Create the invoice
Pick the customer, add line items, taxes, and discounts. Your logo, your numbering, your currency. It takes about a minute.
Invoice — live today
Send invoices
that get
themselves paid.
ZipOS Invoice is billing software for small businesses. Branded invoices, card and bank payments on the document, polite automatic reminders, and a portal your customers don't need an account for.
Free plan, genuinely free
Stripe payments built in
Set up in minutes
StripeCard & bank payments
AutomaticOverdue reminders
No accountCustomer portal
Any currencyPer-invoice currency
$0 to startFree plan included
From "we should bill them" to money in the bank.
Send it
Email it with a portal link. Your customer views it, downloads the PDF, and pays by card or bank — no login, no app to install.
Get paid — or we nudge
Payments reconcile automatically. If the due date slips, scheduled reminders chase it for you, politely and on time.
Live · invoice.zipos.app
Real product, real data.
Everything billing needs. Nothing it doesn't.
Built for businesses with one to twenty people — owners who bill, not billing departments.
Customers in one place
Contacts, billing addresses, tax IDs, currency defaults, and full invoice history per customer.
Invoices & estimates
Branded documents with line items, taxes, discounts, and PDF export. Convert an accepted estimate to an invoice in one click.
Stripe payments on the invoice
Card and bank payments straight from the document. Payouts land in your bank — ZipOS never holds your funds.
Reminders that run themselves
Set the schedule once. Overdue invoices get chased automatically, so you don't write awkward emails.
Customer portal
A public link your customers use to view, download, and pay invoices. No account, no friction.
Reports & documents
Receivables reports scoped to the company you're working in, plus document capture for the paperwork behind the numbers.
Simple plans. No contracts. Cancel whenever.
Start free and upgrade when billing outgrows the plan — not before.
$0/ month
- Up to 5 active customers
- Up to 10 invoices per month
- Customer portal links
- PDF export
- Email support
$19/ month
- Unlimited customers and invoices
- Stripe payments built in
- Automatic reminders
- Estimates and multi-currency
- Document capture
- Priority email support
$49/ month
- Everything in Pro
- Multiple companies, one account
- Team roles and permissions
- Advanced reporting
- Single sign-on
- Dedicated support contact
Invoice is the first of four.
ZipOS is built in order — one app at a time, sharing the same customers, companies, and sign-in. Start with Invoice today; add the rest as they ship, without re-keying anything.
№
App
What it does
Status
01
Invoice
Customers, invoices, estimates, payments, reminders, customer portal.
Available
02
Books
Accounting, reconciliation, ledgers, tax-ready records, finance reports.
In development
03
HR
Team records, roles, time off, approvals, operating tasks.
In development
04
POS
Registers, payment terminals, daily close, store operations.
In development
Before you ask.
Is the free plan actually free?
Yes. No credit card to sign up, no trial countdown. Five customers and ten invoices a month, for as long as you like.
How are payments processed?
Through Stripe. You connect your own Stripe account and payouts land directly in your bank. ZipOS doesn't hold funds.
Do I need the other apps to use Invoice?
No. Invoice works on its own. When Books, HR, and POS arrive, your customers and team carry over automatically.
Can I export my data?
Yes. Customers, invoices, and documents can be exported at any time. Your data is yours.
/ 06 — Get going
Your next invoice