App Development
Field-service mobile app for an engineering contractor
An offline-first iOS and Android app that replaced paper job sheets and cut invoicing delays from weeks to days.
The challenge
Engineers completed paper job sheets that reached the office days later, often incomplete. Invoicing lagged the work by three to four weeks and disputes were common.
Our approach
- Two-week discovery with engineers on site, then a clickable prototype
- Offline-first React Native build with photo capture and customer signature
- Automatic sync to the back-office system as soon as signal returns
- Phased rollout by region with in-app guidance and a support line
Results
22 days
Faster average invoicing
94%
Engineer adoption in month one
4.7
Average internal app rating