Spec sheets that work the way you do.
The specification tool for the built environment. Architects, engineers, interior designers, and builders use it to plan materials, products, and surfaces in a single file.
The whole project, one file.
I built Tinn because the tools available to architects, engineers, and designers for specifying a project were built for someone else: project managers, retailers, e-commerce teams. Not for the way we actually plan a space.Simon Flatin · founder
A specification tool that fits the way the built environment actually gets planned.
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Offline by default
Your projects are local .tinn files. No login required to open them, no spinner waiting for a server. Works on the train, on site, in basements.
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Print-ready, always
Specifications belong on paper as often as on screen. Tinn exports clean A4 PDFs that look like they came from a print shop, not a SaaS dashboard.
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Mood and concept on one canvas
Drop images, draw annotations, snap to rulers, and pin specs to materials. The board lives next to the spec sheet, same file, same place.
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Your work, your file
Every project is a single .tinn file you own. Drop it in Dropbox, email it to a colleague, archive it in 2040. No vendor lock-in, no migration scripts.
Request early access
Tinn is in early access. Drop your email and we'll send you an invite.
Plan it. Spec it. Print it.
Built by an architect. Materials, products, surfaces, dimensions, in one file you own.
Download for free ↓