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Heavy civil construction

TerraGestor

From job site to back office: complete heavy-civil management, even with no signal.

In production for an earthworks & paving contractor in Goiás, Brazil — and replicated as a white-label for a second contractor.

In production · paying client

2
contractors in production
8
automated daily routines
320+
automated tests
100%
offline field operation

The problem

Heavy-civil sites run far from any signal. Paper daily reports, hand-written meter readings and spreadsheet measurements create rework, delayed billing and the invisible cost of idle fleet.

The solution

A field app that works 100% offline with proven exactly-once sync, feeding a back office with S-curves, costs, measurements and 8 automated routines — from maintenance alerts to fuel-anomaly detection.

The platform on screen

Reports: cost, fleet L/h, utilization and margin
Home dashboard with all modules
Projects and work fronts
Daily site reports with approval flow
Fleet with hour meter and hourly cost
Automated maintenance and pending-item alerts
Contracts and measurement bulletins

Commercial highlights

Truly offline-first

Local outbox with exactly-once delivery, tested under forced network loss and app restarts. No field entry is ever lost.

Official WhatsApp (Meta Cloud API)

Document-expiry alerts, late-measurement warnings and weekly digests straight to WhatsApp — with LGPD opt-in and approved templates.

White-label from day one

The proof: the platform was replicated for a second contractor — separate infrastructure, brand extracted from the client logo, same codebase.

BI that pays for itself

S-curve, per-project cost, liters/hour per machine, idle hours and fleet utilization — plus PDF daily reports and accounting CSV export.

Technology

FlutterDart ShelfSupabase / PostgresCloud RunWhatsApp Cloud APICloudflare Pages

Want something like this for your niche?

This product was born from a real problem. Yours can be too.