Proposals, contracts and invoices, written for you.
Business OS is for freelancers, creators and studios. A client agrees a job, and the proposal, contract and invoice write themselves, ready for you to check, send and get signed.
Free while we're in early access · what it costs after
None of this is the work you signed up to do.
It's costing you time.
The proposal
A blank page, a fee you already agreed, and the job of explaining it to yourself before you can explain it to them.
The contract
Last project's document. You search for the old client's name and hope you caught all of them.
The invoice
Raised nine days late, in a different tool, for a deposit that should already have cleared.
Nobody quotes for this part. Everybody does it anyway, usually after dinner.
Business OS is the solution.
Add the project. Everything else follows.
Set up once: your business, your contract, your style. After that, every project runs the same three beats.
Add the project
Paste the enquiry, the reply, the call notes. It reads out the client, the fee and the dates for you to check.
The paperwork drafts itself
Scope, contract and invoice, written from your notes. Read them, fix them, approve.
Scope, contract and invoice, together
One link holds all three. They read the scope, accept the contract, and the invoice is already attached.
Nothing sends without your say-so, and every document stays in one place.
This is what your client opens.
A private link, not an account. Questions land against the section they belong to. The contract sits underneath, already accepted. When they're happy, they type their name and it's done.
It's also the first thing you ever hand a client. Before the shoot, the build, the launch, someone reads a document and decides what kind of operation they've hired. That document is usually the weakest thing you produce all project, because it gets written last and late. This one doesn't.
Nothing reaches a client that you haven't read.
You send it. By hand, when you're ready. Editing an approved proposal withdraws that approval automatically, so a version you haven't seen can't slip out behind you.
When the notes were thin, it says so and flags the section. It doesn't invent a deadline you never gave it, and it doesn't touch your contract wording.
A tool that writes to clients has to be more careful than one that writes a to-do list. The cost of being confidently wrong lands on a relationship, not on you.
You're not moving anything.
Asking someone to move their whole business into a new system to save time on admin is a bad trade, and most people quietly refuse it.
So there is nothing to migrate and no way of working to adopt. A job starts from what you already wrote about it — the enquiry, your reply, the notes from the call — and you check the four things it read before anything is created. Keep your own spreadsheet, your own inbox, your own habits.
Built narrow on purpose.
If you quote a project, agree a price, and deliver against defined milestones. Freelancers, creators, studios, consultants and small agencies. Fixed fee, clear scope, a start and an end.
If you bill hourly, run retainers, or sell subscriptions. That's a different product and we'd rather build this one properly first.
Made alongside a working studio.
Business OS began as one studio's internal tool, built because the part after a client says yes kept eating the evenings.
It's made by Will Perez Ltd in London, and still built next to live client work, which is the only reason it knows which parts are actually annoying.
Free while we're in early access.
We're taking on a small number of businesses by hand, so this gets built around real client work rather than assumptions. No card, no trial countdown, no feature held back.
What we want back is the honest version of what breaks. Afterwards it is £10 a month for unlimited projects rather than £20 — half price, kept for as long as you stay, because you were here first.
See the plans →Questions.
What does it actually write?
A welcome, scope of work, deliverables, timeline, success criteria and a costed breakdown, using your section names and skipping the ones you don't use. It also tells you which parts it had to guess at, because your notes were thin there.
What about the contract?
You build one once from a vetted clause library, edit the wording freely, or write clauses of your own. You accept it explicitly, and every project uses it from then on. No project reaches a client without one.
Do I have to move how I work?
No. There is nothing to migrate and no database to keep tidy. You paste what you already wrote about the job — an email, a message, your own notes — and check the four things it reads out of them.
Is my client data going anywhere?
It is stored in our own database. Your project notes are sent to Anthropic to draft the documents and are not used to train anything. Client pages are unlisted and never indexed. The full privacy policy has the detail.
Can I use my own branding?
You upload your logo and pick one of six document styles, which applies to the proposal, the contract and the invoice so all three match. Full colour and typeface control is not there yet.
Does it handle VAT and multiple currencies?
Yes. Pick one of five currencies, and it is used on every quote and every invoice. If you are registered for a sales tax, set your rate and it is added on top of your agreed fee, which is what your contract says.
Now go and do the work.
Not ready to start a project yet? Leave your email and we will tell you when things change.