Every feature exists because of something we know about how memory works.
The Learn page explains the science behind each one.
Echo is in open development toward 1.0. Anything marked
🚧 Coming in 1.0 is being built right now;
🔭 Roadmap means planned after 1.0.
Everything else ships in the current beta.
01
Smart Rewind
Hit play and Echo has already rewound — a little after a short pause, more after hours. Interruptions stop costing you context. The longer you're gone, the further it rewinds.
02
Chapter Looping
Repeat one chapter until you own it — the feature Echo was born for. Loop the playlist, the chapter, or the exact passage between two bookmarks.
03
Photo Bookmarks
Attach a photo of where you are; Echo switches the player art to your photo as you pass that moment again. Your brain encodes place alongside ideas — Echo turns that into a retrieval tool.
04
Voice Memo Bookmarks
Hold a button, speak your thought, keep driving. Your memos play back inline when the narration reaches them — past-you briefing present-you.
05
Built-in Spaced Repetition
An Anki-style flashcard system with audio on the cards, SM-2 scheduling, daily review, and hands-free review on Apple Watch. Never heard of Anki? We explain from zero.
06
Mark Now, Card Later 🚧 Coming in 1.0
One tap (phone or watch) marks a passage without stopping the narration. Later, your Card Inbox turns marks into flashcards — when you have the bandwidth, not mid-sentence.
07
Decks, Tags & Anki Import 🚧 Coming in 1.0
Organize cards into decks, edit any card, review per deck — and import real .apkg Anki decks, scheduling history included.
08
Brain Dump 🚧 Coming in 1.0
A thought hits mid-chapter? Park it — text or voice, even dictated from the watch — without pausing the book. Promote keepers to bookmarks or flashcards later. Your working memory, outsourced.
09
Context Memory 🚧 Coming in 1.0
Opt-in and Echo quietly notes where you were — on bookmarks, sessions, and chapter starts. "Chapter 3? You started it on Oak Street." Approximate, on-device, deletable.
10
Insights That Are Real 🚧 Coming in 1.0
Listening time, streaks, chapter coverage ("Ch 7 — 86%, heard 3×"), retention curves, review forecasts, your best focus hours. Honest numbers from your actual listening — never from a server.
11
Synced EPUB Reader
The text scrolls with the narration, diagrams appear when they're mentioned, and tapping a paragraph jumps the audio there. Search the whole book and leap to the spoken moment.
12
On-Device Auto-Alignment
Echo's speech recognition aligns text to audio in tiers — chapter snap, drift detection, word-level repair — entirely on your device. No cloud. Ever.
13
PDF Companions
Slides, scans, sheet music: align PDF pages to the audio with a precision scrubber joystick, and bookmark pages with exact zoom and position restore.
14
A Watch Remote You Design
Up to 25 buttons across 5 pages, arranged your way from the phone. Digital Crown scrubbing or volume. Big targets you can hit in the rain without looking. Plus a Pomodoro timer on your wrist.
15
Pristine Speed Control
Pitch-corrected speed from 0.5× up — narrators sound human at 1.25×. Every book remembers its own speed, and displayed times adjust to match.
16
Second-Brain Export 🚧 Coming in 1.0
One tap exports a book's bookmarks, notes, voice memos, photos, and flashcards as a clean Markdown bundle — drop it straight into Obsidian, Notion, Logseq, or a plain folder. No account, no lock-in.
17
Study Sync via iCloud 🚧 Coming in 1.0
Flashcards, decks, bookmarks, and playback position follow you between iPhone, Mac, and Watch through your personal iCloud — Echo runs no servers of its own.
18
Dyslexia-Friendly by Design
Lexend and OpenDyslexic fonts built in (this site is set in OpenDyslexic), Dynamic Type support, VoiceOver labels, and reduced-motion respect throughout.
19
Chapter Study Mode 🔭 Roadmap
Treat chapters like flashcards: listen, grade yourself, and Echo schedules each chapter's return. Your due chapters become today's listening queue.
