Inside
Six rooms, one house.
You’ve seen one ordinary Tuesday. These are the six rooms it moved through — plus the phone in your pocket, and the rules that keep it all honest. There is more in each than fits on this page.
The Wall
Screens around the house show the day from across the room, then leave you alone.
Always-on e-paper screens
An e-ink panel in the kitchen, a bigger one by the desk — no unlocking, no glow.
A board that knows what time it is
It reshapes itself morning to night, and greets a bank holiday like a day off.
Gentle nudges, never nags
Rain, a clash, time to leave — and when nothing needs you: “All handled — rest easy.”
Guest mode
When a visitor’s home, shared screens quietly fold money and health away — one tap covers surprises.
Train, bike or tube — decided
Live trains, the tube and the chance of rain weighed into one leave-by time.
Real station boards at home
Live departures in official line colours, filtered to the direction you’re going.
The Calendar
Everyone’s week in one place — and the routines that carry it.
One family calendar
Everyone’s Google calendars become a single week; new events write straight back.
A warning before you double-book
“Heads up — this overlaps…” before it saves, across both adults’ calendars.
The family docket
To-dos the way a week feels — Overdue, Today, This week — with who’s on it.
Never miss a match
Your clubs’ fixtures fold into the week, with a match-day nudge.
Mornings that run themselves
The routine is planned the night before and adapts — rain, jet lag, an “I’m not OK”.
Away days you can see
Trips and time off drawn as colour bands across every day they cover.
The Books
Money that waits for a yes, and numbers that admit their age.
One net worth, three countries
UK banks, US stock and the land in Brazil in one figure — fresh, or says so; the Brazilian banks wired and waiting.
Money keeps its own currency
Pounds, dollars and reais never silently converted; one tap flips the display.
The payslip files itself
Salary lands, your phone nudges, one approval books it — the PDF files itself away.
The subscription catcher
Recurring charges get spotted and asked about; a cancelled one that charges again gets named.
Envelopes that watch real money
Fun money per person, every transaction bucketed — planned, expected, or unplanned.
A retire-early simulator
Drag savings, returns and age; watch the date move — stress-tested against crashes.
UK tax, done properly
Capital gains with the s104 pool, ISA countdowns, a self-assessment pack that assembles itself.
Goals with honest ETAs
Each goal shows how funded it is and when it lands, from real contributions.
Trips
Forward a booking email; the rest sorts itself.
An email becomes a trip
Forward any confirmation; seconds later a parsed trip waits for one-tap approval.
Your airlines, already understood
Thirteen formats and counting — BA and easyJet to Eurostar and Booking.com; flights, hotels, trains, hire cars, insurance.
Times in the right timezone
Resolved against 5,600 airports — 14:30 in São Paulo means 14:30 in São Paulo.
What the trip really cost
Every booking in its own currency, plus points and card — never a fudged total.
Who’s away, six weeks out
One plain sentence — “Everyone’s home until Aug 12” — and clashes flagged early.
A booking it can’t read is never lost
An airline it’s never met doesn’t fail silently — the house sets its own agents on it, and next time that airline just parses.
Health
Quiet trends, never a feed — and only ever shown to you.
The scale talks to the app
Step on the smart scale; every reading flows in by itself, duplicates impossible.
A trend that never lies
Never a raw number as a headline — a smoothed trend, judged against your goal.
Your trainer’s WhatsApp, structured
Paste the free-form plan — Portuguese included — and review it as a real program.
A gym session that runs itself
Loads prefilled, warm-ups walked through, a “busy” tap re-queues the machine. PRs spotted.
The nutritionist’s PDF, living
Meals, portions, swaps and macros read straight from the PDF — “what do I eat now?” answered.
Tape-measure day, guided
A Bluetooth tape streams readings into a head-to-toe session, dotted on a little silhouette.
The Inbox
A small pile worth your evening, and the people worth your call.
Something to read tonight
A taste-trained curator drops hand-picked reads — no feed, no infinite scroll.
Everything waiting on a yes
One queue for all approvals, with a clear record of who said yes and when.
Stay close to your people
Everyone you love gets a cadence, and who’s due a call surfaces before it lapses.
“No answer” is honest
A missed call doesn’t reset the clock — it lights a short fuse to actually connect.
Reach out in one tap
Each person’s preferred channel is a single tap — WhatsApp, call, text or email.
Snooze a person, guilt-free
Heads-down or on holiday? Nudges pause without losing the thread.
It speaks to the world
Plugged into the services your life already runs on.
Calendars and banks, trains and the weather, the scale and the bakery — across the UK, US and Brazil, with more as families need them.
Money, three countries
YNAB · UK banks & budgetsPluggy · Brazilian banksCharles Schwab · US stockYahoo Finance · pricesECB · exchange ratesAdyen · card payments, ready to switch on
Around the house
TRMNL · e-paper screensWithings · smart scaleApple Health · both directionsTfL & National Rail · London transitOpen-Meteo · weathergov.uk · bank holidaysGail’s · bakery click & collect
The paperwork
Email in · trips@caju.casaClaude · reads the messy PDFsGoogle · calendar, both waysObsidian · your daily noteGitHub · the family’s projects
Keys & locks
Google · sign-in allowlistPasskeys · Face ID sign-inNightly off-site backups
Beyond the rooms
The house travels, and it keeps its word.
In your pocket
The house comes with you — on the lock screen, the home screen, even in the tunnel.
Approve money from the lock screen
Small yeses are one tap; anything that moves money asks Face ID first.
The Family Ledger widget
Today as ledger lines on warm paper, on the home screen. A free day says “A clear day.”
Life on the lock screen
A leave-by countdown that moves with the trains; the routine as a now-playing card.
Tick chores from the home screen
Real checkboxes on the widget — even offline, the tick queues and syncs itself.
Share anything into the house
Share a payslip PDF and it files itself; share an article and it joins the reading pile.
Siri, Spotlight, the Action button
Add a task or start the routine by voice; find any person or trip from the iPhone’s own search.
Croissants from the sofa
Order the usual from Gail’s, pick a slot, watch the countdown on the Dynamic Island — payment is built and one switch from live.
Works in the tunnel
Every screen paints instantly from its last sync and says so plainly when it’s stale.
The honesty system
Every room above obeys these rules. They are why you can believe the rest of this page.
Nothing moves without your yes
Consequential things arrive as cards you read and approve — the one standing order, the bakery, is hard-capped and pre-authorised by you.
It can’t lie about success
Done means the real service confirmed it — a failure shows red, never a fake green tick.
“Who approved this?” — answered forever
Every decision’s every step is written down as it happens, for good.
Every number wears its age
Figures carry a “data as of” stamp; stale turns amber, broken shows red.
A household staff with names
AI helpers tidy the routine — each signing its name in the audit trail. The big calls stay yours alone.
Backups that have been restored
Off-site every night, and a regular drill actually restores them from scratch.
The door
That’s the house — as much of it as fits on a page.
Six rooms, a pocket, and the rules that keep it honest. It’s our home first — when a home opens up for another family, we write to the next name on the list.
£19 a month, one price per home — the details are on the pricing page.
Come in
Welcome home.
The sign-in below is for families who already hold a key.
Caju is a private household app — a family’s calendar, tasks and trips, health, and money, gathered into one calm place. One home per family, invite-only; your data is never sold or shared.
Built by one family, for one household. · caju.casa