For couples
The same argument, in different clothes.
Most couples are not fighting about dishes, schedules or money. They are having one or two underlying conversations over and over, wearing a different outfit each time.
What tends to help
Thinking before speaking, somewhere private
Most of the damage happens in the first ninety seconds, said badly. Somewhere to work out what you actually mean — before you say the version you will regret — changes the conversation you end up having.
A record neither of you has to remember
"You always" and "I never" are usually both wrong, and neither of you can prove it. Check-ins build a picture that does not depend on who is better at arguing.
Somewhere to put what you cannot say yet
Not everything is ready to be said. Writing it down privately is not dishonesty — it is what stops it coming out sideways at eleven at night.
Structure when neither of you can supply it
A shared session takes one issue at a time, summarises each position until you both agree it is right, and does not let either of you win.
What it will not do
These are limits by design, not features that have not been built yet.
That is not a decision software should be involved in.
There is no verdict, no score, and no winner. A tool that declared one would become another thing to argue about.
It cannot supply willingness that is not there.
Where signs of coercion or abuse appear, joint guidance stops entirely. Mediation assumes two people negotiating in good faith, and applying it otherwise helps the wrong person.
You do not both have to be keen
One of you can start alone. The private half is fully useful with one person in it, and nothing here notifies or nudges the other into joining.
Plenty of people use only their own side. And a space is not couples-only — the same thing works for a sibling, a co-parent, a friend, a roommate or a business partner.