Company

About [SIIZ]

[SIIZ] turns the size your team agrees on into hours, a price, and an invoice — without anyone re-keying it.

Our software

Plans in, estimates out

[SIIZ] turns the size your team agrees on into hours, a price, and an invoice so you quote faster and win more work. Built for teams that bill for their work, from solo operators to growing companies that need more users and features.

Our team

Built for real operations

Our team is focused on delivering reliable software built for teams doing real client work. We built [SIIZ] to help them size honestly, quote faster, and grow with confidence.

[SIIZ] supports agencies, consultancies, product studios and internal engineering teams with one workflow from sizing to invoice.

From the [SIIZ] blog

Why estimates should breathe

By The [SIIZ] team ·

An estimate is a living agreement, not a frozen number. Here is how [SIIZ] lets one change in the open without losing the trail.

Every estimate starts as the best guess you can make with what you know today. The mistake is treating that guess as a promise carved in stone.

In [SIIZ] an estimate can breathe. Scope moves, so the number moves with it, and every change keeps its reason, its author and its approval. The client sees what changed and why, and nobody has to reconcile a spreadsheet after the fact.

  • Start from roles and hours, then refine as the work becomes clearer.
  • Turn the estimate into a proposal the client can accept in one click.
  • When scope shifts, raise a change order instead of quietly rewriting history.

The result is an estimate people trust, because it was never pretending to be certain.

Need a partner integration?

We work directly with partners on high-impact integrations to keep workflows aligned with current operations.