// sent · viewed · paid · confirmed
You sent the invoice. This is how you know what happened next.
Invoicing software for freelancers, built into the client workspace the job already lives in. Raise it, send it, watch it move from sent to paid. Your clients pay you directly. We take no cut of it.
You keep 100%we never touch your money
// the actual problem
Making the invoice was never the hard part.
Any tool can generate a PDF. The part that costs you evenings is everything after you press send: whether they opened it, whether it's overdue, whether you already chased, and which of the eleven documents on your desktop was the one you actually sent.
An invoice isn't a file. It's a state — and it belongs to a job.
// the four states
Sent → viewed → paid → confirmed.
Every invoice carries its own status, and both sides can see it. That's the whole feature, and it's the one that ends the awkward email.
Sent
Raise it from a template inside the client's own space, with the job's details already attached. It lands where the rest of your work with them lives — not in a separate app they'll have to go looking for.
Viewed
You can see they opened it. "I never got it" stops being a thing either of you has to believe or dispute.
Paid
They pay you the way they always have — bank transfer, your own payment link, whatever you already use — and mark it paid. The money goes straight to your account.
Confirmed
You confirm it landed. Now the job is genuinely closed on both sides, and the record of it stays with the project instead of in your memory.
// where it lives
The invoice sits with the job it came from.
Standalone invoicing apps make you keep the context somewhere else — the brief in one place, the agreement in another, the invoice in a third, and you in the middle reconciling all three. Here the invoice is one row in the same thread as the proposal it came from and the files you delivered. When a client queries a line, the answer is on the same page.
That's the difference between invoicing software and client management that happens to invoice. See the whole workspace
// the paperwork
Professional invoicing, and the documents around it.
Seventeen document types
Invoices, receipts, statements, proposals, contracts, briefs — one builder, one place, consistent every time.
Your brand, not ours
Documents carry your logo and your look. On the Izi Werk plan they're fully white-label — no iziwerk badge anywhere your client can see.
Reminders that send themselves
On Izi Werk, invoice reminders and proposal nudges go out on their own — so chasing stops being a job you have to remember to do.
Only the right eyes
Invoices and contracts are visible to you and that client, and nobody else. Enforced at the data layer. How that works
Every invoice in context
Filed against the client and the project, not in a flat list of PDFs named final_v3. Six months later you can still find it.
A two-sided close
You mark the job done, your client confirms it. A clean finish on the record, rather than a thread that just goes quiet.
// the honest boundary
We don't move your money.
Worth being blunt, because plenty of invoicing tools are payment companies wearing an invoicing coat: iziwerk does not process payments. We create the invoice and we track what happens to it. Your client pays you the way they already do, straight into your account.
That's a real limitation if you want a pay-now button today — and it's also the reason there's no percentage anywhere in this product. Nothing to skim, because nothing passes through us. Native card payments through your own Stripe account are on the way; even then, the money will land in your account, not ours.
Flat fee. No cut. No strings.
// who it suits
Built for one person invoicing their own clients.
Sole traders and one-person businesses
If you invoice a handful of clients a month and the admin is a second job, this is the size of business it was designed around.
It isn't accounting software
No bookkeeping, no VAT returns, no payroll, no expense capture, and no sync with an accounting package. You'll still want your accountant, and we'd rather say so now than after you've moved.
Whatever you bill, the fee is the same
€12 or €24 a month, flat. A month where you invoice €14,000 costs exactly what a month where you invoice €400 costs. See pricing
// questions
Invoicing questions
"Does iziwerk process the payment?"
No. iziwerk creates the invoice and tracks what happens to it; the money goes straight from your client to you, by whatever method you already use — bank transfer, your own payment link, however you're paid today. Card payments through your own Stripe account are coming, but they're not shipped yet, and even then the money would go to your account, not ours.
"Do you take a percentage of what I invoice?"
Never. We charge one flat monthly fee — €12 or €24 — and it's the same whether you invoice €400 this month or €14,000. There's no percentage anywhere in the product, because we're not in the payment path at all.
"What does invoice tracking actually mean?"
Every invoice carries a state: sent, viewed, paid, confirmed. You can see that your client opened it, they mark it paid when they pay you, and you confirm receipt when the money lands. Both sides agree on where it stands, so "did you get my invoice?" stops being a conversation.
"Can I put my own branding on an invoice?"
Yes. Every plan sends professional documents from the built-in engine, which covers seventeen document types including invoices, receipts and statements. On the Izi Werk plan the documents are white-label — your logo and your brand, with no iziwerk badge.
"Is it suitable for a sole trader or a one-person business?"
That's exactly who it's built for. It is not accounting software — there's no bookkeeping, no VAT return, no payroll — so if you need those you'll still want an accountant or an accounting package alongside it.