Echo
For Every Mind — turn listening into learning.
The audiobook player that helps you remember what you heard — word-perfect read-along, one-tap flashcards, and a study system built on the real science of memory.
Built on a mail route
I deliver mail — in and out of the car thirty times a shift, an aux cable, an Apple Watch, and an AuDHD brain that learns from non-fiction audiobooks in stolen, interrupted minutes. No app would loop a single chapter until it stuck, stay ready on a watch after a long pause, or remember why a bookmark was made three driveways ago.
So I built it: 956 commits in nine weeks, nights and weekends around a full delivery route — an app that treats audiobooks the way students treat textbooks. And if you're just here to listen? You never have to make a single flashcard.
Read-along is where most apps stop
Sync gets you to the page. Echo gets it into your head.
Chapter sync — table stakes. Match your audiobook to your ebook chapter by chapter. A growing crowd of apps does this; Echo does too.
Word-perfect read-along. Echo follows the narrator word by word — true karaoke, aligned on-device to the real audio (WhisperKit + CoreML), not snapped to the nearest chapter.
Turn it into memory. One tap makes any passage a spaced-repetition flashcard with its audio snippet attached — reviewed on iPhone, Watch, and Mac until you own it.
What Echo does
A serious study system, out of the way until you want it.
Everything below is in the current TestFlight beta unless marked — Echo is in open development toward 1.0.
Smart Rewind
Hit play and Echo has already rewound — a little after a short pause, more after hours. Interruptions stop costing you context.
Chapter Looping
Repeat one chapter until you own it — the feature Echo was born for. Or loop the exact passage between two bookmarks.
Built-in Spaced Repetition
An Anki-style flashcard system (SM-2) with the narrator's audio on the cards — daily review, hands-free on Apple Watch.
Synced EPUB Reader
Text scrolls with the narration. Tap a paragraph to jump the audio; search the book and leap to the spoken moment.
Voice & Photo Bookmarks
Hold a button and speak your thought, or attach a photo of where you are — memos play back inline when the narration returns there.
A Watch Remote You Design
Up to 25 buttons across 5 pages, Digital Crown scrubbing, plus a Pomodoro focus timer on your wrist.
Built for CarPlay
Full Now Playing plus a browseable library — with in-dash buttons to bookmark, record a memo, or mark a passage on the road.
Pitch-Corrected Speed
Narrators sound human at 1.25× — zero pitch distortion, and every book remembers its own speed.
Dyslexia-Friendly by Design
Lexend and OpenDyslexic built in, Dynamic Type, VoiceOver labels. Designed for interrupted, neurodivergent attention first.
Mark Now, Card Later Coming in 1.0
One tap marks a passage without stopping the narration; the Card Inbox turns marks into flashcards when you have the bandwidth.
Second-Brain Export Coming in 1.0
One tap exports a book's bookmarks, notes, memos, photos, and flashcards as clean Markdown — straight into Obsidian, Logseq, or Notion.
On-Device AI Narration Coming in 1.0
Natural narration for text-only EPUBs, generated entirely on your device — no cloud, no API calls. Books never recorded can still be heard.
Radically private
No accounts, no analytics, no tracking, no servers.
Open source
GPL-3.0, public on GitHub — the whole app.
No locked files
Built around DRM-free files you own and can see.
For Every Mind
Designed for interrupted, neurodivergent attention first.
Echo is in open beta right now.
TestFlight builds for iPhone, Apple Watch, Mac, and CarPlay — guides, test plans, and a devlog included.
Join the TestFlight beta