How-to guide
Two minutes, no card. One account runs your whole business — and your crew get their own simpler sign-in.
From seastackbook.com, tap Start free (or open seastackbook.com/app). You'll land on the sign-in page.
Continue with Google is the fastest — one tap creates your business account automatically.
Prefer email? Tap Create an account, enter your email and a password, and you're in. Same page, same button, every time after.
Once you're in, the app walks you through the basics: your business name, your trade (this picks your industry setup), and your province — that's what makes GST/PST come out right on every invoice.
Seastack works in any browser, but it's better on your home screen: open the app on your phone and use Add to Home Screen, or grab it from the download page. Everything the desktop does, in your pocket.
Free forever on Solo. Upgrade only when the crew grows.