WindowSim
Opening
This page is opening. Nothing is sent. If the phone is offline, drafts already saved on this device open from here once this page is on the phone.
WindowSim
This page is opening. Nothing is sent. If the phone is offline, drafts already saved on this device open from here once this page is on the phone.
WindowSim
Effective 6 September 2026
WindowSim is a photo-to-quote app for UK window and door fitters. Photograph the openings, draft an indicative estimate on this device, and edit units and fitting in pounds sterling. A photo-only price is not a fixed quote and not a site visit.
You photograph window and door openings, then draft a supply-and-fit estimate on this device. Edit units, fitting, VAT, and your firm name. Nothing is sent to a customer until you share or print it yourself. The product domain is windowsim.com. It is not printed on customer quotes.
This app is for tradespeople quoting UK windows and doors. It is not for children.
Photo-only price is an indicative estimate, not a fixed quote and not a site visit. WindowSim does not replace a site visit, a competent person scheme (FENSA, CERTASS, and similar), or Building Control. Quotes stay drafts on this device. Nothing is sent to a customer.
Print, PDF, WhatsApp, share, and email show the company name you set in Settings. They do not show WindowSim, WindowQuote, Bond Labs, windowsim.com, or a WS- or WQ- prefix.
Set your trading name in Settings first. Ready and confirmed estimates freeze that name and logo. This About page never prints on that paper.
Open the company cardLegal identity for this app. It is not printed on Settings, home, a job, or a customer quote.
WindowSim is a trading name of Bond Labs Limited. windowsim.com
Hello
hello@windowsim.comSupport
support@windowsim.com