For Painting Contractors

Estimate faster. Quote sharper.

Rule of Thumb turns a walkthrough into a professional quote in minutes — room-by-room interior estimating, exterior pricing, and a straight line from quote to job to paid invoice.

iPhone, iPad, Android, Mac & Windows — works fully offline

Why Rule of Thumb

Built for how painting contractors actually work

From the first walkthrough to the final invoice — estimating, quoting, scheduling, and billing, all in one place.

Room-by-Room Estimating

Take off every room with real dimensions and per-surface pricing — walls, ceilings, baseboards, crown, and chair rail. Paint and primer priced separately, pulled from your paint catalog.

Quotes That Become Jobs

Send a professional quote with a signature and deposit, then convert it straight into a scheduled job — crew assigned, visits booked, sold work carried through to invoicing.

Know Where Every Job Stands

Track money owed and overdue across every job, bill time-and-materials work from what was actually worked, and export straight to QuickBooks Online.

Ready to quote smarter?

Get Rule of Thumb and turn every walkthrough into a professional quote.