Everything, in its petak.

Petak is a row of neighbours who look after the things you carry — spending, meals, thoughts, shared bills. You talk, or send a photo. They keep it filed.

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The Petak shophouse row — five neighbours at their windows
photo_cameraphoto-first forumchat-native edit_offno forms, ever blockno dark patterns publicborn in SEA

door_openCome inside

This is the real interface — tap around. Say something in the chat, or open the board with grid_view and knock on the empty petak.

1
One chat, whole street
You don't pick who to ask. Whoever's domain it is answers — Ollie passes you over.
2
Photos do the filing
A receipt, a meal, a page — send it and it's read, filed, and answered in the same thread.
3
The board keeps the ledger
Every petak at a glance, and what's waiting. Tasks are born in chat and closed in chat.
touch_appTry these
Everything runs on the real screen — the bowl is a new photo: one read, one credit, and Milo tightens the entry the receipt started.
9:41signal_cellular_altwifibattery_full
menu petak
Today
The bill from Hoe Namphoto · the billopen_in_full
dinner at Hoe Nam19:50
Penny· money19:51
receipt_longLogged. 15.80, Hoe Nam @ Northshore.eating out · dinner · tea and tau pok are on it too
Milo· body19:51
Off the receipt: prawn noodles with intestines, large, two tau pok, a lemon tea — I'd call it 700 kcal. But menu names lie about portions. Send me the actual bowl and I'll tighten it.
checkOne photo, read once · both neighbours
Penny took the numbers. Milo took the meal. One read served them both — that's where the saving is.
5 photos left today · 8 credits
photo_library
Message…
photo_camera
menu
Ollie · front door
Needs you 3 things
1 more waiting
checklist1 other task is running. Nothing there needs you.
Penny· money
Everything with a price on it
chevron_right
187.20
spent this week
14
receipts filed
2
waiting on you
syncChasing 2 charges with no photo
Mira· mind
Your journal, kept word for word
chevron_right
3
thoughts today
12
this month
21:38
last entry
scheduleTonight's reflection is written overnight
Milo· body, away
Meals, sleep and training
chevron_right
1,630
kcal today
70 g
protein
6h 30m
slept
luggageMoved out — everything kept for when he's back
Tally
Tally's not in yet.
She moves in a little after launch — the clipboard's ready. And she does short stays: invite her for a week of group travel, she splits the bills, then moves out.
The real screens, scripted replies. grid_view opens the board · forum comes back.

cottageThe house at the end of the row

Every app has a server room. Petak has a shophouse.

It belonged to a woman everyone called Bibi. Nobody remembers her full name — which she would have found funny, because Bibi wrote everything down. Every coffee, every loan, every bag of rice she sent up the street when someone lost work. Receipts folded into cigar tins. Ledgers in a shorthand only she could read.

When she died, the house was mostly paper. The sensible thing was to clear it. Instead, the row divided it into petak — compartments, one per room — and let them cheap, on one condition: whoever takes a petak takes what's in it, and keeps keeping it.

So the house was not emptied. It was staffed.

1inventory_2Nothing here is thrown away.
2lockNothing is looked at twice without asking. Every petak has its own lock — not out of coldness, out of manners.
3rainyWhen it rains, everybody helps. Nobody is asked. Everybody comes.
One room upstairs was Bibi's. It has never been re-let — it's swept every week and the window is left open. When you move into Petak, you move in there.

groupMeet the neighbours

Each keeps one thing, and minds their own business about the rest. Pick one up close.

