IN Brief:
- Aperture Works has launched Window Tracer for window and door installers.
- The tool is built around on-site survey workflows, allowing sketches to be converted into working designs.
- Window Tracer forms part of a wider installer software suite covering quoting, CRM, configurators, and lead generation.
Aperture Works has launched Window Tracer, a design tool developed around how window and door installers capture, convert, and quote site information.
The Hertfordshire software company, which is behind CIS Invoice and TakeOffPDF, is positioning Window Tracer as a survey-led tool rather than a conventional design-office package. The software allows a surveyor to sketch an opening on paper, photograph it, and convert it into a working Window Tracer design.
Founder Paul Edwards has more than 20 years of fenestration experience and developed the product after observing how fitters and surveyors work on site. The tool is built around speed, practical sketching, and the transfer of site information into a design and quoting workflow.
Window Tracer forms part of a broader Aperture Works suite described as an operating system for window and door installers. The suite includes Spicy Designer, a white-label door configurator; Hub CRM; Leads, an automated postal outreach tool driven by planning application data; CIS Invoice; and TakeOffPDF.
The launch reflects a wider push to digitise trade workflows without forcing site teams into software designed for different users. Many construction technology products are built around project managers, design offices, main contractors, or manufacturers. Window and door installers often work in a more fragmented environment, moving between site visits, customer communications, supplier information, measurements, sketches, pricing, and installation planning.
That creates a technology gap. A small installer may need professional drawings, accurate pricing, branded customer documents, survey records, and production-ready information, but may not have the administrative capacity or software budget of a larger fabricator.
Tools that reduce duplication between survey, design, quote, and order can have a direct effect on productivity. They can also reduce the margin loss that comes from measurement errors, incomplete survey notes, unclear customer choices, and repeated data entry.
The construction sector has been through several waves of software adoption, from BIM and common data environments to site management apps, drone capture, materials platforms, and estimating tools. A growing share of new software is now focused on narrow trade workflows where time is lost between informal site records and formal project information.
Fenestration is a strong test case for that approach. Window and door projects involve repeatable components, varied site conditions, customer-facing decisions, compliance requirements, and high consequences for measurement error. A small mistake at survey stage can flow into manufacturing, delivery, fitting, remedial work, and margin loss.
Digital tools that match the rhythm of a site visit may therefore be more valuable than visually sophisticated platforms that slow the surveyor down. If Window Tracer can convert informal sketches into useful design outputs quickly, it could help installers shorten the path from survey to quote while improving communication between customers, suppliers, and fitting teams.
The broader trend is towards trade software that captures experience rather than trying to replace it. Surveyors and installers already know how to measure, sketch, identify constraints, and spot practical risks. The software opportunity is to turn that judgement into cleaner data, better quotes, and fewer handover mistakes.
Aperture Works is also linking design into the wider commercial process. By placing Window Tracer alongside CRM, quoting, configurator, invoicing, and lead-generation tools, the company is targeting the operational burden that sits around installation work as much as the design task itself.
Window Tracer’s waitlist is now open. Its adoption will depend on whether installers can use the tool quickly in real survey conditions, without adding administration to a process that already depends on speed, accuracy, and customer confidence.


