Professional quotes. Instant invoices. Get paid faster.
Quantify is the invoicing workstation for freelancers, contractors and small businesses — quotes, invoices, expenses and tax compliance in one fast, local-first app on macOS, Windows, Linux, iPhone and Android.
The invoice desk: your document and the client’s PDF, side by side, rendering as you type. The same app everywhere you work.
Quote → invoice → paid, one record.
A quote converts to an invoice with one tap, line items intact. Numbering is automatic, validity is tracked, and the whole lifecycle — draft, sent, accepted, invoiced, paid — lives on one record instead of five apps.
Professional quotes with your branding and automatic numbering. Accepted? One tap converts it — nothing retyped, nothing lost.
Card payments powered by Stripe — including contactless taken right on your phone, no card machine. Bitcoin payment details on invoices if that’s how your clients pay.
Track expenses against the business with receipts attached, so the numbers your reports and tax figures build on are the real ones.
Revenue, outstanding, overdue, expenses — the financial picture derived live from your records, not from a spreadsheet you meant to update.
Your business data lives on your device, not on our servers. No account required to run your books, no tracking, no advertising.
An optional desktop add-on that puts a multi-agent AI crew to work on your admin — drafting, chasing, summarising — under your direction.
Tax compliance, built in — not bolted on.
Quantify ships with native tax integrations for two jurisdictions, derived from the same records you invoice from. Figures in the app aren’t tax advice — but they are your real numbers, ready to file.
Digital records and quarterly updates for Self Assessment, straight from your invoices and expenses. You sign in with your own Government Gateway credentials.
Spanish invoicing compliance as a dedicated edition — hash-chained records and digital signatures, built to the VeriFactu specification.
Buy it once. It’s yours.
No subscriptions. Licenses are perpetual and validate offline once activated.
Quotes, invoices, expenses, reports and HMRC Making Tax Digital — the whole core, on every platform.
The multi-agent AI orchestration add-on for desktop — your admin, delegated.
Spanish tax compliance: hash-chained invoice records and digital signatures, kept current with the regulation.
In development, heading for every platform you own.
Want an early look at Quantify — or want to tell us what your invoicing actually needs? Get in touch.
Prefer email? info@quantumencoding.io