onespec
About us

Built by window installers, for window installers

OneSpec comes from everyday work in the window and door trade: site surveys, measurements, price lists, quotes and job sites. We built it to give installers back the hours they now spend between spreadsheets and the phone.

The problem we saw up close

Anyone who installs windows knows this struggle: before earning anything, time is lost in steps nobody pays for.

Quotes that go nowhere

Hours of measuring, calculating and calling for a quote that often never becomes an order.

The price comes last

Customers only find out the price after the survey and the quote: those over budget realise it when the time is already spent.

Everything scattered across spreadsheets and chats

Price lists, customers, job sites and supplies live in different files and chats: the same data gets retyped again and again.

A website that doesn't work for you

The company site shows photos and a contact form, but doesn't help customers understand what they want and what it costs.

Our answer: OneSpec

Two tools that work together. Use one or both, depending on how your company is organised.

Modular widget

The configurator on your website

It goes on your website with one line of code, with your colours and your logo. Customers choose sizes, colours and glass, see the price and send you a complete request.

  • Price calculated on your price list
  • Requests with sizes, choices and contacts
  • Spam filter and sorting by value
Platform

Your whole company in one place

Quotes with technical drawings and digital signature, customers, job sites, surveys, supply, logistics and acceptance tests: all connected, from request to installation.

  • Quote with technical drawing and PDF
  • Customer signature from the phone
  • Customers, job sites and supplies linked

How we work

From the job site to the code

Every feature starts from a real problem in an installer's work, not from a wish list.

Continuous improvements

We ship updates all the time and publish them on the Changelog page, with date and details.

Talk to the people who build it

Support is built into the platform and the team that develops OneSpec answers you.

Designed for Europe

Six languages and pricing rules for Italy, France, Belgium, the Netherlands, Germany and Luxembourg.

Who is behind OneSpec

OneSpec is led by its founders. You can contact them directly.

Stefan Serban

Founder

Vasile Serban

Co-founder

The company

OneSpec is a digital product of CORE829 SRL, a Romanian company for software development, marketing and digital services.

Company name
CORE829 SRL
Registered office
Str. Mihai Eminescu 10, Roman, România
CUI / VAT ID
RO54616345
Trade register
J2026029428009
Customer support
hello@onespec.eu

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Try OneSpec on your own work

Watch the demo without an account or create your account: the Pro plan includes a 14-day free trial.