Book App Pro vs Theodore AI

Always wanted to quickly publish your own book? Wanted to have readers comment and share emoticons? Now you can. BookApp allows you to publish your own books and connect the chapters in any order you want. Try it, we look forward to your feedback.

Theodore writes your novel and narrates it as an audiobook — all in one app. Type one sentence about a story you've always wanted to write. Theodore proposes characters, plot beats, and the first chapter. By the time you're done, you have a finished book and an audiobook narration ready for your ears (or for Audible). The tool that replaces ChatGPT, ProWritingAid, and ElevenLabs in one streamlined workflow. WHAT YOU CAN DO • Start with a sentence — Theodore proposes characters, plot beats, and the first chapter • Write or co-write each chapter with AI that remembers what came before, so characters and tone stay consistent across the whole book • Generate audiobook narration with a clean studio voice or AI character voices • Listen as you write, with chapter-by-chapter audio playback and a reading mode designed for long sessions • Upload your own cover image from your photo library, or generate one in any of seven artistic styles • Bring your characters to life with Active Character mode — voice their dialogue, the AI handles the rest WHO IT'S FOR • Indie authors who want to publish on Audible without a five-tool stack • Writers who lose steam at chapter 2 because every other AI tool runs out of memory by chapter 2 • Readers with story ideas who want to bring them to life without learning Scrivener FREE TO START 1,000 credits every month, free forever. Generate chapters and audio without paying. Upgrade only when you want more. Built by an indie author for indie authors. Fast, focused, no clutter.