Joost Schreuders
Part no.
JS-26-05
Maker
Joost Schreuders
Document
Location Guide datasheet
Revision
2026-03

Location Guide

Walk around and it tells you about the places you reach, using your phone's GPS.

Open the appView the code
Location Guide showing a status card that reads Searching for GPS.
Figure 1. Location Guide showing a status card that reads Searching for GPS.

Features

  • Shows GPS status and accuracy while you walk
  • Waits for a fix within 25 metres before it triggers
  • Measures the distance to each saved place with the haversine formula
  • Opens an info card when you arrive at a place
Table 1. Specifications
TypeProgressive web app
Built withJavaScript, Geolocation API, and Service worker
Last updatedMarch 2026
Sourcegithub.com/JooostS/location-pwa

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