First, do the arithmetic

Most couples in this situation have never counted. They have a feeling — “we never see each other” — and feelings are bad at distinguishing four hours a week from zero.

Count one ordinary week. Not a good one, not a disaster: the hours you were both awake, at home, and not working. Write the number down.

The number matters because the two situations need different answers:

Six or more hours a week, badly distributed. This is a scheduling problem. It’s fixable, and most of this post is about it.
Under two hours a week, consistently. This is a structural problem — the jobs, the commute, the shifts. No app fixes it. It needs a decision about the structure, and pretending otherwise wastes years.

Most people who feel like the second are in the first. Some genuinely aren’t, and they deserve to know it rather than keep optimising around it.

Stop looking for evenings

The default picture of time together is a weekday evening, and for mismatched schedules that’s often the one slot that will never work. Couples keep hunting for it anyway and conclude they have nothing.

Places people find time they’d written off:

Mornings. Deeply unfashionable and frequently the only reliable overlap. Breakfast together beats a dinner that never happens.

The seam. One of you gets home as the other leaves. Forty minutes, every day, currently spent on handover logistics. It can be the thing instead of the gap between things.

Weekday daytime. If one of you works nights, Tuesday at 11:00 is real time, and it has a rare advantage: everywhere is empty.

The commute. Not romantic, but a call on a predictable walk is time you’re not otherwise using.

Protect the overlap you do have

When time is scarce, the mistake is spending it on logistics. The hours you share get eaten by admin — the bills, the parcel, the thing that needs booking — because those are the only moments you’re both available to discuss them.

Two rules that help:

Admin gets its own slot. Fifteen minutes, named, ideally not inside your shared time. Then the shared time isn’t the only place it can happen.

Protect the first hour. If you have three hours a week together, the first hour of it is not for errands. Decide this once, out loud, so neither of you has to defend it each time.

Make the overlap visible rather than remembered

When two schedules are complicated, holding both in your head is genuinely hard — and the person who tries usually gets it wrong, proposes a time that doesn’t work, and feels rebuffed.

Painting the hours you each have takes about ninety seconds a week and removes the guessing entirely. With scarce overlap this matters more, not less: when there are two good windows in a week, missing one because nobody noticed is half your time gone.

Hours for Two also handles the thing that trips up shift work — recurring windows. If you’re always free Tuesday mornings, say it once, and it fills itself in every week.

Different time zones count as mismatched too

The arithmetic is the same, with one addition: do it in real instants, not clock times. “I’m free at 20:00” means nothing across a five-hour gap, and mental conversion is where plans get lost.

Anything you use for this should compute the overlap on real time rather than showing you two clocks to reconcile. (Hours for Two does; each of you sees your own zone.)

The honest part

Scarce time together is not automatically a crisis. Plenty of couples run on six good hours a week for years and are fine, because the hours are actually good.

What corrodes is not the amount. It’s the accumulation of near-misses — the week where you both had Wednesday free and neither knew. That’s the part worth fixing, and it’s the only part a calendar can fix.

TL;DR

Count a real week first: a scheduling problem and a structural one look identical from inside
Stop hunting for weekday evenings; mornings, the seam and weekday daytime are where the hours are
Give admin its own slot so it stops eating the shared one
Make the overlap visible rather than remembered — with scarce time, one missed window is half your week
Across time zones, compute on real instants, never on clock times