If you study on a Mac, you probably have a browser full of half-watched lecture recordings, a handful of YouTube tutorials you meant to finish, and the nagging sense that an important concept was explained somewhere in the middle of a video you can never quite locate again. Echo fixes that at the system level, without logins, cloud accounts, or anything that leaves your Mac.
How does Echo remember where you left off?
Echo runs quietly in your menu bar and watches what your Mac is playing across every source it supports: YouTube, web video players (including recorded lectures served through any browser), Spotify, Apple Music, Apple Podcasts, and SoundCloud. Every time you play something, Echo logs it with a timestamp to an on-device timeline. Nothing is uploaded anywhere.
When you want to go back, press ⌘⇧E to open Echo, find the lecture in your history, and click to resume at the exact spot you left off. There is no scrubbing, no guessing, no replaying the first twenty minutes to find your place.
You can open Echo from any app, any space, any full-screen window. You do not need to switch back to your browser first.
What about lectures hosted on your university's web player?
Many universities host recordings in web-based video players, often embedded in a course portal or learning management system. Because Echo captures web audio and video generically in your browser, it works with these players the same way it works with YouTube. It does not need a special integration with your institution's platform; if the video plays in your browser, Echo sees it.
It is worth noting that YouTube Watch History only resumes playback if you are signed in and watching on YouTube's own site. If your lecturer links to an unlisted video, or if you watch in a different browser profile, YouTube often loses your position. Echo tracks position regardless of your sign-in state.
Can I bookmark the exact moment a concept is explained?
Yes. Echo's Moments feature lets you save the precise timestamp of anything playing. When a lecturer explains a concept you want to return to for revision, press ⌘⇧E, find the current item, and create a Moment. That timestamp is saved and searchable in your history.
In practice this is much faster than pausing to write down a time code in your notes, and much more reliable than trying to remember "it was about halfway through the second video." Your Moments live alongside your history, all on-device.
What happens to lectures I never finished?
Half-finished videos go onto your Shelf, Echo's holding area for things you started but did not complete. Your Shelf collects them automatically so they are easy to find later, separate from your full history. If you start a 90-minute recorded seminar on a Tuesday, stop after 40 minutes, and come back on Thursday, it will be waiting on your Shelf at the 40-minute mark.
This is especially useful at the end of a semester when you have accumulated a backlog of recordings you intended to revisit. Rather than hunting through your browser history tab by tab, your Shelf shows everything that needs finishing in one place.
Is my viewing history private?
Completely. Echo stores everything on your Mac only. No account is required, nothing is synced to a cloud server, and nothing is shared. Your lecture history, your Moments, and your Shelf are yours alone. For students who are cautious about study data or who use shared university networks, that matters.
There is a related post on exactly this if you want the full breakdown: Is Echo private?
Does Echo work across my whole Mac, not just the browser?
Yes. If you also listen to recorded lectures or academic talks via podcast apps, or follow along with tutorial content on Spotify, Echo captures those too. Your timeline is one unified history across native apps and the browser. You do not manage separate histories per app.
For a broader look at what that feels like day to day, the post on continuing what you were watching across your whole Mac covers the pattern well.
Echo is a one-time purchase of $9.99 and works on up to three Macs, so your home desktop and your laptop are both covered under the same payment.
Frequently asked
Does Echo work with lecture videos hosted on a university portal?
How do I get back to a lecture at the exact second I stopped?
What is the Shelf in Echo?
Is a subscription required for Echo?
Remember Every Lecture, Effortlessly
Echo costs $9.99 once, works on three Macs, and keeps your entire viewing history private and on-device.
One-time purchase, yours forever.