Approve field expenses fast — mobile OCR + project workflows

Field-heavy organizations — construction contractors, utilities, home services and municipal fleets — routinely struggle with slow, error-prone expense reimbursements because receipts, mileage and project charges are captured offsite and later reconciled manually. The result is hours of administrative work per manager per week, delayed payments to crews, frequent lost receipts and compliance gaps for roughly 1.5 million potential customers. You could build a mobile-first expense platform that uses on-device OCR, GPS- and photo-backed evidence, project-level workflows and configurable approval rules to push captured expenses straight into accounting and payroll via APIs. Add real-time anomaly detection tuned to field patterns, offline-first mobile UX for low-connectivity sites, and an auditable project trail so approvals that used to take days can happen on the spot. This is an $8.4B addressable market (1.5M field-heavy organizations × $5.6K ACV), with a Market Score of 88/100 and Revenue Potential of 90/100; adoption is being enabled now by smartphone ubiquity, rapid improvements in OCR/AI and the rise of API-first accounting and ERP stacks. Those trends materially lower technical and go-to-market friction compared with five years ago. To stand out you’ll need accuracy and workflow depth more than basic receipt capture: focus on high-accuracy OCR for field formats, project-aware cost allocation, tight integrations with top ERP/payroll systems and policies that reduce approvals without increasing fraud. Key challenges are integration complexity, change management with field crews and incumbent competition — a disciplined pilot strategy in one vertical, clear ROI metrics and compliance-first design will be essential to winning early customers.