For accountants & technical buyers

How it actually works

The homepage tells you what THYRN Village POS does for your shop. This page is for the person doing due diligence before they trust it — your accountant, your IT-minded nephew, or you, at 2am, wanting to know it's not just a nice-looking spreadsheet.

The accounting engine

THYRN Village POS is not a POS with a calculator bolted on. It's a genuine double-entry accounting system first — every sale, purchase, expense, and adjustment writes a balanced journal entry, the same way a trained accountant would record it by hand.

What that guarantees: your Profit & Loss and Balance Sheet are never two separate calculations that happen to agree — they're two different views of the same underlying ledger. If they ever disagreed, that would be a bug, not a rounding footnote.

The engine follows international financial reporting standards (IFRS) and international accounting standards (IAS) — the same framework used by accountants worldwide, including the Australian Accounting Standards (AASB), which are built on the same foundation. That means the reports it generates are ones a qualified accountant recognises immediately, not a homegrown format they have to translate.

Double-entry bookkeeping Accrual basis IFRS-aligned revenue recognition Weighted average cost inventory Reversal-based corrections

What we don't publish here — deliberately — is the exact journal-entry shape for every transaction type. That's not because it's a secret from your accountant; it's because a paragraph-by-paragraph implementation map is a build specification, and handing that to the internet handles it to competitors as much as to customers. If you're an accountant evaluating this for a client, we're glad to walk through specific transaction types directly.

Offline-first, not offline-sometimes

Every write goes to the device first

Sales, stock changes, and journal entries are saved to the device's own local database the instant they happen — before any attempt to reach the internet. The app never waits on a network to record something real.

Sync is additive, never a replacement

When a connection is available (Business plan and above), records sync to the cloud in the background. A device coming back online after days offline merges its data in — it never overwrites what other devices recorded in the meantime.

Nothing is ever silently deleted

A voided sale or a corrected entry is reversed with a new, linked entry — the original stays in the record permanently. If someone ever needs to reconstruct exactly what happened and when, they can.

Security & data ownership

Where your data lives

Primarily on your own device, in the browser's local database. Business plan and above also sync a copy to Firebase, access-controlled per shop.

Who can see your books

Only devices registered to your business. Server-side rules are enforced per shop — one customer's data is never reachable from another's account, even by us, without your device's own credentials.

Payments

Handled entirely by Lemon Squeezy. Your customer payment data never touches THYRN's servers — we only ever see that a licence was purchased, not any card or bank detail.

Role-based approval

Sensitive actions — voids, large discounts, closing the books — require Owner or Admin approval, enforced at the function level in the app itself, not just hidden behind a button in the interface.

A short glossary

For the business owner who's curious what these words actually mean.

Double-entry bookkeeping: Every transaction is recorded twice — once as money coming from somewhere, once as money going somewhere. If the two sides ever don't match, you know immediately something's wrong.
IFRS / IAS: International Financial Reporting Standards and International Accounting Standards — the common rulebook accountants around the world use, so a set of books means the same thing whether they're read in Colombo, Dubai, or Sydney.
Weighted average cost (WAC): When you buy the same product at different prices over time, WAC blends those prices into one fair "true cost" per unit — so your profit figure reflects reality, not whichever batch you happened to sell from first.
Trial Balance: A single report listing every account and its balance, used to prove the books actually balance before anything else is trusted.
Accounts Receivable / Payable: Who owes you money (Receivable), and who you owe money to (Payable) — tracked automatically instead of remembered.

Have a specific question this page doesn't answer? Reach out via WhatsApp — the fastest way to get a real answer from a real person.