Sentra Become a Senturion

Today’s spot

Hello. One spot, everyone near you, today. Shall we walk it?

London · One walk a day

Sentra A streak you can’t keep on your own.

One shared destination a day for your building and the ones around it, reached on foot. Set out together and it counts for you both. The streaks become mates.

Members are called Senturions Freshers first, this autumn. Then London.
Become a Senturion See it on the phone

The walk is real — 1,024 m through Bloomsbury, drawn from real map data. You can follow the whole route further down the page. Map data © OpenStreetMap contributors.

01 Meet the Senturion

One Senturion, one evening route.

Out after dinner. Streets you haven’t walked yet. Today’s spot at the end. Scroll, and London appears only where a Senturion has walked.

Map of Bloomsbury, London: a 1,024 metre walking route from a hall of residence to Russell Square, with today's spot at the end.
A real 1,024 m walk from halls to Russell Square, on the map the app draws. The mint grid is ground counted as covered, cell by cell, the way the app counts it. The three alerts are real app categories wearing the app’s own icons; their wording is written for this page. The offer card is invented end to end — The Example Kitchen is not a real business, and no offer like it is live. With reduced motion on, the scene holds the finished frame instead of animating it.

Maps © Mapbox © OpenStreetMap

Become a Senturion One of these a day, from your own building.

02 On your phone

Open it, and London is already covered in things to walk to.

These are screenshots, not drawings. The map is the real one, the marker in the middle is you, and the pins landing on it are the kind of thing any Senturion can put there.

Eighteen things you can put on the mappin drops drawn for this page

  • Danger
  • Feels unsafe
  • Unlit street
  • Police presence
  • Street performance
  • Hidden gem

Six of the eighteen. Most are a heads-up, a few are a reason to go — and whichever you tap is on the map for whoever walks past next.

Screenshots from the Sentra build, taken on a test walk around Oxford Circus — every number on them is that walk’s own state, not other people. What is added by us: the pins landing on the map — the icons are the app’s own, where they land is ours — the ring round the microphone, and the two notifications above.

Maps © Mapbox © OpenStreetMap

Screenshot of the Sentra app: a street map around Oxford Circus with a marker on your position, pins on nearby restaurants, shops and galleries, the Oxford Circus Underground roundel, a chip reading 21 degrees and partly cloudy, and a card at the bottom offering to save the selected spot or get directions.
Screenshot of the Sentra app: a walking concierge panel that says “Hi! I’m your walking concierge. Ask me where to go or how to walk there”, above tappable prompts reading Somewhere to study, Coffee nearby, Next bus, Pub crawl and Cheap eats open now, and an input row with a microphone button and a send button.
Those five prompts are really in the app. Tap one, type your own, or just say it.

The concierge

A concierge, built in.

This is the AI in the app. Ask it in words or say it out loud. It helps you get around London — somewhere to go, and the way to get there. It remembers things if you ask it to, and forgets them the moment you ask. And when a place takes bookings, it hands you the booking page.

The microphone is real.ring drawn for this page

Screenshot of the Sentra app: a sheet headed “What do you see?” over a grid of illustrated sticker icons covering both hazards and finds.
You are what fills the map. Pick a sticker, drop the pin, confirm where it goes. Six of the eighteen are named beside the map above.

And if you’d rather take the quieter way, ask. The app can route you along calmer, better-lit streets — usually a couple of minutes longer, and it says so before you choose — and the whole walk stays inside Sentra.

We don’t call routes “safe”, and we never will. No app can honestly promise that about a city street.

Become a Senturion It is a quiet app until there are people in it.

03 One walk

One evening walk, from your door to today’s spot.

Ten minutes you were going to walk anyway. Scroll, and you walk it — the phone comes up three times, and that is the whole app.

Example walk · generated, not filmed

A quiet Bloomsbury terrace at dusk seen from a walker's eye height: railings and stucco on the left, plane trees and parked cars on the right, wet pavement ahead, the street opening out into darkness at the far end. Generated for this page.
A generated street, not London filmed — no readable shop sign or number plate appears in it, no face in it is identifiable, and it is not a photograph of any particular street. The phone and everything on it are drawn for this page; the app’s real screens are in the phones above. The distance, the streak and the other Senturion are made up. With reduced motion on, the walk holds one frame instead of playing.

  1. 1One pin, and everyone around you gets it.

    Today’s spot lands once a day for a bounded hall cluster. Same place, same day, no negotiation — and turning up is the only way to log it.

    Shared · Presence-verified · Resets daily

  2. 2The walk home counts.

    Points for the distance, on foot or on a bike. Feet, not thumbs.

    Walk or ride · Points · Streak

  3. 3You leave a mark where you stood.

    A sticker sits on the map at the place, not in a menu. Your cluster sees it where you left it.

    Dropped in place · Visible to your cluster

  4. 4Arrived. The walk was the proof.

    Presence is verified, not self-reported. The points go up on the scoreboard, and a streak that takes two people needs you both to have set out.

    Presence-verified · Co-walk · Scoreboard only

And then the walk back, which is the part nothing counts. No points, no quest, no spot — just company, and a city that is starting to feel like yours.

Tuesday is not a special day. That’s the point. Become a Senturion

04 The words

Six words. That’s the whole vocabulary.

  • Today’s spot — one pin a day, the same one for your whole hall cluster. Everyone aims at it.
  • Co-walk streak — it only counts when both of you walk.
  • Quest — the day’s nudges, small enough to actually happen. They reset every morning.
  • Points — the scoreboard. You earn them by turning up.
  • Leaderboard — where the points put you, next to everyone else’s.
  • Senturion — anyone with a streak to their name. Also the small creature hopping around this page.
There is no seventh word.
Become a Senturion

05 Points

Points keep score.

You earn them by walking — reaching today’s spot, covering ground on foot or by bike. They give the streak a number, and the leaderboard something to sort by.

Walking
Top-up
240 Points
illustration

You can’t buy them, and nothing in the app spends them. The number is the scoreboard, and walking is what moves it.

Walk more, score more. Become a Senturion

06 Why we built it

The bit nobody warns you about.

You can move to London and go a month talking to nobody but a self-checkout. It is more ordinary than it feels: in the government’s own survey, no age group in the country says it feels lonely more often than 16-to-24-year-olds.

It fades faster on foot. Walk the same streets with someone and the city starts answering back — a busker outside the station, a bakery you’d have gone straight past, a street you now know by name.

Loneliness felt often or always: 9% of 16-to-24s, against 7% of all adults. Community Life Survey 2024/25, Department for Culture, Media & Sport. Fieldwork October 2024 to March 2025.

Sentra is the excuse. The walk does the rest.

Become a Senturion

The Senturion mascot — a small pale-teal character with coral cheeks, mid-wave.

Become a Senturion.

Sentra arrives with freshers week this autumn, on iPhone and Android, opening hall cluster by hall cluster across London. Bring your building.

Put your halls on the map Read our privacy policy

One shared walk a day. That’s the whole trick.