Sunli is not ready yet. This is what we are making.
A good time to call home, a few time zones away
Is it too late to ring Mum?
It’s eleven at night where you are. You are working out what time it is at home, and whether she is still up. By the time you are sure, it feels too late to ring, and tomorrow is full.
Nobody is a bad son or daughter here. The sum is awkward and the day is short.

RuthMother
Ruth sees the eye doctor at three.
Ring her after.
What Sunli does about it
- Sunli keeps her clock. It tells you when to ring, and what she had on this week.
- She doesn’t need the app. Your mother can stay a page in your notebook and never hear of Sunli.
- Beside her clock it keeps what you tell it: the appointment on Thursday, the holidays where she lives, the hours she likes a call.
A preview of the design, captured from the prototype. The app is still being built.
This part works today
Pick two cities and see the hours when you are both awake. It runs in your browser and keeps nothing.
Or start with two cities
Everyone has an orbit.
Each day, Sunli shows you one small thing to do for someone who matters to you.
You decide what each person sees. Always.
These are the rules Sunli is being built by. They will be written into the privacy policy before anyone can sign up.
- Nothing you write is sold, and there are no adverts.
- Nobody sees anything about you unless you chose to show them. Every new person starts at “Nothing”.
- You can read everything the companion remembers, and erase it.
- What you tell it about one person is never used for anyone else.
- Nothing on your lock screen says what kind of day you are having.
What Sunli is not
- It is not a dating app. It never matches you with strangers, and it is about people you already know.
- It is not a medical app. It does not diagnose, and nothing it says is medical advice.
- It is not a tracker on anyone’s phone. Nobody is followed, and Sunli does not use your location.
Where things stand
Sunli is not ready yet. The design is finished and the first version is being built.
There is no app to download today and no list to join. When there is a way to hear from us, it will be on this page.
One part of it works already, here on the site: When can I ring?
Written on 14 November 2026.