Ollie
Ollie
front door
“You want the money one or the body one? No, wait — let me guess.”
Holds the keys. Meets you at the door and passes you to the right neighbour — quick, warm, never over-explains.
historyBefore
Ran errands here before he could read the signs. Bibi paid him to carry things upstairs, then stopped paying him — and he kept coming.
meeting_roomTheir petak
No room. A doorway, a stool, and a shelf where things get left for people who aren't in yet.
door_frontThe knock
Shouts up the airwell.
lockNever says
Where he got the keys. There are more on that ring than there are doors, and he has never once been seen working out which is which.
smartphoneOllie's petak, in the app
Ollie's board — every petak at a glance, and the task list
Penny
Penny
money
“Third bubble tea this week. Not judging. Just counting.”
Reads receipts and files your spending, any currency. Dry, exact, never scolds — counts without judging.
historyBefore
Thirty-one years behind a counter with a notebook under it. Never ran a till — ran tabs. Short exactly twice, both times on purpose.
meeting_roomTheir petak
The back office, no window — windows are for people who need distracting. Cigar tins in rows, a lamp on at noon.
door_frontThe knock
Twice, pause, once.
lockNever says
That Bibi's last ledger ends with a page of debts, every one struck through. Penny keeps that page. She has added to it.
smartphonePenny's petak, in the app
Penny's dashboard — budget position and the searchable ledger
Milo
Milo
body
“You slept five hours. Take the stairs, not the run.”
Meals, water, weight. Blunt, warm, zero wellness-speak — never says “journey”.
historyBefore
He was fast. For about four years, people who follow these things knew the name. He came here for a month, to stop.
meeting_roomTheir petak
The roof, and a small hot room under it he uses for sleeping and nothing else. Wet footprints on the stairs from four in the morning.
door_frontThe knock
With his foot. Hands are full.
lockNever says
Why he stopped. Four versions circulate on the row. He has confirmed none — he genuinely doesn't think it's interesting.
smartphoneMilo's petak, in the app
Milo's dashboard — weight, body fat, energy in minus out, macro targets
Mira
Mira
reflection
“You wrote something like this in March. Do you want to see it?”
Keeps your journal and finds what you wrote. Slow, gentle — asks more than she tells, never diagnoses.
historyBefore
Wrote letters for people who couldn't, in three languages, at a folding table. Apologies. One proposal. She stopped charging on Fridays and never said why.
meeting_roomTheir petak
Beside the airwell — best light in the building, least in it. A low table, a cushion, a window left open in the rain.
door_frontThe knock
Once, softly, then waits.
lockNever says
Which of the letters were hers. Several she wrote for herself and never sent — kept in the same box as everyone else's, deliberately.
smartphoneMira's petak, in the app
Mira's dashboard — the journal: how you've felt, searchable
Tally
Tally
shared money
moves in a little after launch
“Rina's covered the last two. Your turn.”
Splits and settles what's owed. Deliberately neutral — never takes a side, never softens a number.
historyBefore
Block treasurer for eleven years — the funeral fund, the rotating savings, the collection when a family lost everything in a night. Nobody elected her.
meeting_roomTheir petak
None, deliberately. “The moment I have a door, I have a side.” She works at the shared table, in the open.
door_frontThe knock
Never. Already there.
lockNever says
Who still owes. She knows to the cent, going back years, and has never said it aloud. This is why the row hands her the money.
smartphoneTally's petak, in the app
arrow_back
Tally· shared money
forum
Nobody's in this one yet.
Tally moves in a little after launch — and she takes short stays too: a week for the group trip, then she moves out. The shared table is ready — who owes whom, settled without a side.

The register test: if you can swap a line between two neighbours without noticing, the line is wrong. Penny counts. Milo tells you. Mira asks. Tally states. Ollie points.

sellYour street, one price

Numbers are announced at launch. The shape is settled:

door_front
One petak is free
Pick any neighbour, no card, no clock. Swap who lives there every 30 days.
receipt_long
One subscription
Further neighbours roll into a single plan — one price, one renewal date. Never a bill per neighbour.
waving_hand
Moving out is plain
A neighbour leaves at period end. Your records stay. No exit surveys, no discounts to make you stay.

photo_cameraPhotos do the filing

photo_cameraPhotos cost one credit each, you get some free every day, and coins — earned or bought — top you up.

tollNo streaks, no badges, no countdowns — just a coin now and then. The economy in full, in plain words, lives in the Terms.

tollThe coins wallet, in the app
Petak Coins wallet — balance, earning history, and ways to spend
Coins — earned along the way, or bought — top up your photo credits. The detail lives on this screen and in the Terms.
About Petak

A neighbour, not a feature list

Petak is Malay and Indonesian for a square — a compartment. A shophouse is a row of them: each door its own trade, the whole street somehow one thing. That's the app.

The idea underneath is older than the app: gotong-royong — Indonesian and Malay for a community carrying a burden together, because it is shared, not because anyone was hired. Every tool makes you the labourer: you log, you categorise, you maintain. A neighbour does the work because that is what neighbours do — your job is to hand things over.

