Lumi · ships February 2027
Put the phone down. Keep it down.
A pocket-sized companion that locks the apps you choose and keeps you company until the session is done.
£69. Your £10 is refundable until it ships.
A 25-minute session, played in ten seconds.
The film
Say hi to Lumi.
Half a minute of Lumi in action. Sound on if you can.
How it works
One tap. That's the whole ritual.
Step 1. Pick a focus.
Choose how long, from 15 to 90 minutes, and which apps Lumi holds. Flexible lets you stop any time. Commitment keeps them shut until the end, with an emergency exit if you really need it.
Step 2. Tap your phone on Lumi.
Hold your phone near Lumi. The ring lights up, the apps you picked lock, and the session starts. That one tap is the whole ritual.
Step 3. Phone down. Lumi keeps time.
The countdown runs on Lumi's screen, not in your hand. Reach for a locked app and Lumi notices. No alarm, no lecture.
Step 4. Kept.
Finish and Lumi's glad. Your minutes, streak and XP land in the app afterwards, never during.
Design
Small enough to take everywhere.
Half a phone tall.
75 × 65 × 40 mm, with a loop on top for your keys or your bag.
A phone, face down. About 147 mm. Lumi is 75.
Goes where you go.
Library, café, train, kitchen table. It sits in the session with you.
Days, not hours.
Two to three days of heavy use per charge. USB-C when it's time.
2-3 days
The app waits its turn.
During a session your screen shows the timer and what's locked. Nothing else. XP and streaks wait until you're done.
Colours
Which one's yours?
The original. Goes with everything.
Cream
Six colours. Tap one to see it on Lumi.
Concepts
What Lumi could look like.
Thirty-two ideas we're playing with. None of them are for sale yet. Heart the ones you'd carry and send us your picks.
Concept renders, not products. The six colours you can reserve today are above.
Inside
Build a Lumi in one scroll.
- 01The face. A 1.47" colour screen for Lumi's face and your countdown.
- 02The glow. An amber ring, one button and a gentle buzz, never an alarm.
- 03The brains. A main board, Bluetooth LE to talk to your phone, and the battery.
- 04The loop. USB-C for charging, the back shell and a loop for your keys.
The real board is still being built, so the final layout may change a little.
Specs
The numbers, in plain English.
Nine facts about Lumi, each with a line on what it means for your day.
- Size
- 75 × 65 × 40 mm
- About half a phone tall, so it fits a pocket.
- Weight
- 90 to 110 g
- About as heavy as a deck of cards.
- Display
- 1.47" colour LCD
- Big enough for Lumi's face and your countdown.
- Battery
- 2 to 3 days of heavy use
- Plug Lumi in every couple of days.
- Connectivity
- Bluetooth LE, USB-C
- Talks to your phone over Bluetooth. Charges over USB-C, like most new phones.
- Feedback
- Amber ring, haptic, one button
- A glow and a gentle buzz, never a beep.
- Body
- Matte ABS/PC blend
- Smooth, matte plastic, made to ride on your keys.
- App
- iPhone and Android
- Works with the phone you already have.
- In the box
- Lumi, USB-C cable
- Lumi and a charging cable. That's it.
October beta
100 Lumis.
100 testers.
In October the first 100 units go to people who use Lumi every day and tell us what to fix before the full run.
Pictured: concept finishes we're exploring. Beta units come in the six launch colours.
Roadmap
From a workbench in London to your keyring.
Where Lumi is now, and what happens next. The little one on the line is keeping track.
Summer 2026
Working prototype
Face, ring, timer and app talking to each other on a dev board.
Done
Now
Reservations open
£10 holds your place in the first production run.
You are here
October 2026
100 beta testers
The first 100 units go to testers who use them every day and tell us what to fix.
Next
9 to 12 November 2026
Web Summit, Lisbon
We're showing Lumi at Web Summit. Come and say hi.
Booked
Late 2026
Kickstarter launch
The campaign goes live. Reservation holders hear first.
Planned
Winter 2026
Production
Beta feedback goes into the final design, then the first full run is built.
Planned
February 2027
First deliveries
Reservations ship to the UK and EU, in the order they were placed.
Planned
2027
What's next
New faces, study groups, and more ways to focus together.
ExploringDrag or swipe to see more ›
Reserve
£10 holds your place.
Refundable any time before it ships. The other £59 is due when your Lumi is ready.
Not ready yet? Join 150+ people on the list.
Questions
Fair questions.
Short, honest answers. Tap one to open it.
Is the £10 refundable?
Yes, any time before your Lumi ships, from the link in your email. After it ships, you have 30 days from delivery for a full refund.
Will it judge me?
No. It notices. Different thing. Reach for your phone mid-session and Lumi's face changes for a moment. No alarm, no lecture.
When does it ship?
February 2027, in the order reservations were placed. If the date moves we say so here and by email first, and your £10 stays refundable.
What happens when I finish?
Lumi's glad you did. Big smile, and the XP lands in the app afterwards, never during.
Will it beep at me?
Never. A soft glow on Lumi's amber ring and a gentle buzz, and that's it.
How often do I charge it?
Every couple of days. The battery lasts 2 to 3 days of heavy use, and Lumi charges over USB-C, like most new phones.
iPhone or Android?
Both. The app ships for iPhone and Android at launch.
Who am I paying?
Nestra Brands OÜ, the company behind Lumi. £69 buys Lumi, a USB-C cable and the app. Nothing renews.