Fleetlize

Overview

Fleetlize is a fleet GPS and vehicle-security platform: a hardwired 4G tracker installed in a vehicle, paired with a web dashboard and mobile apps that give owners live positioning, remote engine immobilization, and theft alerts. I built the full stack — the Next.js client dashboard, the React Native iOS/Android apps, and the Node.js REST API that both consume.

Challenge

A fleet owner needs the same account to work three different ways: a detailed web dashboard for managing dozens of trackers and generating reports, a mobile app for a quick check on the go, and a device-facing API reliable enough to accept a position update every 10 seconds without falling behind. All three had to share one data model, one auth system, and one real-time source of truth — without the mobile app feeling like a stripped-down copy of the web app.

Approach

1. 01

   Real-time data layer

   Built the Node.js API to ingest tracker positions on a 10-second cadence and fan them out to connected clients, so the map never feels stale.

2. 02

   Shared domain, separate UIs

   Modeled trackers, alerts, subscriptions, and roles once in the API, then built purpose-fit interfaces on top — a data-dense dashboard for web, a fast glanceable view for mobile.

3. 03

   Role-based multi-account

   Added sub-accounts and permission levels so a fleet owner can invite drivers or staff with scoped access to specific trackers.

4. 04

   Device lifecycle in both apps

   Made tracker activation, configuration, and billing work end-to-end on mobile, not just web, so a driver can pair a new device from their phone.

Development Highlights

• Live map & journey replayReal-time positions with ~5m accuracy, plus a full history mode to scrub back through any tracker's past routes.
• Remote immobilization & alertsEight alert categories and a remote engine cut-off relay, so theft response doesn't wait on a phone call.
• PDF reporting & public share linksOne-click trip/distance reports and shareable public tracking links for dispatch or insurance.
• Cross-platform from one APIWeb dashboard, iOS, Android, and third-party integrations all run on the same REST API.

A fleet platform that treats web and mobile as equally first-class — same real-time data, two purpose-built interfaces.

Outcome

Fleetlize now runs 2,000+ client accounts across 150+ countries on plans starting at €15/month, with trackers updating positions every 10 seconds. The remote-immobilization and alerting features are strong enough that insurers offer policyholders a 5–20% discount for having the system installed.