Supercharge your hardware programs

Give Reflow your notes, transcripts, and files. It drafts your product spec, builds your requirements, and writes the documents your program needs. The reasoning behind every decision stays with it, so nothing gets lost as the program changes.

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Free, invite-only early adopter program for hardware teams.

Requirement · rev C 17 Jul 2026
SYS-31 Example program

Frame mass, structural assembly

≤ 3.4kg ≤ 2.1kg

Why it changed

Site survey at the pilot customer, 17 Jul: the units mount above a mezzanine, so the tech is one-handed on a ladder. Wall-mount had been the assumption since kickoff. That caps the whole unit at 5kg, down from 8 — and the frame carries most of the budget.

N-23 one-handed at height SR-12 unit ≤ 5.0kg SYS-31 frame

Design Spec §4.2 updated automatically

Hardware programs rarely fail on engineering. They fail on lost context.

Changes get agreed in a call, by whoever happened to be on it. The decision is real; it just never leaves the room. The spec, the drawing and the BOM don't catch up, and everyone else keeps building from documents that are quietly wrong.

  • 14 Mar Wall raised to 2.4mm for moldability. The CAD model was never republished. Tool cut to the wrong wall height
  • 02 Apr Operating range extended to −20°C. The capacitor ratings were never rechecked. Units fail to start cold
  • 21 Apr Sealing raised to IP65. The gasket spec never changed. Failed ingress test at cert

Reflow catches the mismatch before it reaches the floor.

Reflow is built by founders who know the pain of bringing complex hardware products to production. With backing from Re:Build Manufacturing, we're creating the tool we wished we'd had.

One workspace, always current

The Reflow workspace: a project conversation in the centre, with generated files, requirements, and plan tabs alongside it.
Your workspace in Reflow: active projects and conversations on the left. Files, documents, and requirements accessible from the primary content panel on the right.

What Reflow does for your team

Faster time to first deliverables

Drop in transcripts, drawings, RFPs, and datasheets. Reflow turns them into a product brief, a spec, a statement of work, or a decision memo, so you can start from a working draft instead of a blank page.

Documents into structured requirements

Reflow builds requirements you can edit, status, and trace back to the need behind each one. Review and edit with our requirements agent by your side.

Your whole team works in it

Shared project conversations the team is in together. People and Reflow's agents edit the same document at the same time. Specs, requirements, and files live in the project, not in one person's account or inbox.

Every change and decision tracked

Each message, file, and edit is captured and connected, so you can always see what changed and why. A new engineer is up to speed in an hour, not a week.

“This would have taken my team weeks.”

A hardware founder uploaded his notes and drawings and invited his team in. In under 48 hours, they had a product spec and a statement of work.

“The system knows more than I can remember.”

An engineering lead, after reading a spec Reflow wrote in 5 minutes from his own notes and transcripts.

What's coming next

  1. Give your program structure

    Available now

    Specs, requirements, and documents drafted from your own material, with every decision and change connected to the work it touches — in shared project conversations your whole team works in, editing the same documents alongside Reflow's agents.

  2. Plan from what you already built

    Coming soon

    The requirements and documents your team already built become a living project plan, with tasks and milestones that track the real state of the program, not a separate plan that drifts the day after you make it.

  3. Keep the program aligned as it changes

    In development

    Your decisions, requirements, and documents are connected, so Reflow catches when a change breaks something downstream: a tightened tolerance that violates a requirement, a spec that no longer matches the latest BOM. It surfaces the conflict for review before it reaches production. No spreadsheet, no AI chat, no requirements tool does that.

N-23 NEW User need one-handed at height SR-12 Stakeholder req unit ≤ 5.0kg SYS-31 System req frame ≤ 2.1kg Design Spec §4.2 cited, auto-updated impacts impacts impacts

Scroll to follow the chain

One need, traced through both requirement levels to the spec section that cites it. Nobody has to remember why the frame is 2.1kg.

How Reflow compares to your alternatives

Reflow compared with the tools hardware teams use today
Your options today What you get
Spreadsheets, Word, and the team's memory Truth that decays and leaves when your people do.
Generalist AI chat (Claude, ChatGPT) Good for one person. You'll need to build everything else.
Heavy requirements tools (Jama, Polarion) Powerful but heavyweight and slow. Wrong fit for early work.
Reflow The why, the spec, and the requirements in one place your whole team owns.

Ready to try Reflow?

We're running an invite-only early adopter program for hardware teams. Bring your live program and real deadlines. We'll get you building in an afternoon, and you can help shape what we do next.

Request an invite

or write to hello@projectreflow.com