tobbli is a studio workspace I designed and built for freelancers and small studios. Clients, projects, time, expenses, and invoicing live in one signed-in app, so the invoice is the last step of the work rather than a separate tool.

Alongside the product I built the marketing site at tobbli.com. The app is shaped for European billing: VAT, Kleinunternehmer under § 19 UStG, reverse charge, ZUGFeRD / Factur-X, XRechnung, and a SEPA payment QR on euro invoices. The interface and each document can run in ten languages.

Freelancers usually split the same job across a timer, a spreadsheet, and an invoicing tool built for a different country. The hard part was keeping that whole path in one place — from unbilled hours to a sent invoice — without turning the product into a second accounting suite.

German and EU invoicing adds rules that generic tools treat as an afterthought: tax modes, documents that lock after send, credit notes, and machine-readable e-invoices that have to validate before they go out. The interface still had to feel calm enough for someone invoicing between client calls.

tobbli is live at tobbli.com, with the product at app.tobbli.com. Freelancers can run clients, time, and invoices in one workspace, including the e-invoice formats German and EU clients expect.

Building it end to end — product, billing rules, and the marketing site — was a chance to design a full application around a workflow I know from freelance work, from the first timer start to the PDF that goes out the door.