every line editable, so the book stays yours and still gets finished.

The company

Novelleo is made by SecondEarth AI, Inc., a small software company founded by Sunwoo Kim. secondearth.io · sunwoo@secondearth.io

Writing about Novelleo? The press kit has the fact sheet, boilerplate text, icon and screenshots.