Echo: Audiobook Study Player

June 5, 2026

Echo: Audiobook Study Player

Echo turns audiobooks into a serious study medium. Search across spoken content, jump to any passage, create flashcards from what you hear, and review with spaced repetition — all without leaving the audio.

Echo bridges the gap between reading and listening: a synced EPUB sits alongside your audiobook so you can follow the text while you hear it, jump between the two, and never lose your place.

Features:

• Intermittent Attention Support: Smart rewind ensures you never lose context when you hit play after a pause.
• Chapter Looping & Voice Memos: Loop chapters until absorbed, and leave voice memos on bookmarks.
• Spaced Repetition (SRS): Built-in flashcard system using the SM-2 algorithm.
• True ePub Alignment: On-device auto-alignment maps every paragraph to the narration.
• Apple Watch Remote: Complete control from your wrist.

Available on iOS, macOS, and watchOS.