Built for Estonian small businesses who value simplicity, quality, and personal service. Every customer is welcomed individually.
Fast invoice creation, customer and service management in one place. Bank transfers automatically reconciled with invoices.
Monthly subscriptions invoice themselves. You stay in control while technology handles the repetitive work.
Not a table — relationships. Each customer carries their full history: invoices, payments, notes.
A clear picture of your business health. Cash flow, debtors, forecasts — always one click away.
Sassu is not a mass-market product. We accept every customer personally to make sure our service truly fits your needs.
If you're a small business owner whose time is worth more than the cheapest alternative — get in touch.
Tell us about yourself →We don't publish phone numbers or email addresses. All communication starts through the application form — that way we connect the right people at the right time.
Submit application →