If your phone went quiet for two days, who would know?
If your phone sat untouched from Friday evening to Sunday evening, who would notice? Lampsill is a quiet safety net for people who live alone: nothing to wear, nothing to press, and your people see only whether your light is on.
Subhankar Denria
CTO & product engineer
If you live on your own and your phone sat untouched on the kitchen table from Friday evening to Sunday evening, who would notice?
A friend might think you're busy. Work might not miss you until Monday. Most of the time, it really would be a quiet weekend. But "most of the time" is the part that sits at the back of your mind, and the minds of the people who love you.
Lampsill is a small app that answers that question for you.
The whole app, at a glance
Every light is on.
Each person is a window. A lit window means their phone is being used as normal. That’s all anyone sees, and usually all anyone needs.
The real app, recorded on a phone.
Watch a quiet weekend
Drag through it, or press play. This is everything Lampsill does.
A quiet weekend
Drag through it, or press play
Mum’s phone, on her kitchen table
Fri 6:00 pm
Last picked up just now.
Ade’s phone, two hours away
Mum · On
Nothing to do. Ade can’t see when her phone was last used, only that her light is on.
Nobody is watched, nothing is worn, and the first person Lampsill asks is you.
Living alone is everywhere
Living alone, worldwide
One of the most common ways to live
China
1 in 4 homes · 2020 census
0m
one-person households
European Union
The most common household · 2025
0m+
single-adult homes
United States
US Census Bureau
0m+
one-person households
Japan
38% of homes · 2020 census
0m
one-person households
United Kingdom
Half are under 65 · 2025
0.0m
people living alone
Across just these five places
0m+ homes
It isn't only about getting older. In the UK, half of the people who live alone are under 65: students, night-shift nurses, people new to a city, people who simply like their own space. Most are doing perfectly well. What they share is one small gap.
The real gap
How long before anyone knew
Of every 100:
29 were not found for over a week
9 of those, not for over a month
Lampsill can’t change why someone goes quiet. It’s built to shorten how long nobody knows.
Nothing to wear. Nothing to press.
What it asks of you
Nothing new. That’s the idea.
A pendant
- Wear it
- Charge it
- Press it
A daily check-in
- Remember it
- Every morning
- Even on holiday
Lampsill
- Use your phone
- As you already do
- That’s all
Why something new
The help that exists mostly goes unused
9%
of Americans over 65 use any medical alert device
18%
of those who own one wear it all the time
up to 80%
of wearers who fell, in one study, did not press it
Lampsill is for the very large number of people who have nothing at all, and it starts with the phone they already carry.
Lampsill is not a medical alarm and doesn't replace one. It doesn't detect falls and knows nothing about anyone's health. It notices one honest thing: a phone that has gone untouched for longer than usual.
See the real app
The real app
Six screens, start to finish
For you, or for someone you love
Who it’s for
Set up in a few taps
1
Start it on your phone
2
Send them a code
3
They type it in and agree, in two taps
4
Their window appears on your home screen
So you don’t have to keep calling.
A whole family can look out for the same person, and one person can look out for several. Each appears as a window:
At a glance
Each person is a window
On
All normal. Nothing to do.
Care without watching
Care without watching
Your people see your light. Nothing else.
Is the light on?
The one thing they see
They never see
- Where you are
- What you do on your phone
- Your messages and calls
- Your steps
- Any camera
- Any microphone
Kept safe
What we hold is little, and locked
Encrypted on the way
Everything between your phone and Lampsill.
Passwords never kept
Only a scrambled form nobody can read back.
Numbers encrypted
Backups delete themselves after 30 days.
Notifications say nothing
Names never pass through Apple or Google.
Yours to delete
No ads, no analytics, never sold. All gone in one tap.
Caring about someone shouldn't mean watching them. That was the line we refused to cross. The full privacy notice is at lampsill.com/privacy/app.
Free during early access
What it costs
Free during early access
Everything, free, while it’s in early access
- Lampsill for yourself
- Looking out for the people you love
- Being looked out for
- Reminders, notes and steps
One thing that won’t change
The person you look out for never pays.
Prices aren’t set yet. Early testers will hear first, well before anything changes.
Get early access
Lampsill is in beta on iPhone and in testing on Android, and the early access programme is open to anyone, anywhere. It takes about five minutes to set up, once.
Leave a light on for someone
Early access is open, and free: beta on iPhone, testing on Android. About five minutes to set up, once.
Get early accesslampsill.com · Not an emergency service
Lampsill is not an emergency service and doesn't contact one. If someone needs help right now, call your local emergency number.
Read next: the small things that make it work in real life, and the decisions behind Lampsill.
Sources. China: National Bureau of Statistics, 2020 census, via UNSW. EU: Eurostat, Household composition statistics (2025 data). US: US Census Bureau. Japan households: 2020 census, via nippon.com. UK: ONS, Families and households in the UK (2025). Japan, deaths at home: nippon.com, 2025 figures. Medical alert use: The Senior List, 2026 report. Wearers who did not press the button: PMC, PERS use in older adults at risk of falls.
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