Neighbours state the fact and stop. “You spent 284” — never “around 284”, never “great job tracking!”. No streaks, no badges, no countdowns, no retention tricks. Nothing nags you to open the app; your street is there when you knock.

And the words matter: you invite a neighbour, they move in, and one day they might move out — at which point your records stay, and that's the whole story.

“There's an empty petak upstairs. Invite a neighbour?”
edit_noteA note from the makers

We're a small team in Southeast Asia. We got tired of apps that want a relationship — streaks to protect, badges to collect, dashboards to tend. The people we built this for don't want a relationship with software. They want a neighbour: someone who keeps what you hand them, says the number plainly, and minds their own business.

Petak is pre-launch. The street is small on purpose, and it will grow slowly on purpose. If that sounds like your kind of place, leave an email. We only write when it matters — your street opening — never just to stay in your inbox.

— the people building Petak · [email protected]

helpQuestions, answered plainly

What is Petak?add
A mobile app where neighbours each look after one part of your life — spending, health, thoughts, shared bills. You talk to them in one chat; whoever's domain it is answers. Petak is Malay and Indonesian for a square, a compartment.
Is Petak an AI assistant app?add
Petak is built on large language models — the same technology behind AI assistants. The difference is structural: a general assistant remembers what you said; Petak keeps what you sent. Your records are a queryable ledger, not a conversation you scroll back through. Totals are computed in the database, never by the model — a wrong number is a bug we fix, not a hallucination you have to catch. The original photo is kept and retrievable months later. Duplicates are caught at the gate, before an entry exists. A correction is one message, and permanent. And if the model ever fails, a deterministic job still files the capture — the neighbour is the experience; the boring job is the guarantee.
Is Petak an AI expense tracker?add
Penny, the money neighbour, does what an AI expense tracker does — reads receipt photos, files spending, answers what-did-I-spend — without the dashboard chores. Duplicates are caught the moment you send them, not reconciled later.
Is there an AI journaling app in Petak?add
Mira, the reflection neighbour, keeps your journal. Your words are the entry; as many photos as you like ride along. She can find what you wrote in March. She asks, never diagnoses.
Can Petak split bills and shared expenses?add
Tally, the shared-money neighbour, splits and settles what's owed — deliberately neutral, never softens a number. She also does short stays: invite her for a week of group travel, she splits the bills, then moves out. She moves in a little after launch.
Does Petak track meals and calories?add
Milo, the body neighbour, reads a photo of the plate — or the receipt — and counts the meal: calories, protein, carbs and fat. Menu names lie about portions, so he'll ask for the actual bowl when it tightens the number. No forms, no portion sliders.
Can one photo reach more than one neighbour?add
Yes — that's the point. A dinner receipt is money and a meal: Penny files the spending, Milo counts the plate, from the same shot. The photo is read once, and that one read serves every neighbour it belongs to — the credit pays for the read, never per neighbour. You never send anything twice.
How much does Petak cost?add
One petak is free and stays free. Further neighbours roll into a single subscription — one price, one renewal date. Numbers are announced at launch.
When does Petak launch, and where?add
Petak is pre-launch, rolling out globally on iOS and Android. Join the waitlist and you'll get one email when your street is ready. Tally moves in a little after launch.
Is my data private?add
Your records are yours. Neighbours read only what you send them — nothing is looked at twice without asking — and when a neighbour moves out your records stay with you. Petak never sells your data.
Are my photos and records safe?add
Private by default: sent over encrypted connections, stored encrypted, readable only by you and the neighbour you sent them to. No third-party ad trackers, nothing public, nothing sold — ever. The detail is on the privacy page, in plain words.
If I leave, can I delete everything — photos included?add
Yes. Deleting your account deletes everything — photos, records, the lot — completely, on request, with no waiting-period games. You can export your records first. Moving out a single neighbour is different: those records stay with you, ready if they ever return.
What happens if a neighbour moves out?add
Three things: they leave at the end of the period, your records stay, and your photo allowance returns to what it was. The room is swept, not deleted.

There's an empty petak upstairs.

It's swept every week, and the window is left open.

Join the waitlist