ScopeGuard — editable calc layer for vertical SaaS quotes

Let clients tweak just the few quote lines that matter, without exporting to Excel

Problem

Small project-based businesses quote with dozens or hundreds of line items, mixed units, and changing material prices. Clients often want to adjust quantities, apply a negotiated discount, or add a line just to see the effect. A plain quote form can't handle these exceptions, so quotes fall back to Excel and lose process and version control. Reworking the entire quoting system is too expensive.

Solution

Embed a controlled spreadsheet component inside the existing quote form: expose only the negotiable line items as editable cells, recalculate the total in real time, and lock formulas so clients can't break them. Every submission creates a comparable version so any client-edited line traces back to a project.

Users

Vertical SaaS teams serving custom project businesses (construction, events, installations) and SMBs still quoting in Excel

MVP

An editable line-item grid (qty, unit price, discount) next to the quote form; real-time total recalculation; locked formulas to prevent client breakage; version snapshots per negotiation with diff; export to PDF quote.

Revenue

Per-seat subscription (from $15/month per salesperson or estimator) or as a white-label add-on billed per API call inside a vertical SaaS.

Why now

Vertical SaaS is shifting from full replacement to embedding into existing workflows; a pluggable calc layer can cheaply capture the many quoting processes still living in Excel.