Open beta · free to try with play money

Pay in a scan.
Done in a second.

Maat is the wallet that makes paying feel like nothing at all. Scan a shop's code, see exactly who and how much, tap once. Top up in seconds, send money to friends by username, and never wonder where a yen went.

Get the app, free Open in your browser

No app store. No card. Works on iPhone, Android and your computer.

1 tapto pay, after you have seen the shop's name and the amount
63 msis how long the system takes to process a payment, 99 times in 100
¥0lost or double-charged across 13 deliberate failure drills
Freeto install and use. No fees for paying or sending

Everything a wallet should do

Small app. Big on the things that matter.

No clutter, no menus to dig through. Open it, do the thing, close it.

Scan to pay

Point your camera at a shop's code. Maat opens on the shop's name and the exact amount, so you always know what you are agreeing to before you tap.

Send to @anyone

Split a bill or pay a friend back with just their username. You see their name before you send, and the money lands instantly.

Top up in seconds

Add money from your bank and it is there before you put your phone down.

On your home screen

Installs from this website in two taps. No app store, no updates to chase, and it opens even without signal.

One tap is one payment

Tap twice, lose signal, try again. You are charged exactly once, every time.

Know before you pay

You see the shop. You see the amount. Then you decide.

  • No surprises. The confirmation shows who is charging you and how much, straight from the shop's till.
  • A code works once. Nobody can reuse a code you have already paid.
  • A clear history. Everything that touched your wallet in one list, the moment it happens.
Try it now
The Maat wallet asking to confirm a payment of 1,200 yen to Ramen Ichiban

How it works

From "how much?" to "thank you" in three steps

The whole thing takes about as long as reading this sentence.

Scan

The shop shows a code for your total. Open your camera, or the Maat app, and point.

Confirm

Maat shows the shop's name and the amount. If it is right, tap Pay.

Done

Your wallet updates, the shop's screen turns green, and you both get on with your day.

For shops

A till that fits on any phone or tablet.

  • Nothing to buy. No card reader, no terminal. The till runs in a browser.
  • Paid in a second or two. Type the amount, show the code, watch it turn green.
  • Refunds in a tap. All of it or part of it, straight back to the customer.
  • Paid out every day. Yesterday's takings, less a simple percentage fee, settled daily.
Open your shop

Create an account in the wallet, name your shop, and its till is ready in under a minute.

Built to be trusted

Under the friendly face, a very serious ledger

Money software earns trust on its worst day. So we gave Maat a lot of worst days, on purpose.

Bank-style bookkeeping

Every movement is recorded twice, once leaving and once arriving, the way banks have kept books for centuries. Money cannot appear or vanish.

Charged once, guaranteed

We cut connections mid-payment, pressed buttons twice and crashed servers at the worst moment. Every payment still happened exactly once.

Locked down

Everything travels encrypted. Your password is never stored, only a slow, salted fingerprint of it, and repeated wrong guesses lock the door.

Checked every day

Each day the wallet's books, the shops' payouts and the bank's statement are compared to the yen. They have to agree.

Recovers by itself

If something fails halfway through a payment, the system notices and finishes the job, or undoes it cleanly, without anyone lifting a finger.

Nothing hidden

How it is built, what was tested and how it performed under failure are all published, with the numbers.

See how it's built See the reliability results

Questions

Good things to ask

Is this real money?

Not yet. Maat is in open beta and every balance is play money: top-ups come from a simulated bank and nothing can be withdrawn. Everything else is real: real accounts, real payments between real people and shops, on the real system. It is the full experience without the risk.

What does it cost?

Nothing. Installing the app, paying, topping up and sending are all free. Shops pay a small percentage of each payment they receive.

How do I get the app?

Maat installs straight from this website, with no app store in between. Open the install page on your phone and follow the two steps for iPhone or Android. It lands on your home screen like any other app and opens full screen.

Do I need to create an account?

No. Open the wallet and you have one. If you want to use it on another phone, or keep it if you lose this one, choose a username and a password, which takes ten seconds.

What if I lose signal while paying?

Tap Pay again when you are back. Maat recognises it as the same payment and charges you once, whether or not the first attempt got through.

What do you know about me?

Very little: a username and a display name if you choose them, and your wallet's activity. No e-mail, no phone number, no contacts, no location, no advertising and no trackers. The privacy page has the whole list.

Get the app

Your wallet is one scan away

Scan the code with your phone's camera, or open this site on your phone. It is on your home screen in under a minute, and it is free.

  • iPhone
  • Android
  • Windows
  • Mac
Get the app Open in your browser

Scan to install