ProBooks is a simple, powerful invoicing and estimating tool built for small business owners, freelancers, and contractors. Create professional invoices, send estimates, accept payments, and track basic expenses—all in one clean, easy-to-use app available on web and mobile. ProBooks is designed for owners who want to stay organized and get paid faster without dealing with complicated accounting software. With features like invoicing, estimates, client management, payments, and expense tracking, ProBooks keeps your business running smoothly whether you’re on the job site, in the office, or on the go. Simple tools. Professional results. Built to help small businesses save time, stay organized, and keep cash flowing.
| Website | https://www.probooks.com |
| Revenue | $3 million |
| Employees | 4 (0 on RocketReach) |
| Address | 102 Boston St, Guilford, Connecticut 06437, US |
| Phone | +1 203-458-3011 |
| Industry | Software Development, Accounting & Accounting Services, Business Services |
| Competitors | Intuit, NetSuite, Sage, Zoho, Xero, FreshBooks, Wave HQ, Kashoo - Simple Cloud Accounting, Billy Regnskabsprogram, AccountEdge +34 more (view full list) |
| SIC | SIC Code 87 Companies, SIC Code 872 Companies |
| NAICS | NAICS Code 5412 Companies, NAICS Code 541 Companies, NAICS Code 54121 Companies, NAICS Code 54 Companies |
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ProBooks Questions
The ProBooks annual revenue was $3 million in 2026.
ProBooks is based in Guilford, Connecticut.
The NAICS codes for ProBooks are [5412, 541, 54121, 54].
The SIC codes for ProBooks are [87, 872].
