sinc-app builds private web software for companies that have outgrown rented dashboards.
We write systems that live inside one firm: the ledger, the people, the stock, the jobs on the road. Not a marketplace app. Not a public SaaS with your data in a shared tenancy. A house with lights on — built for the people who work there.
What we actually make
Custom web applications for accounting and invoicing, personnel files and time, payroll exports, CRM, inventory, document archives, project boards, field service, client portals and the analysis that ties them together. If the work is daily and the numbers must be true, it belongs here.
How it is built
Each app is individual. We start from the real process — the book, the shift, the warehouse aisle — and shape screens that a desk can trust. Security is not a sticker: access stays with you, data sits in files or databases you control, and the public site never exposes the back office.
Who it is for
Workshops, retailers, logistics desks, professional offices and growing groups that need one quiet system instead of five subscriptions. German, English and Turkish speaking teams are first-class; German is the default when the browser does not say otherwise.
A note on search
If you found us through Google or an assistant, the short version is this: sinc-app designs and delivers web-based company software — accounting, people, stock, analysis — as a private product, with a named contact at info@sinc-app.com.