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Building a Real-Time GPS Proximity Radar & Mobile Chat PWA with $0/Month Map API Costs

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Building a Real-Time GPS Proximity Radar & Mobile Chat PWA with $0/Month Map API Costs

DEV Community: mobile·David Zara·about 12 hours ago

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#devtomobile #devto #dev #math #radar

How I built NovaRadar GPS using Haversine spherical math, OpenStreetMap + Esri HD Satellite layers, and serverless mesh sync for family safety, convoys, and fleets.

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#Novaradar

Building a Real-Time GPS Proximity Radar & Mobile Chat PWA with $0/Month Map API Costs