OPSKAP OS
For freelancers

Your invoices deserve
better than Word.

OPSKAP OS gives solo founders and freelancers a clean, fast back-office. Issue invoices, track money, store documents. No accountant required.

Start free — no card needed

Sound familiar?

Every freelancer has these problems. Here's how OPSKAP fixes them.

😩You send invoices from Word templates
→
Professional PDFs in 2 clicks, auto-numbered, with your bank details
📊Finances live in 3 different spreadsheets
→
One dashboard. Income, expenses, net profit. Live, by month.
🔍Contracts are buried in Gmail
→
Upload once, tag it, find it in 10 seconds. PDF preview inline.
😬You forget to follow up on overdue invoices
→
Overdue flag, status tracking, dashboard warning tile.
🤯You quote from memory
→
Client records with billing details. One click to fill invoice.

From zero to first invoice in 10 minutes

1

Create your workspace

Sign up, set your workspace name. 60 seconds.

2

Add your company

Legal name, reg number, tax ID, bank account. This goes on every invoice.

3

Add your first client

Name, address, tax ID. Fill once, reuse forever.

4

Issue your first invoice

Pick the client, add line items, hit save. Download the PDF. Done.

Tips for freelancers

Always include your tax ID on invoices

Even if you're not VAT registered yet, your registration number adds legitimacy. Clients in the EU often require it for their own accounting.

Set net-30 terms by default

Net-30 (pay within 30 days) is the professional standard. Shorter is better, but net-30 gets you taken seriously. Mark due dates clearly on every invoice.

Duplicate recurring invoices

If you invoice the same client monthly, use the Duplicate feature. Change the date and number — done in 10 seconds.

Log your expenses the same day

Memory is unreliable. Log every business expense as an incoming invoice in OPSKAP on the day you pay it. Your P&L will thank you.

Ready to look professional?

Start free. No credit card. Your first invoice in 10 minutes.

Create free account →