Features

Built around the time
between things

Most tools manage your tasks or your calendar. GapRail manages the space where they meet — and that space is where your day is won or lost.

The gap rail

Every calendar, one rail, measured to the minute

Your day rendered as one horizontal rail: meetings as blocks, free time in gold. GapRail merges every calendar you connect, so a slot only shows as free when it's open on all of them — the openings you see are openings you can actually use. Zoom out and a month-ahead strip shows the free total for every day, so you know which days can absorb more before you commit to anything.

The gap rail in GapRail's Today view, with meetings, measured gaps, and per-day free totals

Gold is time no meeting has claimed — on any calendar. (demo data)

GapRail's List view: tasks grouped by Overdue, Today, and Next Week with statuses and time estimates

Overdue first, today next — with a status and an estimate on every row. (demo data)

Fits this gap

The right task, chosen for you

The hard part of a short gap isn't the work — it's the deciding. GapRail does the deciding: for each opening, it recommends the task that actually fits, with the reasoning visible so you can trust it or override it.

AI duration estimates

Every task gets a length — even when you have no idea

Gap-fitting only works if tasks have durations, and nobody knows how long their tasks take. So GapRail estimates every task automatically the moment it's added. Override any estimate in a click — and here's the compounding part: GapRail learns from how long things actually took, so its estimates for you get sharper every week you use it.

Auto-estimated“Draft the proposal intro” · est. 35 min
You overrode it“Expense report” · 20 min → you said 45
Learned from history“Weekly metrics” · usually takes you 25 min
Deadline warning“Keep working like this and you'll miss Friday.”
Overload detected“Tuesday is overloaded by 2.5 hours.”
Meeting impact“Accepting this meeting likely costs your top project its finish date.”
Opportunity Forecast

Tomorrow's problems, visible today

GapRail projects your task list across your real future gaps and tells you what's coming: deadlines that won't survive your current pace, days that are quietly overloaded, reorderings that finish work earlier. You stop discovering problems on the day they're due.

And the rest of the toolkit

Conflict flags

When two calendars collide, GapRail flags it the moment it happens so you resolve it on your terms — before it costs you an apology.

Calendar write-back Opt-in

Want scheduled tasks to appear on your calendar so colleagues see the time as held? Turn on write access. Read-only stays the default — your calendar, your rules.

Hide the noise

Hide a meeting from your rail without touching the real event — the time still counts as busy, your view just gets quieter.

Your calendars More coming

Google Calendar is supported today. Microsoft Outlook, Microsoft 365, and Apple Calendar are on the roadmap.

See it on your own calendar

Every day has more room in it than it looks. GapRail shows you where — in the first five minutes.

See your gaps