Abstract
MIT App Inventor contains a database function for storing data within an app. Google Maps is accessible with MIT App Inventor, provided the Android tablet or mobile phone hosting the app has Internet access. This chapter outlines storing route data in an app database, with the app displaying route information using Google Maps. Building the app database and incorporation of Google Maps are the basis for Chapter 12 (GPS tracking app with Google Maps) to develop a GPS tracking app for the GPS module connected to an ESP8266 or ESP32 microcontroller.
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