Parameter Labs

Products we build for ourselves — and ship to people who’d use them.

When we hit the same problem on enough client projects, we build a tool for it. The good ones become real products we maintain and sell. Two are live today; we link to them here so you can find them, and because we’re proud of them.

LetterheadLab
letterheadlab.com
Turn your firm’s letterhead into an editable Word template.

Most firms have a beautiful letterhead PDF a designer made years ago — and nobody can actually use it as a Word document. LetterheadLab converts that PDF into a real, editable .docx with the logo, address, fonts, and page numbers in the right places. No design tool required.

SignedShoot
signedshoot.com
Model release forms that get signed on the spot.

Photographers were emailing PDFs back and forth, losing releases between phone and laptop, and chasing signatures days after the shoot. SignedShoot is the on-device release flow we wished existed — built for weddings, portrait sessions, and commercial work, with bilingual templates and a backend that keeps every signed release organized.

PreArrive
prearrive.com
Signed before check-in. Evidence for AirCover.

Short-term-rental guests sign a timestamped acknowledgment of your house rules and itemized fees before they arrive — on a phone, in about 90 seconds, no app to install. The output is a PDF certificate with an audit trail and content hash that AirCover, insurers, and small-claims courts actually accept as evidence.

Why we ship products

Our agency makes us pragmatic. Our products keep us honest.

Running WordPress sites and Odoo systems for clients is operator work — you learn what actually breaks, what people will pay to avoid, and what a quiet weekend feels like. Building products is the other half of that loop. It forces us to live with our own choices, eat our own monitoring, and explain our own pricing.

Everything we put on the Labs page is something we use ourselves or built because a client kept asking. If you find one of them useful, that’s the best feedback we can get.

Want us to build something like this for your team?

If you have a repeated workflow that should be a small tool instead, that’s a Propel conversation.

Explore Propel