Books that live where the work happens. Invoices, bills, and a real double-entry ledger.

Real double-entry. Every ledger entry balances (enforced at the service layer); there's a seeded chart of accounts, manual journal entries, a trial balance, and P&L, balance sheet, and cash flow reports with prior-period comparisons. Invoice and bill lifecycles auto-post into the same ledger.

Genosyn Finance covers quote to close natively: estimates, invoices, recurring billing, bills and vendors, ledger, reports, Stripe and CSV reconciliation, multi-currency FX gain/loss, and period close. For accountant hand-off it ships plain-CSV exports of customers, invoices, the general journal, and the trial balance.

Numbers are gapless per-company sequences minted at issue, prefixed with the customer's slug — ACME-CORP-INV-0001 — so they stay unique, self-identify across accounts, and satisfy compliance. Drafts stay unnumbered until issued.

Yes. Recurring schedules can auto-issue: each tick mints the number, posts the ledger entry, and emails the customer a rendered PDF through your configured email provider — the same path a human-sent invoice takes.

As integer minor units (cents) plus a 3-letter ISO currency code on every row — no floating-point currency anywhere. Catalog products and tax rates are snapshotted onto line items, so editing a product never rewrites history.