EbookSync – Sentence-level synced ebook listener

Listen to ebooks with per-sentence control so you never lose your place

Problem

Listening to ebooks during commutes or chores is convenient, but once distracted you lose track, and returning to a specific sentence is hard. A developer already built a tool to listen to ebooks and control playback sentence by sentence, proving the need is real. Mainstream audiobook apps only support chapter-level navigation, not sentence-level precision or text highlighting while listening.

Solution

A local-first desktop or mobile reader that imports EPUB files and uses system TTS or a user's own speech API to read sentence by sentence while highlighting the current sentence. Users can click any sentence to play from there, auto-resume on pause, repeat with sentence intervals, and export timestamped notes.

Users

Learners, language learners, and commuters who want precise control while listening to ebooks.

MVP

Import EPUB and split into sentences; use local TTS to read and highlight sentence by sentence; click to jump; auto-save progress; basic playback controls (pause, previous, next).

Revenue

Free base features; premium features like custom voices, note export, and multi-device sync via subscription or one-time purchase.

Why now

Local TTS quality has improved dramatically, and more people consume long-form content during commutes. Sentence-level interaction is a gap mainstream audiobook apps ignore.