If you've ever surfaced from deep focus to find your meeting started ten minutes ago — not because you didn't care, but because time slipped — Heads Up is built for exactly that.
Time blindness is difficulty sensing time passing — how much has gone by, how much is left. It's common with ADHD, and it doesn't respond to being told to "just pay attention." When you're absorbed in something, a calendar notification slides in and slides away, and the part of your brain that would've acted on it never got the message.
The usual advice — more alarms, more sticky notes, more calendars — piles on more things that are just as easy to tune out. The problem was never that you needed another gentle nudge.
Heads Up does two things that matter when time doesn't register on its own:
It finds the Zoom, Meet, Teams, or Webex link in the invite, so joining is one click — no scrambling through the calendar while you're already late and flustered. And you choose how much warning you get: fifteen minutes out, or two, or right at the start.
There's no system to maintain — the thing that quietly kills most reminder setups. You grant calendar access once, and it watches every calendar you already use (iCloud, Google, Outlook, Exchange). It filters out all-day events, declined invites, and "free" blocks on its own, so it only speaks up for meetings that actually matter.
Heads Up reads your calendar entirely on your Mac — no account, no sign-in, no tracking, and nothing leaves your device. And it's a one-time $19.99 purchase, not a subscription: something you're relying on to show up shouldn't add one more monthly bill to keep track of.
$19.99 once · macOS 13 or later · no account, no tracking
Heads Up is a productivity tool, not a medical device or treatment. It won't fix time blindness — nothing does — but it can take one thing that's genuinely hard and make it a lot less so.