DATUM Expected live · early 2027

The plans are in one chat. The calendar is in another.

Datum puts both in the same place, and keeps every conversation attached to the thing it was about.

Join the waitlist · iOS first

Not out yet. iOS first. We'll tell you when, and nothing else.

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Inside the app

Five parts, built around the next time you see each other.

  1. 01

    The countdown

    Days until you next see each other, first thing every time you open the app.

  2. 02

    Things to do

    Curated events and date spots for when you're there, picked by hand for each city.

  3. 03

    The shared calendar

    Both your plans in one calendar, in both your timezones.

  4. 04

    Two cities, one moment

    A photo prompt for you both at the same time, wherever you are, kept side by side.

  5. 05

    For you

    Your tracking page: flights taken, hours spent together and kilometres travelled.

We read the reviews of every couples app in this category, in five languages, before we designed anything. No prompts. No quizzes. No daily questions. Just a well-made app for long-distance couples who don't want five tabs open, with every question and its answer in the same place:

  • When do we next see each other.
  • What's on our calendar.
  • What are we doing when we get there.
  • What's it costing us.

A countdown, a shared calendar, chats that stay on their topic, an itinerary with curated events and date spots, and albums that belong to the two of you. We write the city guides by hand — with more coming every week. The plan itself works for any two cities on earth, in any two timezones, from the first screen.

Ralph from Datum

Pricing
To startFreefor both of you
Then€4.99a month each
Or€44.99a year

The free tier works for both of you before either one pays, then €4.99 a month each, or €44.99 a year.

01 · Home, once set up
Datumsynced 14:02
Next visit · ParisVY8012
14days
14 Sep → 17 Sep · 3 nights · Ralph travels · Booked
Nothing after 7 Oct
Longest gap ahead 17d · Sep → Oct
Plan
The year · 3 aheadExpand →
SeptemberOctober →
MTWTFSS
123456 78910111213 14151617181920 21222324252627 282930 Paris
Booked Planned Idea
Home
02 · Things to do
Datumsynced 14:02
Quimet & Quimet

Standing-room bodega in Poble Sec, same family since 1914. No seats, no bookings.

BCNMathieu
Canal Saint-Martin, Sunday
planned

Bread from Du Pain et des Idées, then nothing else planned.

PARRalph
Rijksmuseum, early

Doors at nine. The Night Watch room is empty for twenty minutes.

AMSMathieu
Add an idea
Things to do