Clients verbally approve extra work but later dispute it on invoices, leaving service providers without formal documentation to prove authorization.

Text messages and verbal agreements are insufficient for formal approval documentation and can be disputed by clients, leading to unpaid work and financial losses.

Opp. Score

Severity

3Medium

Willingness to Pay

implied

Added

Apr 21, 2026

Workarounds Described

texts for approval
verbal agreements for extra work

Implied Software Gaps

Digital change order system with client e-signatures
Automated approval-to-invoice workflow integration

App Concept

WorkAuth Pro

A mobile-first approval platform that creates legally binding change orders and work authorizations in seconds. It replaces informal texts and verbal agreements with timestamped, client-signed digital approvals that automatically attach to invoices, eliminating disputes over extra work.

Key Features

Instant change order creation with pre-built templates
Client e-signature capture via mobile link or SMS
Automatic attachment of approvals to invoices in QuickBooks/Xero
Audit trail with timestamps, IP addresses, and client verification

Target Users: Small business owners and solo operators in professional services, home services, and field service industries

Revenue Model: $19/mo per user SaaS subscription with 30-day free trial

Part of App Idea

Clients verbally approve extra work but later dispute it on invoices, leaving service providers without formal documentation to prove authorization.

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