Progressive Web App: Service Workers, Push API, Fetch API, Web Push
This web app lets individuals subscribe to receive notifications on their device via a web browser. Notifications are almost identical to a notification you would receive on your device, through your favourite apps.
For this app, I scrape a lottery website four times a day to check when numbers are drawn. When a new number is detected, it’s stored in a database and a notification is sent out to individuals who subscribed to receive notifications on lottery draws.
Most of the API’s previously mentioned are relatively new and still being actively worked on. I expect that they will become mainstream very soon.
Try this app using your smartphone.
Link: Play Whe Results