Product
The operating system for money-in.
One immutable spine from the counter to the tax return. Every sale sealed at the source, reconciled to a certified payment, and turned into structured data, for any business that takes money, on any hardware or in the browser.
Core
Written once. Impossible to quietly change.
Every sale, void and refund is appended to a hash-chained journal, each entry linked to the one before it, sealed with a timestamp and staff ID. Nothing can be edited or deleted after the fact. It's the tamper-proof foundation Nordic cash-register rules require, and the reason an audit takes minutes instead of weeks.
- ▪Append-only, hash-chained journal
- ▪Cancel & refund logged with reason, time, staff
- ▪Daily Z-report & SAF-T export, tax-office ready
- ▪Line-level VAT, sector-aware rates

Hur mycket sålde vi i går?
8 110 EUR
124 sealed sales · VAT 25,5% · Kamppi · 4 Aug
Deterministic
Ask in your language. Get a sourced answer.
Ask on WhatsApp, Telegram or the web, in Finnish, Swedish, Danish, Turkish or English, and Fizzy answers from your live, sealed ledger. It runs on curated, versioned rules, not model-generated numbers, so every figure traces back to a rule and the exact sales behind it. Real intelligence, zero hallucination.
- ▪Natural language in, structured answer out
- ▪Deterministic & fully auditable
- ▪Anomaly Guard flags suspicious voids & refunds
Certified by Worldline
Card, contactless and MobilePay, reconciled to the sale.
Fizzy is integrated and certified with Worldline, the infrastructure behind a large share of European card transactions. The tender, the receipt and the sealed record are one flow, so the money that came in always matches the sale that was rung up. Card data never touches your device.
About the Worldline partnership →
Hospitality
The kitchen sees the order as it is rung.
A line rung at the till reaches the kitchen screen in the same moment it is written to the ledger. The board is pushed, not fetched every few seconds, because three seconds is three seconds of a cook not cooking. Cards are edged in the colour of how long they have waited, so the next thing to make is chosen from two metres away, before anyone reads a word.
- ▪Tickets grouped by table, with the minutes they have waited
- ▪Fresh, working, late: the colour does the reading
- ▪Bumping a line on one screen clears it on every screen
- ▪Any paired terminal runs as a kitchen screen, so it is a mode, not another box to buy
QR ordering
The table orders. Your staff still decide.
Every table carries its own code. A guest scans it, reads the live menu off your catalogue and sends an order, and that order lands in an approval inbox on the register rather than in your sales. Someone accepts or rejects it, and only then is it rung, on the till that accepted it. Nothing a guest types can write itself into your ledger.
- ▪One code per table, menu and prices straight from your catalogue
- ▪A table can have five orders waiting at once, so nobody floods the pass
- ▪Accepting is atomic, so two registers cannot ring the same order twice
- ▪Guests order, they do not pay: the tender stays on your certified terminal
Kitchen display, QR ordering and table service are the hospitality module, switched on for the outlets that need them.
From the table · waiting for a person
The platform
Every capability on one sealed spine.
Core
Sealed Ledger
Hash-chained, append-only: the foundation every module writes to.
Worldline-certified
store + online, one inventory
VAT · SAF-T · ViDA 2030
multilingual, deterministic
fraud & error flags
clean data out, no lock-in
pushed to the pass, bumped once
table to approval inbox
open orders, running totals
REST + webhooks
Your data, flowing wherever you keep your books.
Fizzy sits alongside the stack you already run. Every sealed sale exports as structured data over an open REST API and webhooks, straight to your accountant, your ERP, or Baslic for tax filing. No migration, no lock-in.